International Energy Conservation Code 2nd Edition

2003 In ter na tional En ergy Con ser va tion Code®

First Print ing: Jan u ary 2003Sec ond Print ing: April 2003

ISBN # 1-892395-68-1 (soft)ISBN # 1-892395-67-3 (loose-leaf)

ISBN # 1-892395-85-1 (e-document)

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IN TER NA TIONAL CODE COUN CIL, INC.

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PREF ACE

IntroductionIn ter na tionally, code of fi cials rec og nize the need for a mod ern, up-to-date en ergy con ser va tion code ad dress ing the de sign of en -ergy-ef fi cient build ing en ve lopes and in stal la tion of en ergy ef fi cient me chan i cal, light ing and power sys tems through re quire mentsem pha siz ing per for mance. The In ter na tional En ergy Con ser va tion Code®, in this 2003 edi tion, is de signed to meet these needsthrough model code reg u la tions that will re sult in the op ti mal uti li za tion of fos sil fuel and nondepletable re sources in all com mu ni -ties, large and small.

This com pre hen sive en ergy con ser va tion code es tab lishes min i mum reg u la tions for en ergy ef fi cient build ings us ing pre scrip tiveand per for mance-re lated pro vi sions. It is founded on broad-based prin ci ples that make pos si ble the use of new ma te ri als and new en -ergy ef fi cient de signs. This 2003 edi tion is fully com pat i ble with all the In ter na tional Codes (“I-Codes”) pub lished by the In ter na -tional Code Coun cil (ICC), in clud ing the In ter na tional Build ing Code, ICC Elec tri cal Code, In ter na tional Ex isting Build ing Code,In ter na tional Fire Code, In ter na tional Fuel Gas Code, In ter na tional Me chan i cal Code, ICC Per for mance Code, In ter na tionalPlumbing Code, In ter na tional Pri vate Sew age Dis posal Code, In ter na tional Prop erty Main te nance Code, In ter na tional Res i den -tial Code, In ter na tional Ur ban-Wildland In ter face Code and In ter na tional Zoning Code.

The In ter na tional En ergy Con ser va tion Code pro vi sions pro vide many ben e fits, among which is the model code de vel op mentpro cess that of fers an in ter na tional fo rum for en ergy pro fes sion als to dis cuss per for mance and pre scrip tive code re quire ments. Thisfo rum pro vides an ex cel lent arena to de bate pro posed re vi sions. This model code also en cour ages in ter na tional con sis tency in theap pli ca tion of pro vi sions.

DevelopmentThe first edi tion of the In ter na tional En ergy Con ser va tion Code (1998) was based on the 1995 edi tion of the Model En ergy Codepro mul gated by the Coun cil of Amer i can Build ing Of fi cials (CABO) and in cluded changes ap proved through the CABO Code De -vel op ment Pro ce dures through 1997. CABO as signed all rights and re spon si bil i ties to the In ter na tional Code Coun cil and its threestat u tory mem bers: Build ing Of fi cials and Code Ad min is tra tors In ter na tional, Inc. (BOCA), In ter na tional Con fer ence of Build ingOf fi cials (ICBO) and South ern Build ing Code Con gress In ter na tional (SBCCI). This 2003 edi tion pres ents the code as orig i nally is -sued, with changes ap proved through the ICC Code De vel op ment Pro cess through 2002. A new edi tion such as this is pro mul gatedev ery three years.

With the de vel op ment and pub li ca tion of the fam ily of In ter na tional Codes in 2000, the con tin ued de vel op ment and main te nance of the model codes in di vid u ally pro mul gated by BOCA (“BOCA Na tional Codes”), ICBO (“Uni form Codes”) and SBCCI (“Stan -dard Codes”) was dis con tin ued. This 2003 In ter na tional En ergy Con ser va tion Code, as well as its pre de ces sor — the 2000 edi -tion— is in tended to be the suc ces sor en ergy con ser va tion code to those codes pre vi ously de vel oped by BOCA, ICBO and SBCCI.

The de vel op ment of a sin gle set of com pre hen sive and co or di nated In ter na tional Codes was a sig nif i cant mile stone in the de vel -op ment of reg u la tions for the built en vi ron ment. The tim ing of this pub li ca tion mir rors a mile stone in the change in struc ture of themodel codes, namely, the pend ing Con sol i da tion of BOCA, ICBO and SBCCI into the ICC. The ac tiv i ties and ser vices pre vi ouslypro vided by the in di vid ual model code or ga ni za tions will be the re spon si bil ity of the Con sol i dated ICC.

This code is founded on prin ci ples in tended to es tab lish pro vi sions con sis tent with the scope of an en ergy con ser va tion code thatad e quately con serves en ergy; pro vi sions that do not un nec es sar ily in crease con struc tion costs; pro vi sions that do not re strict the useof new ma te ri als, prod ucts or meth ods of con struc tion; and pro vi sions that do not give pref er en tial treat ment to par tic u lar types orclasses of ma te ri als, prod ucts or meth ods of con struc tion.

AdoptionThe In ter na tional En ergy Con ser va tion Code is avail able for adop tion and use by ju ris dic tions in ter na tion ally. Its use within a gov -ern men tal ju ris dic tion is in tended to be ac com plished through adop tion by ref er ence in ac cor dance with pro ceed ings es tab lish ingthe ju ris dic tion’s laws. At the time of adop tion, ju ris dic tions should in sert the ap pro pri ate in for ma tion in pro vi sions re quir ing spe -cific lo cal in for ma tion, such as the name of the adopt ing ju ris dic tion. These lo ca tions are shown in brack eted words in small cap i tallet ters in the code and in the sam ple or di nance. The sam ple adop tion or di nance on page v ad dresses sev eral key el e ments of a codeadop tion or di nance, in clud ing the in for ma tion re quired for in ser tion into the code text.

MaintenanceThe In ter na tional En ergy Con ser va tion Code is kept up to date through the re view of pro posed changes sub mit ted by code en forc -ing of fi cials, in dus try rep re sen ta tives, de sign pro fes sion als and other in ter ested par ties. Pro posed changes are care fully con sid eredthrough an open code de vel op ment pro cess in which all in ter ested and af fected par ties may par tic i pate.

2003 IN TER NA TIONAL EN ERGY CON SER VA TION CODE® iii

The con tents of this work are sub ject to change both through the Code De vel op ment Cycles and the gov ern men tal body that en -acts the code into law. For more in for ma tion re gard ing the code de vel op ment pro cess, con tact the Code and Stan dard De vel op mentDe part ment of the In ter na tional Code Coun cil.

While the de vel op ment pro ce dure of the In ter na tional En ergy Con ser va tion Code as sures the high est de gree of care, ICC and the found ing mem bers of ICC—BOCA, ICBO, SBCCI—their mem bers, and those par tic i pat ing in the de vel op ment of this code do notac cept any li a bil ity re sult ing from com pli ance or non com pli ance with the pro vi sions be cause ICC and its found ing mem bers do nothave the power or au thor ity to po lice or en force com pli ance with the con tents of this code. Only the gov ern men tal body that en actsthe code into law has such au thor ity.

Letter Designations in Front of Section NumbersIn each code de vel op ment cy cle, pro posed changes to this code are con sid ered at the Code De vel op ment Hear ing by the In ter na -tional En ergy Con ser va tion Code De vel op ment Com mit tee, whose ac tion con sti tutes a rec om men da tion to the vot ing mem ber shipfor fi nal ac tion on the pro posed change. Pro posed changes to a code sec tion whose num ber be gins with a let ter in brack ets are con -sid ered by a dif fer ent code de vel op ment com mit tee. For in stance, pro posed changes to code sec tions which have the let ter [EB] infront (e.g., [EB] 101.2.2.1), are con sid ered by the In ter na tional Ex isting Build ing Code De vel op ment Com mit tee at the Code De vel -op ment Hear ing. Where this des ig na tion is ap pli ca ble to the en tire con tent of a main sec tion of the code, the des ig na tion ap pears atthe main sec tion num ber and ti tle and is not re peated at ev ery sub sec tion in that sec tion.

The con tent of sec tions in this code which be gin with a let ter des ig na tion is main tained by an other code de vel op ment com mit teein ac cor dance with the fol low ing: [B] = In ter na tional Build ing Code De vel op ment Com mit tee; [EB] = In ter na tional Ex isting Build -ing Code De vel op ment Com mit tee and [M] = In ter na tional Me chan i cal Code De vel op ment Com mit tee.

Marginal MarkingsSolid ver ti cal lines in the mar gins within the body of the code in di cate a tech ni cal change from the re quire ments of the 2000 edi tion.De le tion in di ca tors ( á ) are pro vided in the mar gin where a para graph or item has been de leted.

iv 2003 IN TER NA TIONAL EN ERGY CON SER VA TION CODE®

OR DI NANCEThe In ter na tional Codes are de signed and pro mul gated to be adopted by ref er ence by or di nance. Ju ris dic tions wish ing to adopt the2003 In ter na tional En ergy Con ser va tion Code as an en force able reg u la tion gov ern ing en ergy ef fi cient build ing en ve lopes and in -stal la tion of en ergy ef fi cient me chan i cal, light ing and power sys tems should en sure that cer tain fac tual in for ma tion is in cluded inthe adopt ing or di nance at the time adop tion is be ing con sid ered by the ap pro pri ate gov ern men tal body. The fol low ing sam pleadop tion or di nance ad dresses sev eral key el e ments of a code adop tion or di nance, in clud ing the in for ma tion re quired for in ser tioninto the code text.

SAM PLE OR DI NANCE FOR ADOP TION OFTHE IN TER NA TIONAL EN ERGY CON SER VA TION CODE

OR DI NANCE NO.________An or di nance of the [JURISDICTION] adopt ing the 2003 edi tion of the In ter na tional En ergy Con ser va tion Code, reg u lat ing andgov ern ing en ergy ef fi cient build ing en ve lopes and in stal la tion of en ergy ef fi cient me chan i cal, light ing and power sys tems in the[JURISDICTION]; pro vid ing for the is su ance of per mits and col lec tion of fees there for; re peal ing Or di nance No. ______ of the[JURISDICTION] and all other or di nances and parts of the or di nances in con flict there with.

The [GOVERNING BODY] of the [JURISDICTION] does or dain as fol lows:

Sec tion 1.That a cer tain doc u ment, three (3) cop ies of which are on file in the of fice of the [TITLE OF JURISDICTION’S KEEPER OFRECORDS] of [NAME OF JURISDICTION] , be ing marked and des ig nated as the In ter na tional En ergy Con ser va tion Code, 2003 edi -tion, in clud ing the Ap pen dix [FILL IN THE APPENDIX DETAILS BEING ADOPTED], as pub lished by the In ter na tional Code Coun cil,be and is hereby adopted as the En ergy Con ser va tion Code of the [JURISDICTION], in the State of [STATE NAME] for reg u lat ing andgov ern ing en ergy ef fi cient build ing en ve lopes and in stal la tion of en ergy ef fi cient me chan i cal, light ing and power sys tems asherein pro vided; pro vid ing for the is su ance of per mits and col lec tion of fees there for; and each and all of the reg u la tions, pro vi -sions, pen al ties, con di tions and terms of said En ergy Con ser va tion Code on file in the of fice of the [JURISDICTION] are hereby re -ferred to, adopted, and made a part hereof, as if fully set out in this or di nance, with the ad di tions, in ser tions, de le tions and changes,if any, pre scribed in Sec tion 2 of this or di nance.

Sec tion 2.The fol low ing sec tions are hereby re vised:

Sec tion 101.1. In sert: [NAME OF JURISDICTION].

Sec tion 3.That Or di nance No. ______ of [JURISDICTION] en ti tled [FILL IN HERE THE COMPLETE TITLE OF THE ORDINANCE ORORDINANCES IN EFFECT AT THE PRESENT TIME SO THAT THEY WILL BE REPEALED BY DEFINITE MENTION] and all other or di -nances or parts of or di nances in con flict here with are hereby re pealed.

Sec tion 4.That if any sec tion, sub sec tion, sen tence, clause or phrase of this or di nance is, for any rea son, held to be un con sti tu tional, such de ci sion shall not af fect the va lid ity of the re main ing por tions of this or di nance. The [GOVERNING BODY] hereby de clares that it would have passed this or di nance, and each sec tion, sub sec tion, clause or phrase thereof, ir re spec tive of the fact that any one ormore sec tions, sub sec tions, sen tences, clauses and phrases be de clared un con sti tu tional.

Sec tion 5.That noth ing in this or di nance or in the En ergy Con ser va tion Code hereby adopted shall be con strued to af fect any suit or pro ceed ing im pend ing in any court, or any rights ac quired, or li a bil ity in curred, or any cause or causes of ac tion ac quired or ex ist -ing, un der any act or or di nance hereby re pealed as cited in Sec tion 2 of this or di nance; nor shall any just or le gal right or rem edy ofany char ac ter be lost, im paired or af fected by this or di nance.

Sec tion 6.That the [JURISDICTION’S KEEPER OF RECORDS] is hereby or dered and di rected to cause this or di nance to be pub -lished. (An ad di tional pro vi sion may be re quired to di rect the num ber of times the or di nance is to be pub lished and to spec ify that itis to be in a news pa per in gen eral cir cu la tion. Posting may also be re quired.)

Sec tion 7.That this or di nance and the rules, reg u la tions, pro vi sions, re quire ments, or ders and mat ters es tab lished and adoptedhereby shall take ef fect and be in full force and ef fect [TIME PERIOD] from and af ter the date of its fi nal pas sage and adop tion.

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vi 2003 IN TER NA TIONAL EN ERGY CON SER VA TION CODE®

TA BLE OF CON TENTS

CHAP TER 1 AD MIN IS TRA TION . . . . . . . . . . . . . . . 1Section 101 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1102 Materials, Systems and Equipment . . . . . . . . . . . . . . 2103 Alternate Materials—Method of

Construction, Design or InsulatingSystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

104 Construction Documents . . . . . . . . . . . . . . . . . . . . . . 4105 Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4106 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4107 Referenced Standards. . . . . . . . . . . . . . . . . . . . . . . . . 4

CHAP TER 2 DEF I NI TIONS. . . . . . . . . . . . . . . . . . . . 5Section 201 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5202 General Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CHAP TER 3 DESIGN CON DI TIONS. . . . . . . . . . . 11Section 301 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11302 Thermal Design Parameters. . . . . . . . . . . . . . . . . . . 11

CHAP TER 4 RES I DEN TIAL BUILDING DESIGNBY SYS TEMS ANAL Y SIS ANDDESIGN OF BUILD INGSUTI LIZING RE NEW ABLEEN ERGY SOURCES . . . . . . . . . . . . . 13

Section 401 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13402 Systems Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CHAP TER 5 RES I DEN TIAL BUILDING DESIGNBY COM PO NENT PER FOR MANCEAP PROACH . . . . . . . . . . . . . . . . . . . . . 17

Section 501 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17502 Building Envelope Requirements . . . . . . . . . . . . . . 17503 Building Mechanical Systems and

Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37504 Service Water Heating . . . . . . . . . . . . . . . . . . . . . . . 42505 Electrical Power and Lighting . . . . . . . . . . . . . . . . . 43

CHAP TER 6 SIM PLIFIED PRE SCRIP TIVERE QUIRE MENTS FOR DE TACHED

ONE- AND TWO-FAM ILYDWELL INGS AND GROUP R-2, R-4OR TOWN HOUSE RES I DEN TIAL

BUILD INGS. . . . . . . . . . . . . . . . . . . . . 45Section601 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45602 Building Envelope . . . . . . . . . . . . . . . . . . . . . . . . . . 45603 Mechanical Systems. . . . . . . . . . . . . . . . . . . . . . . . . 50604 Service Water Heating . . . . . . . . . . . . . . . . . . . . . . . 50605 Electrical Power and Lighting . . . . . . . . . . . . . . . . . 50

CHAP TER 7 BUILDING DESIGN FOR ALLCOM MER CIAL BUILD INGS . . . . . 51

Section 701 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

CHAP TER 8 DESIGN BY AC CEPT ABLEPRAC TICE FOR COM MER CIALBUILD INGS. . . . . . . . . . . . . . . . . . . . . 53

Section 801 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53802 Building Envelope Requirements . . . . . . . . . . . . . . 53803 Building Mechanical Systems . . . . . . . . . . . . . . . . . 59804 Service Water Heating . . . . . . . . . . . . . . . . . . . . . . . 72805 Electrical Power and Lighting Systems . . . . . . . . . 74806 Total Building Performance. . . . . . . . . . . . . . . . . . . 75

CHAP TER 9 CLI MATE MAPS . . . . . . . . . . . . . . . 145Section901 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145902 Climate Zones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

CHAP TER 10 REF ER ENCED STAN DARDS . . . . 197

AP PEN DIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

IN DEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

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viii 2003 IN TER NA TIONAL EN ERGY CON SER VA TION CODE®

CHAPTER 1

ADMINISTRATION

SECTION 101GENERAL

101.1 Ti tle. These reg u la tions shall be known as the En ergyCon ser va tion Code of [NAME OF JU RIS DIC TION], and shall becited as such. It is re ferred to herein as “this code.”

101.2 Scope. This code es tab lishes min i mum pre scrip tive andper for mance-re lated reg u la tions for the de sign of en ergy-ef fi -cient build ings and struc tures or por tions thereof that pro videfa cil i ties or shel ter for pub lic as sem bly, ed u ca tional, busi ness,mer can tile, in sti tu tional, stor age and res i den tial oc cu pan cies,as well as those por tions of fac tory and in dus trial oc cu pan ciesde signed pri mar ily for hu man oc cu pancy. This code therebyad dresses the de sign of en ergy-ef fi cient build ing en ve lopes and the se lec tion and in stal la tion of en ergy-ef fi cient me chan i cal,ser vice wa ter-heat ing, elec tri cal dis tri bu tion and il lu mi na tionsys tems and equip ment for the ef fec tive use of en ergy in thesebuild ings and struc tures.

Ex cep tion: En ergy con ser va tion sys tems and com po nentsin ex ist ing build ings un der go ing re pair, al ter ation or ad di -tions, and change of oc cu pancy, shall be per mit ted to com -ply with the In ter na tional Ex isting Build ing Code.

101.2.1 Ex empt build ings. Build ings and struc tures in di -cated in Sec tions 101.2.1.1 and 101.2.1.2 shall be ex emptfrom the build ing en ve lope pro vi sions of this code, but shallcom ply with the pro vi sions for build ing, me chan i cal, ser -vice wa ter heat ing and light ing sys tems.

101.2.1.1 Sep a rated build ings. Build ings and struc -tures, or por tions thereof sep a rated by build ing en ve lopeas sem blies from the re main der of the build ing, that havea peak de sign rate of en ergy us age less than 3.4 Btu/h persquare foot (10.7 W/m2) or 1.0 watt per square foot (10.7W/m2) of floor area for space con di tion ing pur poses.

101.2.1.2 Un con di tioned build ings. Build ings andstruc tures or por tions thereof which are nei ther heatednor cooled.

101.2.2 Ap pli ca bil ity. The pro vi sions of this code shall ap -ply to all mat ters af fect ing or re lat ing to struc tures and pre -mises, as set forth in Sec tion 101. Where, in a spe cific case,dif fer ent sec tions of this code spec ify dif fer ent ma te ri als,meth ods of con struc tion or other re quire ments, the most re -stric tive shall gov ern.

[EB] 101.2.2.1 Ex isting in stal la tions. Ex cept as oth er -wise pro vided for in this chap ter, a pro vi sion in this codeshall not re quire the re moval, al ter ation or aban don mentof, nor pre vent the con tin ued uti li za tion and main te nance of, an ex ist ing build ing en ve lope, me chan i cal, ser vicewa ter-heat ing, elec tri cal dis tri bu tion or il lu mi na tion sys -tem law fully in ex is tence at the time of the adop tion ofthis code.

[EB] 101.2.2.2 Ad di tions, al ter ations or re pairs. Ad di -tions, al ter ations, ren o va tions or re pairs to a build ing en -

ve lope, me chan i cal, ser vice wa ter-heat ing, elec tri caldis tri bu tion or il lu mi na tion sys tem or por tion thereofshall con form to the pro vi sions of this code as they re lateto new con struc tion with out re quir ing the un al tered por -tion(s) of the ex ist ing sys tem to com ply with all of the re -quire ments of this code. Ad di tions, al ter ations or re pairsshall not cause any one of the afore men tioned and ex ist -ing sys tems to be come un safe, haz ard ous or over loaded.

[EB] 101.2.2.3 His toric build ings. The pro vi sions ofthis code re lat ing to the con struc tion, al ter ation, re pair,en large ment, res to ra tion, re lo ca tion or move ment ofbuild ings or struc tures shall not be man da tory for ex ist -ing build ings or struc tures spe cif i cally iden ti fied andclas si fied as his tor i cally sig nif i cant by the state or lo calju ris dic tion, listed in The Na tional Reg is ter of His toricPlaces or which have been de ter mined to be el i gi ble forsuch list ing.

[EB] 101.2.2.4 Change in oc cu pancy. It shall be un law -ful to make a change in the oc cu pancy of any build ing orstruc ture which would re sult in an in crease in de mand for ei ther fos sil fuel or elec tri cal en ergy sup ply un less suchbuild ing or struc ture is made to com ply with the re quire -ments of this code or oth er wise ap proved by the au thor ity hav ing ju ris dic tion. The code of fi cial shall cer tify thatsuch build ing or struc ture meets the in tent of the pro vi -sions of law gov ern ing build ing con struc tion for the pro -posed new oc cu pancy and that such change of oc cu pancy does not re sult in any in crease in de mand for ei ther fos silfuel or elec tri cal en ergy sup ply or any haz ard to the pub -lic health, safety or wel fare.

101.2.3 Mixed oc cu pancy. When a build ing houses morethan one oc cu pancy, each por tion of the build ing shall con -form to the re quire ments for the oc cu pancy housed therein.Where mi nor ac ces sory uses do not oc cupy more than 10per cent of the area of any floor of a build ing, the ma jor useshall be con sid ered the build ing oc cu pancy. Build ings,other than de tached one- and two-fam ily dwell ings andtownhouses, with a height of four or more sto ries abovegrade shall be con sid ered com mer cial build ings for pur -poses of this code, re gard less of the num ber of floors that are clas si fied as res i den tial oc cu pancy.

101.3 In tent. The pro vi sions of this code shall reg u late the de -sign of build ing en ve lopes for ad e quate ther mal re sis tance andlow air leak age and the de sign and se lec tion of me chan i cal,elec tri cal, ser vice wa ter-heat ing and il lu mi na tion sys tems andequip ment which will en able ef fec tive use of en ergy in newbuild ing con struc tion. It is in tended that these pro vi sions pro -vide flex i bil ity to per mit the use of in no va tive ap proaches andtech niques to achieve ef fec tive uti li za tion of en ergy. This codeis not in tended to abridge safety, health or en vi ron men tal re -quire ments un der other ap pli ca ble codes or or di nances.

2003 INTERNATIONAL ENERGY CONSERVATION CODE® 1

101.4 Com pli ance. Com pli ance with this code shall be de ter -mined in ac cor dance with Sec tions 101.4.1 and 101.4.2.

101.4.1 Res i den tial build ings. For res i den tial build ings the fol low ing shall be used as the ba sis for com pli ance as sess -ment: a sys tems ap proach for the en tire build ing (Chap ter4), an ap proach based on per for mance of in di vid ual com po -nents of the build ing en ve lope (Chap ter 5), an ap proachbased on per for mance of the to tal build ing en ve lope (Chap -ter 5), an ap proach based on ac cept able prac tice for each en -ve lope com po nent (Chap ter 5), an ap proach by pre scrip tivespec i fi ca tion for in di vid ual com po nents of the build ing en -ve lope (Chap ter 5), or an ap proach based on sim pli fied, pre -scrip tive spec i fi ca tion (Chap ter 6) where the con di tions setforth in Sec tion 101.4.1.1 or 101.4.1.2 are sat is fied.

101.4.1.1 De tached one- and two-fam ily dwell ings.When the glaz ing area does not ex ceed 15 per cent of thegross area of ex te rior walls.

101.4.1.2 Res i den tial build ings, Group R-2, R-4 ortown houses. When the glaz ing area does not ex ceed 25per cent of the gross area of ex te rior walls.

101.4.2 Com mer cial build ings. For com mer cial build ings, a pre scrip tive or per for mance-based ap proach (Chap ter 7)or as spec i fied by ac cept able prac tice (Chap ter 8) shall beused as the ba sis for compliance as sess ment.

SECTION 102MATERIALS, SYSTEMS AND EQUIPMENT

102.1 Gen eral. Ma te rials, equip ment and sys tems shall beiden ti fied in a man ner that will al low a de ter mi na tion of theircom pli ance with the ap pli ca ble pro vi sions of this code.

102.2 Ma te rials, equip ment and sys tems in stal la tion. All in -su la tion ma te ri als, caulk ing and weath er strip ping, fen es tra tionas sem blies, me chan i cal equip ment and sys tems com po nents,and wa ter-heat ing equip ment and sys tem com po nents shall bein stalled in ac cor dance with the man u fac turer’s in stal la tion in -struc tions.

102.3 Main te nance in for ma tion. Re quired reg u lar main te -nance ac tions shall be clearly stated and in cor po rated on areadily ac ces si ble la bel. Such la bel shall in clude the ti tle orpub li ca tion num ber, the op er a tion and main te nance man ual forthat par tic u lar model and type of prod uct. Main te nance in struc -tions shall be fur nished for equip ment that re quires pre ven tivemain te nance for ef fi cient op er a tion.

102.4 In su la tion in stal la tion. Roof/ceil ing, floor, wall cav ityand duct dis tri bu tion sys tems in su la tion shall be in stalled in aman ner that per mits in spec tion of the man u fac turer’s R-valueiden ti fi ca tion mark.

102.4.1 Pro tec tion of ex posed foun da tion in su la tion. In -su la tion ap plied to the ex te rior of foun da tion walls andaround the per im e ter of slab-on-grade floors shall have arigid, opaque and weather-re sis tant pro tec tive cov er ing topre vent the deg ra da tion of the in su la tion’s ther mal per for -mance. The pro tec tive cov er ing shall cover the ex posed area of the ex te rior in su la tion and ex tend a min i mum of 6 inches(153 mm) be low grade.

102.5 Iden ti fi ca tion. Ma te rials, equip ment and sys tems shallbe iden ti fied in ac cor dance with Sec tions 102.5.1, 102.5.2 and102.5.3.

102.5.1 Build ing en ve lope in su la tion. A ther mal re sis -tance (R) iden ti fi ca tion mark shall be ap plied by the man u -fac turer to each piece of build ing en ve lope in su la tion 12inches (305 mm) or greater in width.

Al ter na tively, the in su la tion in staller shall pro vide asigned and dated cer tif i ca tion for the in su la tion in stalled ineach el e ment of the build ing en ve lope, list ing the type of in -su la tion in stal la tions in roof/ceil ings, the man u fac turer andthe R-value. For blown-in or sprayed in su la tion, the in staller shall also pro vide the ini tial in stalled thick ness, the set tledthick ness, the cov er age area and the num ber of bags in -stalled. Where blown-in or sprayed in su la tion is in stalled inwalls, floors and ca the dral ceil ings, the in staller shall pro -vide a cer tif i ca tion of the in stalled den sity and R-value. Thein staller shall post the cer tif i ca tion in a con spic u ous placeon the job site.

102.5.1.1 Roof/ceil ing in su la tion. The thick ness ofroof/ceil ing in su la tion that is ei ther blown in or sprayedshall be iden ti fied by thick ness mark ers that are la beledin inches or mil li me ters in stalled at least one for ev ery300 square feet (28 m2) through out the at tic space. Themark ers shall be af fixed to the trusses or joists andmarked with the min i mum ini tial in stalled thick ness andmin i mum set tled thick ness with num bers a min i mum of1 inch (25 mm) in height. Each marker shall face the at ticac cess. The thick ness of in stalled in su la tion shall meet or ex ceed the min i mum ini tial in stalled thick ness shown bythe marker.

102.5.2 Fen es tra tion prod uct rat ing, cer tif i ca tion and la -bel ing. U-fac tors of fen es tra tion prod ucts (win dows, doorsand sky lights) shall be de ter mined in ac cor dance withNFRC 100 by an ac cred ited, in de pend ent lab o ra tory, and la -beled and cer ti fied by the man u fac turer. The so lar heat gainco ef fi cient (SHGC) of glazed fen es tra tion prod ucts (win -dows, glazed doors and sky lights) shall be de ter mined in ac -cor dance with NFRC 200 by an ac cred ited, in de pend entlab o ra tory, and la beled and cer ti fied by the man u fac turer.Where a shad ing co ef fi cient for a fen es tra tion prod uct isused, it shall be de ter mined by con vert ing the prod uct’sSHGC, as de ter mined in ac cor dance with NFRC 200, to ashad ing co ef fi cient, by di vid ing the SHGC by 0.87. Suchcer ti fied and la beled U-fac tors and SHGCs shall be ac -cepted for pur poses of de ter min ing com pli ance with thebuild ing en ve lope re quire ments of this code.

When a man u fac turer has not de ter mined prod uct U-fac -tor in ac cor dance with NFRC 100 for a par tic u lar prod uctline, com pli ance with the build ing en ve lope re quire ments of this code shall be de ter mined by as sign ing such prod ucts ade fault U-fac tor in ac cor dance with Ta bles 102.5.2(1) and102.5.2(2). When a SHGC or shad ing co ef fi cient is used forcode com pli ance and a man u fac turer has not de ter minedprod uct SHGC in ac cor dance with NFRC 200 for a par tic u -lar prod uct line, com pli ance with the build ing en ve lope re -quire ments of this code shall be de ter mined by as sign ingsuch prod ucts a de fault SHGC in ac cor dance with Ta ble

ADMINISTRATION

2 2003 INTERNATIONAL ENERGY CONSERVATION CODE®

102.5.2(3). Prod uct fea tures must be ver i fi able for the prod -uct to qual ify for the de fault value as so ci ated with those fea -tures. Where the ex is tence of a par tic u lar fea ture can not bede ter mined with rea son able cer tainty, the prod uct shall notre ceive credit for that fea ture. Where a com pos ite of ma te ri -als from two dif fer ent prod uct types is used, the prod uctshall be as signed the higher U-fac tor.

TABLE 102.5.2(1)U-FACTOR DEFAULT TABLE FOR WINDOWS,

GLAZED DOORS AND SKYLIGHTS

FRAME MATERIAL AND PRODUCT TYPEaSINGLEGLAZED

DOUBLEGLAZED

Metal without thermal break: Curtain wall Fixed Garden window Operable (including sliding and swinging glass doors) Site-assembled sloped/overhead glazing Skylight

1.221.132.60

1.271.361.98

0.790.691.81

0.870.821.31

Metal with thermal break: Curtain wall Fixed Operable (including sliding and swinging glass doors) Site-assembled sloped/overhead glazing Skylight

1.111.07

1.081.251.89

0.680.63

0.650.701.11

Reinforced vinyl/metal clad wood: Fixed Operable (including sliding and swinging glass doors) Skylight

0.98

0.901.75

0.56

0.571.05

Wood/vinyl/fiberglass: Fixed Garden window Operable (including sliding and swinging glass doors) Skylight

0.982.31

0.891.47

0.561.61

0.550.84

a. Glass-block as sem blies with mor tar but with out re in forc ing or fram ing shall have a U-fac tor of 0.60.

102.5.3 Duct dis tri bu tion sys tems in su la tion. A ther malre sis tance (R) iden ti fi ca tion mark shall be ap plied by theman u fac turer in max i mum in ter vals of no greater than 10feet (3048 mm) to in su lated flex i ble duct prod ucts show ingthe ther mal per for mance R-value for the duct in su la tion it -self (ex clud ing air films, va por re tard ers or other duct com -po nents).

SECTION 103ALTERNATE MATERIALS—METHOD

OF CONSTRUCTION, DESIGN ORINSULATING SYSTEMS

103.1 Gen eral. The pro vi sions of this code are not in tended topre vent the use of any ma te rial, method of con struc tion, de signor in su lat ing sys tem not spe cif i cally pre scribed herein, pro -vided that such con struc tion, de sign or in su lat ing sys tem hasbeen ap proved by the code of fi cial as meet ing the in tent of thecode.

Com pli ance with spe cific pro vi sions of this code shall be de -ter mined through the use of com puter soft ware, worksheets,com pli ance man u als and other sim i lar ma te ri als when theyhave been ap proved by the code of fi cial as meet ing the in tent ofthis code.

ADMINISTRATION


TABLE 102.5.2(3)SHGC DEFAULT TABLE FOR FENESTRATION

PRODUCT DESCRIPTION

SINGLE GLAZED DOUBLE GLAZED

Clear Bronze Green Gray

Clear+

Clear

Bronze+

Clear

Green+

Clear

Gray+

Clear

Metal frames Fixed Operable

0.780.75

0.670.64

0.650.62

0.640.61

0.680.66

0.570.55

0.550.53

0.540.52

Nonmetal frames Fixed Operable

0.750.63

0.640.54

0.620.53

0.610.52

0.660.55

0.540.46

0.530.45

0.520.44

TABLE 102.5.2(2)U-FACTOR DEFAULT TABLE FOR NONGLAZED DOORS

DOOR TYPEWITH FOAM

CORE

WITHOUTFOAMCORE

Steel doors (1.75 inches thick) 0.35 0.60

WITHSTORMDOOR

WITHOUTSTORMDOOR

Wood doors (1.75 inches thick) Hollow core flush Panel with 0.438-inch panels Panel with 1.125-inch panels Solid core flush

0.320.360.280.26

0.460.540.390.40

For SI: 1 inch = 25.4 mm.

SECTION 104CONSTRUCTION DOCUMENTS

104.1 Gen eral. Con struc tion doc u ments and other sup port ingdata shall be sub mit ted in one or more sets with each ap pli ca -tion for a per mit. The con struc tion doc u ments and de signs sub -mit ted un der the pro vi sions of Chap ter 4 shall be pre pared by areg is tered de sign pro fes sional where re quired by the stat utes of the ju ris dic tion in which the pro ject is to be con structed. Wherespe cial con di tions ex ist, the code of fi cial is au tho rized to re -quire ad di tional con struc tion doc u ments to be pre pared by areg is tered de sign pro fes sional.

Ex cep tions:

1. The code of fi cial is au tho rized to waive the sub mis -sion of con struc tion doc u ments and other sup port ingdata not re quired to be pre pared by a reg is tered de signpro fes sional if it is found that the na ture of the workap plied for is such that re view ing of con struc tion doc -u ments is not nec es sary to ob tain com pli ance withthis code.

2. For res i den tial build ings hav ing a con di tioned floorarea of 5,000 square feet (465 m2) or less, de signs sub -mit ted un der the pro vi sions of Chap ter 4 shall be pre -pared by any one hav ing qual i fi ca tions ac cept able tothe code of fi cial.

104.2 In for ma tion on con struc tion doc u ments. Con struc -tion doc u ments shall be drawn to scale upon suit able ma te rial.Elec tronic me dia doc u ments are per mit ted to be sub mit tedwhen ap proved by the code of fi cial. Con struc tion doc u mentsshall be of suf fi cient clar ity to in di cate the lo ca tion, na ture andex tent of the work pro posed and show in suf fi cient de tail per ti -nent data and fea tures of the build ing and the equip ment andsys tems as herein gov erned, in clud ing, but not lim ited to, de -sign cri te ria, ex te rior en ve lope com po nent ma te ri als, U-fac torsof the en ve lope sys tems, U-fac tors of fen es tra tion prod ucts,R-val ues of in su lat ing ma te ri als, size and type of ap pa ra tus andequip ment, equip ment and sys tems con trols and other per ti -nent data to in di cate compliance with the re quire ments of thiscode and rel e vant laws, or di nances, rules and reg u la tions, asde ter mined by the code of fi cial.

SECTION 105INSPECTIONS

105.1 Gen eral. Con struc tion or work for which a per mit is re -quired shall be sub ject to in spec tion by the code of fi cial.

105.2 Ap provals re quired. No work shall be done on any partof the build ing or struc ture be yond the point in di cated in eachsuc ces sive in spec tion with out first ob tain ing the writ ten ap -proval of the code of fi cial. No con struc tion shall be con cealedwith out in spec tion ap proval.

105.3 Fi nal in spec tion. There shall be a fi nal in spec tion andap proval for build ings when com pleted and ready for oc cu -pancy.

105.4 Re in spec tion. A struc ture shall be re in spected when de -ter mined nec es sary by the code of fi cial.

SECTION 106VALIDITY

106.1 Gen eral. If a sec tion, sub sec tion, sen tence, clause orphrase of this code is, for any rea son, held to be un con sti tu -tional, such de ci sion shall not af fect the va lid ity of the re main -ing por tions of this code.

SECTION 107REFERENCED STANDARDS

107.1 Gen eral. The stan dards, and por tions thereof, which arere ferred to in this code and listed in Chap ter 10, shall be con sid -ered part of the re quire ments of this code to the ex tent of suchref er ence.

107.2 Con flicting re quire ments. When a sec tion of this codeand a sec tion of a ref er enced stan dard from Chap ter 10 spec ifydif fer ent ma te ri als, meth ods of con struc tion or other re quire -ments, the pro vi sions of this code shall ap ply.

ADMINISTRATION


CHAPTER 2

DEFINITIONS

SECTION 201GENERAL

201.1 Scope. Un less oth er wise ex pressly stated, the fol low ingwords and terms shall, for the pur poses of this code, have themean ings in di cated in this chap ter.

201.2 Interchangeability. Words used in the pres ent tense in -clude the fu ture; words in the mas cu line gen der in clude thefem i nine and neu ter; the sin gu lar num ber in cludes the plu raland the plu ral, the sin gu lar.

201.3 Terms de fined in other codes. Where terms are not de -fined in this code and are de fined in the In ter na tional Build ingCode, ICC Elec tri cal Code, In ter na tional Fire Code, In ter na -tional Fuel Gas Code, In ter na tional Me chan i cal Code or theIn ter na tional Plumbing Code, such terms shall have mean ingsas cribed to them as in those codes.

201.4 Terms not de fined. Where terms are not de fined through the meth ods au tho rized by this sec tion, such terms shall haveor di narily ac cepted mean ings such as the con text im plies.

SECTION 202GENERAL DEFINITIONS

AC CES SI BLE (AS AP PLIED TO EQUIP MENT). Ad -mitting close ap proach be cause not guarded by locked doors,el e va tion or other ef fec tive means (see “Readily ac ces si ble”).

AD DI TION. An ex ten sion or in crease in the height, con di -tioned floor area or con di tioned vol ume of a build ing or struc -ture.

AIR TRANS PORT FACTOR. The ra tio of the rate of use fulsen si ble heat re moval from the con di tioned space to the en ergyin put to the sup ply and re turn fan mo tor(s), ex pressed in con sis -tent units and un der the des ig nated op er at ing con di tions.

AL TER ATION. Any con struc tion, ren o va tion or change in ame chan i cal sys tem that in volves an ex ten sion, ad di tion orchange to the ar range ment, type or pur pose of the orig i nal in -stal la tion.

AN NUAL FUEL UTI LI ZA TION EFFICIENCY (AFUE).The ra tio of an nual out put en ergy to an nual in put en ergy whichin cludes any nonheating sea son pi lot in put loss, and for gas oroil-fired fur naces or boil ers, does not in clude elec tri cal en ergy.

AP PROVED. Ap proved by the code of fi cial or other au thor ityhav ing ju ris dic tion as the re sult of in ves ti ga tion and tests con -ducted by said of fi cial or au thor ity, or by rea son of ac ceptedprin ci ples or tests by na tion ally rec og nized or ga ni za tions.

AU TO MATIC. Self-act ing, op er at ing by its own mech a nismwhen ac tu ated by some im per sonal in flu ence, as, for ex am ple,a change in cur rent strength, pres sure, tem per a ture or me chan i -cal con fig u ra tion (see “Man ual”).

BASEMENT WALL. The opaque por tion of a wall which en -closes one side of a base ment and hav ing an av er age be -

low-grade area greater than or equal to 50 per cent of its to talwall area, in clud ing open ings (see “Gross area of ex te riorwalls”).

BTU. Ab bre vi a tion for Brit ish ther mal unit, which is the quan -tity of heat re quired to raise the tem per a ture of 1 pound (0.454kg) of wa ter 1°F (∆0.56°C), (1 Btu = 1,055 J).

BUILDING. Any struc ture oc cu pied or in tended for sup port -ing or shel ter ing any use or oc cu pancy.

BUILDING EN VELOPE. The el e ments of a build ing whichen close con di tioned spaces through which ther mal en ergy isca pa ble of be ing trans ferred to or from the ex te rior or to or from spaces ex empted by the pro vi sions of Sec tion 101.2.1.

CODE OF FI CIAL. The of fi cer or other des ig nated au thor itycharged with the ad min is tra tion and en force ment of this code,or a duly au tho rized rep re sen ta tive.

CO EF FI CIENT OF PER FOR MANCE (COP)—COOLING. The ra tio of the rate of heat re moval to the rate ofen ergy in put in con sis tent units, for a com plete cool ing sys temor fac tory-as sem bled equip ment, as tested un der a na tion allyrec og nized stan dard or des ig nated op er at ing con di tions.

CO EF FI CIENT OF PER FOR MANCE (COP)—HEATPUMP—HEATING. The ra tio of the rate of heat de liv ered tothe rate of en ergy in put, in con sis tent units, for a com plete heatpump sys tem un der des ig nated op er at ing con di tions. Sup ple -men tal heat shall not be con sid ered when check ing com pli ancewith the heat pump equip ment (COPs listed in the ta bles in Sec -tions 503 and 803).

COM FORT EN VELOPE. The ar eas de fined on a psy chro -met ric chart and en clos ing the range of op er a tive tem per a turesand humidities for both the win ter and sum mer com fort zonesas de picted in Fig ure 2 of ASHRAE 55.

COM MER CIAL BUILDING. All build ings other than de -tached one- and two-fam ily dwell ings, townhouses and res i -den tial build ings, Groups R-2 and R-4.

CON DENSER. A heat exchanger de signed to liq uefy re frig er -ant va por by re moval of heat.

CON DENSING UNIT. A spe cific re frig er at ing ma chinecom bi na tion for a given re frig er ant, con sist ing of one or morepower-driven com pres sors, con dens ers, liq uid re ceiv ers (whenre quired), and the reg u larly fur nished ac ces so ries.

CON DI TIONED FLOOR AREA. The hor i zon tal pro jec tionof that por tion of in te rior space which is con tained within ex te -rior walls and which is con di tioned di rectly or in di rectly by anen ergy-us ing sys tem.

CON DI TIONED SPACE. A heated or cooled space, or both,within a build ing and, where re quired, pro vided withhumidification or dehumidification means so as to be ca pa bleof main tain ing a space con di tion fall ing within the com fort en -ve lope set forth in ASHRAE 55.


COOLED SPACE. Space within a build ing which is pro videdwith a pos i tive cool ing sup ply (see “Pos i tive cool ing sup ply”).

CRAWL SPACE WALL. The opaque por tion of a wall whichen closes a crawl space and is par tially or to tally be low grade.

DEADBAND. The tem per a ture range in which no heat ing orcool ing is used.

DE GREE DAY, COOLING. A unit, based on tem per a turedif fer ence and time, used in es ti mat ing cool ing en ergy con -sump tion and spec i fy ing nom i nal cool ing load of a build ing insum mer. For any one day, when the mean tem per a ture is morethan 65°F (18°C), there are as many de gree days as there are de -grees Fahr en heit (Cel sius) dif fer ence in tem per a ture be tweenthe mean tem per a ture for the day and 65°F (18°C). An nualcool ing de gree days (CDD) are the sum of the de gree days overa cal en dar year.

DE GREE DAY, HEATING. A unit, based on tem per a ture dif -fer ence and time, used in es ti mat ing heat ing en ergy con sump -tion and spec i fy ing nom i nal heat ing load of a build ing inwin ter. For any one day, when the mean tem per a ture is less than 65°F (18°C), there are as many de gree days as there are de greesFahr en heit (Cel sius) dif fer ence in tem per a ture be tween themean tem per a ture for the day and 65°F (18°C). An nual heat ingde gree days (HDD) are the sum of the de gree days over a cal en -dar year.

DUCT. A tube or con duit uti lized for con vey ing air. The airpas sages of self-con tained sys tems are not to be con strued asair ducts.

DUCT SYS TEM. A con tin u ous pas sage way for the trans mis -sion of air that, in ad di tion to ducts, in cludes duct fit tings,damp ers, ple nums, fans and ac ces sory air-han dling equip mentand ap pli ances.

DWELLING UNIT. A sin gle house keep ing unit com prised of one or more rooms pro vid ing com plete in de pend ent liv ing fa -cil i ties for one or more per sons, in clud ing per ma nent pro vi -sions for liv ing, sleep ing, eat ing, cook ing and san i ta tion.

ECON O MIZER. A ducting ar range ment and au to matic con -trol sys tem that al lows a cool ing sup ply fan sys tem to sup plyout door air to re duce or elim i nate the need for me chan i cal re -frig er a tion dur ing mild or cold weather.

EN ERGY. The ca pac ity for do ing work (tak ing a num ber offorms) which is ca pa ble of be ing trans formed from one into an -other, such as ther mal (heat), me chan i cal (work), elec tri cal andchem i cal in cus tom ary units, mea sured in joules (J), ki lo -watt-hours (kWh) or Brit ish ther mal units (Btu).

EN ERGY ANAL Y SIS. A method for de ter min ing the an nual(8,760 hours) en ergy use of the proposed de sign and standardde sign based on hour-by-hour es ti mates of en ergy use.

EN ERGY COST. The to tal es ti mated an nual cost for pur -chased en ergy for the build ing, in clud ing any de mand charges,fuel ad just ment fac tors and de liv ery charges ap pli ca ble to thebuild ing.

EN ERGY EFFICIENCY RA TIO (EER). The ra tio of netequip ment cool ing ca pac ity in Brit ish ther mal units per hour(Btu/h) (W) to to tal rate of elec tric in put in watts un der des ig -nated op er at ing con di tions. When con sis tent units are used,

this ra tio be comes equal to COP (see also “Co ef fi cient of per -for mance”).

EVAP O RA TOR. That part of the sys tem in which liq uid re -frig er ant is va por ized to pro duce re frig er a tion.

EX TE RIOR EN VELOPE. See “Build ing en ve lope.”

EX TE RIOR WALL. An above-grade wall en clos ing con di -tioned space which is ver ti cal or sloped at an an gle 60 de grees(1.1 rad) or greater from the hor i zon tal (see “Roof as sem bly”).In cludes be tween-floor span drels, pe riph eral edges of floors,roof and base ment knee walls, dor mer walls, ga ble end walls,walls en clos ing a man sard roof, and base ment walls with an av -er age be low-grade wall area which is less than 50 per cent of the to tal opaque and nonopaque area of that en clos ing side.

FEN ES TRA TION. Sky lights, roof win dows, ver ti cal win -dows (whether fixed or move able), opaque doors, glazed doors, glass block, and com bi na tion opaque/glazed doors.

FUR NACE, DUCT. A fur nace nor mally in stalled in dis tri bu -tion ducts of air-con di tion ing sys tems to sup ply warm air forheat ing and which de pends on a blower not fur nished as part ofthe duct fur nace for air cir cu la tion.

FUR NACE, WARM AIR. A self-con tained, in di rect-fired orelec tri cally heated fur nace that sup plies heated air throughducts to spaces that re quire it.

GLAZING AREA. To tal area of the glazed fen es tra tion mea -sured us ing the rough open ing and in clud ing sash, curb ing orother fram ing el e ments that en close con di tioned space.Glazing area in cludes the area of glazed fen es tra tion as sem -blies in walls bound ing con di tioned base ments. For doorswhere the day light open ing area is less than 50 per cent of thedoor area, the glaz ing area is the day light open ing area. For allother doors, the glaz ing area is the rough open ing area for thedoor in clud ing the door and the frame.

GROSS AREA OF EX TE RIOR WALLS. The nor mal pro -jec tion of all ex te rior walls, in clud ing the area of all win dowsand doors in stalled therein (see “Ex te rior wall”).

GROSS FLOOR AREA. The sum of the ar eas of sev eralfloors of the build ing, in clud ing base ments, cel lars, mez za nineand in ter me di ate floored tiers and pent houses of head roomheight, mea sured from the ex te rior faces of ex te rior walls orfrom the cen ter line of walls sep a rat ing build ings, but ex clud -ing:

1. Covered walk ways, open roofed-over ar eas, porches andsim i lar spaces.

2. Pipe trenches, ex te rior ter races or steps, chim neys, roofover hangs and sim i lar fea tures.

HEAT. The form of en ergy that is trans ferred by vir tue of atem per a ture dif fer ence or a change in state of a ma te rial.

HEAT CA PAC ITY (HC). The amount of heat nec es sary toraise the tem per a ture of a given mass by one de gree. The heatca pac ity of a build ing el e ment is the sum of the heat ca pac i tiesof each of its com po nents.

HEAT PUMP. A re frig er a tion sys tem that ex tracts heat fromone sub stance and trans fers it to an other por tion of the samesub stance or to a sec ond sub stance at a higher tem per a ture for aben e fi cial pur pose.

DEFINITIONS


HEAT RE JEC TION EQUIP MENT. Equip ment used incom fort cool ing sys tems such as air-cooled con dens ers, opencool ing tow ers, closed-cir cuit cool ing tow ers and evap o ra tivecon dens ers.

HEAT TRAP. An ar range ment of pip ing and fit tings, such asel bows, or a com mer cially avail able heat trap, that pre ventsthermosyphoning of hot wa ter dur ing standby pe ri ods.

HEATED SLAB. Slab-on-grade con struc tion in which theheat ing el e ments or hot air dis tri bu tion sys tem is in con tactwith or placed within the slab or the subgrade.

HEATED SPACE. Space within a build ing which is pro videdwith a pos i tive heat sup ply (see “Pos i tive heat sup ply”). Fin -ished liv ing space within a base ment with reg is ters or heat ingde vices de signed to sup ply heat to a base ment space shall au to -mat i cally de fine that space as heated space.

HEATING SEA SONAL PER FOR MANCE FACTOR(HSPF). The to tal heat ing out put of a heat pump dur ing its nor -mal an nual us age pe riod for heat ing, in Btu, di vided by the to talelec tric en ergy in put dur ing the same pe riod, in watt hours, asde ter mined by DOE 10 CFR Part 430, Subpart B, Test Pro ce -dures and based on Re gion 4.

HUMIDISTAT. A reg u la tory de vice, ac tu ated by changes inhu mid ity, used for au to matic con trol of rel a tive hu mid ity.

HVAC. Heating, ven ti lat ing and air con di tion ing.

HVAC SYS TEM. The equip ment, dis tri bu tion net work, andter mi nals that pro vide ei ther col lec tively or in di vid u ally thepro cesses of heat ing, ven ti lat ing, or air con di tion ing to a build -ing.

HVAC SYS TEM COM PO NENTS. HVAC sys tem com po -nents pro vide, in one or more fac tory-as sem bled pack ages,means for chill ing or heat ing wa ter, or both, with con trolledtem per a ture for de liv ery to ter mi nal units serv ing the con di -tioned spaces of the build ing. Types of HVAC sys tem com po -nents in clude, but are not lim ited to, wa ter chiller pack ages,re cip ro cat ing con dens ing units and wa ter source (hydronic)heat pumps (see “HVAC sys tem equip ment”).

HVAC SYS TEM EQUIP MENT. HVAC sys tem equip mentpro vides, in one (sin gle pack age) or more (split sys tem) fac -tory-as sem bled pack ages, means for air cir cu la tion, air clean -ing, air cool ing with con trol led tem per a ture andde hu mid i fi cation and, op tion ally, ei ther alone or in com bi na -tion with a heat ing plant, the func tions of heat ing and hu mid i -fy ing. The cool ing func tion is ei ther elec tri cally or heatop er ated and the re frig er ant con denser is air, wa ter orevaporatively cooled. Where the equip ment is pro vided in more than one pack age, the sep a rate pack ages shall be de signed bythe man u fac turer to be used to gether. The equip ment shall beper mit ted to pro vide the heat ing func tion as a heat pump or bythe use of elec tric or fos sil-fuel-fired el e ments. (The word“equip ment” used with out a mod i fy ing ad jec tive, in ac cor -dance with com mon in dus try us age, ap plies ei ther to HVACsys tem equip ment or HVAC sys tem com po nents.)

IN FIL TRA TION. The un con trolled in ward air leak agethrough cracks and in ter stices in any build ing el e ment andaround win dows and doors of a build ing caused by the pres sureef fects of wind or the ef fect of dif fer ences in the in door and out -door air den sity or both.

IN SU LATING SHEATHING. An in su lat ing board hav ing amin i mum ther mal re sis tance of R-2 of the core ma te rial.

IN TE GRATED PART-LOAD VALUE (IPLV). A sin glemeasure of merit, based on part-load EER or COP ex press ingpart-load ef fi ciency for air-con di tion ing and heat pump equip -ment on the ba sis of weighted op er a tion at var i ous load ca pac i -ties for the equip ment.

LA BELED. De vices, equip ment, ap pli ances, as sem blies orma te ri als to which have been af fixed a la bel, seal, sym bol orother iden ti fy ing mark of a na tion ally rec og nized test ing lab o -ra tory, in spec tion agency or other or ga ni za tion con cerned withprod uct eval u a tion that main tains pe ri odic in spec tion of thepro duc tion of the above-la beled items and by whose la bel theman u fac turer at tests to com pli ance with ap pli ca ble na tion allyrec og nized stan dards.

LISTED. Equip ment, ap pli ances, as sem blies or ma te ri als in -cluded in a list pub lished by a na tion ally rec og nized test ing lab -o ra tory, in spec tion agency or other or ga ni za tion con cernedwith prod uct eval u a tion that main tains pe ri odic in spec tion ofpro duc tion of listed equip ment, ap pli ances, as sem blies or ma -te rial, and whose list ing states ei ther that the equip ment, ap pli -ances, as sem blies, or ma te rial meets na tion ally rec og nizedstan dards or has been tested and found suit able for use in aspec i fied man ner.

LOW-VOLT AGE LIGHTING. Lighting equip ment that ispow ered through a trans former such as ca ble con duc tor, railcon duc tor and track light ing.

LUMINAIRE. A com plete light ing unit con sist ing of at leastone lamp and the parts de signed to dis trib ute the light, to po si -tion and pro tect the lamp, to con nect the lamp to the power sup -ply and bal last ing, when ap pli ca ble. Luminaires are com monly re ferred to as “light ing fix tures.”

MAN UAL. Ca pa ble of be ing op er ated by per sonal in ter ven -tion (see “Au to matic”).

MUL TI FAM ILY DWELLING. A build ing con tain ing threeor more dwell ing units.

MUL TI PLE SIN GLE-FAM ILY DWELLING (TOWN -HOUSE). A build ing not more than three sto ries in height con -sist ing of mul ti ple sin gle-fam ily dwell ing units, con structed ina group of three or more at tached units in which each unit ex -tends from foun da tion to roof and with open space on at leasttwo sides.

OC CU PANCY. The pur pose for which a build ing, or por tionthereof, is uti lized or oc cu pied.

OPAQUE AREAS. All ex posed ar eas of a build ing en ve lopewhich en close con di tioned space, ex cept open ings for win -dows, sky lights, doors and build ing ser vice sys tems.

OUT DOOR AIR. Air taken from the out doors and, there fore,not pre vi ously cir cu lated through the sys tem.

OZONE DE PLE TION FACTOR. A rel a tive mea sure of thepo tency of chem i cals in de plet ing strato spheric ozone. Theozone de ple tion fac tor po ten tial de pends on the chlo rine andbro mine con tent and the at mo spheric life time of the chem i cal.The de ple tion fac tor po ten tial is nor mal ized such that the fac tor for CFC-11 is set equal to unity and the fac tors for the otherchem i cals in di cate their po ten tial rel a tive to CFC-11.


DEFINITIONS

PACK AGED TER MI NAL AIR CON DI TIONER (PTAC).A fac tory-se lected wall sleeve and sep a rate unencased com bi -na tion of heat ing and cool ing com po nents, as sem blies or sec -tions (in tended for mount ing through the wall to serve a sin gleroom or zone). It in cludes heat ing ca pa bil ity by hot wa ter,steam or elec tric ity. (For the com plete tech ni cal def i ni tion, seeARI 310/380.)

PACK AGED TER MI NAL HEAT PUMP. A PTAC ca pa bleof us ing the re frig er a tion sys tem in a re verse cy cle or heatpump mode to pro vide heat. (For the com plete tech ni cal def i ni -tion, see ARI 310/380.)

POS I TIVE COOLING SUPPLY. Me chan i cal cool ing de lib -er ately sup plied to a space, such as through a sup ply reg is ter.Also, me chan i cal cool ing in di rectly sup plied to a spacethrough un in su lat ed sur faces of space-cool ing com po nents,such as evap o ra tor coil cases and cool ing dis tri bu tion sys temswhich con tin u ally main tain air tem per a tures within the spaceof 85°F (29°C) or lower dur ing nor mal op er a tion. To be con sid -ered ex empt from in clu sion in this def i ni tion, such sur facesshall com ply with the in su la tion re quire ments of this code.

POS I TIVE HEAT SUPPLY. Heat de lib er ately sup plied to aspace by de sign, such as a sup ply reg is ter, ra di a tor or heat ingel e ment. Also, heat in di rectly sup plied to a space through un in -su lat ed sur faces of ser vice wa ter heat ers and space-heat ingcom po nents, such as fur naces, boil ers and heat ing and cool ingdis tri bu tion sys tems which con tin u ally main tain air tem per a -ture within the space of 50°F (10°C) or higher dur ing nor malop er a tion. To be con sid ered ex empt from in clu sion in this def i -ni tion, such sur faces shall com ply with the in su la tion re quire -ments of this code.

PRO POSED DESIGN. A de scrip tion of the pro posed build -ing de sign used to es ti mate an nual en ergy costs for de ter min ing com pli ance based on to tal build ing per for mance.

READILY AC CES SI BLE. Ca pa ble of be ing reached quicklyfor op er a tion, re newal or in spec tions, with out re quir ing thoseto whom ready ac cess is req ui site to climb over or re move ob -sta cles or to re sort to por ta ble lad ders or ac cess equip ment (see“Ac ces si ble”).

RE FRIG ER ANT. A sub stance uti lized to pro duce re frig er a -tion by its ex pan sion or va por iza tion or ab sorp tion.

RE NEW ABLE EN ERGY SOURCES. Sources of en ergy(ex clud ing min er als) de rived from in com ing so lar ra di a tion,in clud ing nat u ral daylighting and photosynthetic pro cesses;from phe nom ena re sult ing there from, in clud ing wind, wavesand tides, lake or pond ther mal dif fer ences; and from the in ter -nal heat of the earth, in clud ing noc tur nal ther mal ex changes.

RE PAIR. The re con struc tion or re newal of any part of an ex ist -ing build ing for the pur pose of its main te nance.

RES I DEN TIAL BUILDING, GROUP R-2. Res i den tial oc -cu pan cies con tain ing more than two dwell ing units where theoc cu pants are pri mar ily per ma nent in na ture such as apart menthouses, board ing houses (not tran sient), con vents, mon as ter ies, rec to ries, fra ter ni ties and so ror i ties, dor mi to ries and room inghouses. For the pur pose of this code, ref er ence to Group R-2oc cu pan cies shall re fer to build ings that are three sto ries or lessin height above grade.

RES I DEN TIAL BUILDING, GROUP R-4. Res i den tial oc -cu pan cies shall in clude build ings ar ranged for oc cu pan cies asRes i den tial Care/As sisted Liv ing Fa cil ities in clud ing morethan five but not more than 16 oc cu pants, ex clud ing staff. Forthe pur pose of this code, ref er ence to Group R-4 oc cu pan ciesshall re fer to build ings which are three sto ries or less in heightabove grade.

ROOF AS SEM BLY. A roof as sem bly shall be con sid ered asall roof/ceil ing com po nents of the build ing en ve lope throughwhich heat flows, thus cre at ing a build ing trans mis sion heatloss or gain, where such as sem bly is ex posed to out door air anden closes con di tioned space.

The gross area of a roof as sem bly con sists of the to tal in te rior sur face of all roof/ceil ing com po nents, in clud ing opaque sur -faces, dor mer and bay win dow roofs, trey ceil ings, over headpor tions of an in te rior stair way to an un con di tioned at tic, doorsand hatches, glaz ing and sky lights ex posed to con di tionedspace, that are hor i zon tal or sloped at an an gle less than 60 de -grees (1.1 rad) from the hor i zon tal (see “Ex te rior wall”). A roof as sem bly, or por tions thereof, hav ing a slope of 60 de grees (1.1rad) or greater from hor i zon tal shall be con sid ered in the grossarea of ex te rior walls and thereby ex cluded from con sid er ationin the roof as sem bly. Sky light shaft walls 12 inches (305 mm)in depth or greater (as mea sured from the ceil ing plane to theroof deck) shall be con sid ered in the gross area of ex te rior walls and are thereby ex cluded from con sid er ation in the roof as sem -bly.

ROOM AIR CON DI TIONER. An en cased as sem bly de -signed as a unit for mount ing in a win dow or through a wall, oras a con sole. It is de signed pri mar ily to pro vide free de liv ery ofcon di tioned air to an en closed space, room or zone. It in cludes a prime source of re frig er a tion for cool ing and dehumidificationand means for cir cu lat ing and clean ing air, and shall be per mit -ted to also in clude means for ven ti lat ing and heat ing.

SASH CRACK. The sum of all per im e ters of all win dowsashes, based on over all di men sions of such parts, ex pressed infeet. If a por tion of one sash per im e ter over laps a por tion of an -other sash per im e ter, the over lap ping por tions are only countedonce.

SCREW LAMP HOLDERS. A lamp base that re quires ascrew-in-type lamp such as an in can des cent or tung sten-halo -gen bulb.

SEA SONAL EN ERGY EFFICIENCY RA TIO (SEER).The to tal cool ing out put of an air con di tioner dur ing its nor malan nual us age pe riod for cool ing, in Btu/h (W), di vided by theto tal elec tric en ergy in put dur ing the same pe riod, inwatt-hours, as de ter mined by DOE 10 CFR Part 430, SubpartB, Test Pro ce dures.

SER VICE SYS TEMS. All en ergy-us ing sys tems in a build ing that are op er ated to pro vide ser vices for the oc cu pants or pro -cesses housed therein, in clud ing HVAC, ser vice wa ter heat ing,il lu mi na tion, trans por ta tion, cook ing or food prep a ra tion, laun -der ing and sim i lar func tions.

SER VICE WA TER HEATING. Sup ply of hot wa ter for pur -poses other than com fort heat ing.

DEFINITIONS


SIM U LA TION TOOL. An ap proved soft ware pro gram orcal cu la tion-based meth od ol ogy that pro jects the hour-by-hourloads and an nual en ergy use of a build ing.

SKY LIGHT. Glazing that is hor i zon tal or sloped at an an gleless than 60 de grees (1.1 rad) from the hor i zon tal (see “Glazingarea”).

SLAB-ON-GRADE FLOOR IN SU LA TION. In su la tionaround the per im e ter of the floor slab or its sup port ing foun da -tion when the top edge of the floor per im e ter slab is above thefin ished grade or 12 inches (305 mm) or less be low the fin ishedgrade.

SOLAR EN ERGY SOURCE. Source of nat u ral daylightingand of ther mal, chem i cal or elec tri cal en ergy de rived di rectlyfrom con ver sion of in ci dent so lar ra di a tion.

STAN DARD DESIGN. A ver sion of the proposed de sign thatmeets the min i mum re quire ments of this code and is used to de -ter mine the max i mum an nual en ergy cost re quire ment for com -pli ance based on to tal build ing per for mance.

STAN DARD TRUSS. Any con struc tion that does not per mitthe roof/ceil ing in su la tion to achieve the re quired R-value overthe ex te rior walls.

SUN ROOM AD DI TION. A one-story struc ture added to anex ist ing dwell ing with a glaz ing area in ex cess of 40 per cent ofthe gross area of the struc ture’s ex te rior walls and roof.

SYS TEM. A com bi na tion of cen tral or ter mi nal equip ment orcom po nents or con trols, ac ces so ries, in ter con nect ing means,and ter mi nal de vices by which en ergy is trans formed so as toper form a spe cific func tion, such as HVAC, ser vice wa ter heat -ing or il lu mi na tion.

THER MAL CON DUC TANCE. Time rate of heat flowthrough a body (fre quently per unit area) from one of its bound -ing sur faces to the other for a unit tem per a ture dif fer ence be -tween the two sur faces, un der s teady con di t ions(Btu/h ⋅ ft2 ⋅ °F) [W/(m2 ⋅ K)].

THER MAL ISO LA TION. A sep a ra tion of con di tionedspaces, be tween a sun room ad di tion and a dwell ing unit, con -sist ing of ex ist ing or new wall(s), doors and/or win dows. Newwall(s), doors and/or win dows shall meet the pre scrip tive en ve -lope com po nent cri te ria in Ta ble 502.2.5.

THER MAL RE SIS TANCE (R). The re cip ro cal of ther malcon duc tance (h ⋅ ft2 ⋅ °F/Btu) [(m2 ⋅ K)/W].

THER MAL RE SIS TANCE, OVER ALL(Ro). The re cip ro -cal of over al l ther mal con duc tance(h ⋅ ft2 ⋅ °F/Btu)[(m2 ⋅ K)/W]. The over all ther mal re sis tance of the gross area or in di vid ual com po nent of the ex te rior build ingen ve lope (such as roof/ceil ing, ex te rior wall, floor, crawl spacewall, foun da tion, win dow, sky light, door, opaque wall, etc.),which in cludes the area weighted R-val ues of the spe cific com -po nent as sem blies (such as air film, in su la tion, dry wall, fram -ing, glaz ing, etc.).

THER MAL TRANS MIT TANCE (U). The co ef fi cient ofheat trans mis sion (air to air). It is the time rate of heat flow perunit area and unit tem per a ture dif fer ence be tween thewarm-side and cold-side air films (Btu/h ⋅ ft2 ⋅ °F)[W/(m2 ⋅ K)]. The U-fac tor ap plies to com bi na tions of dif fer ent ma te ri als used in se ries along the heat flow path, sin gle ma te ri -

als that com prise a build ing sec tion, cav ity air spaces andsur face air films on both sides of a build ing el e ment.

THER MAL TRANS MIT TANCE, OVER ALL (Uo). Theover all (av er age) heat trans mis sion of a gross area of the ex te -rior build ing en ve lope (Btu/h ⋅ ft2 ⋅ °F) [W/(m2 ⋅ K)]. TheUo-fac tor ap plies to the com bined ef fect of the time rate of heatflow through the var i ous par al lel paths, such as win dows, doors and opaque con struc tion ar eas, com pris ing the gross area ofone or more ex te rior build ing com po nents, such as walls, floors or roof/ceil ings.

THER MO STAT. An au to matic con trol de vice ac tu ated bytem per a ture and de signed to be re spon sive to tem per a ture.

TOWN HOUSE. See “Mul ti ple sin gle-fam ily dwell ing.”

UNI TARY COOLING AND HEATING EQUIP MENT.One or more fac tory-made as sem blies which in clude an evap o -ra tor or cool ing coil, a com pres sor and con denser com bi na tion, and which shall be per mit ted to in clude a heat ing func tion aswell. When heat ing and cool ing equip ment is pro vided in morethan one as sem bly, the sep a rate as sem blies shall be de signed tobe used to gether.

UNI TARY HEAT PUMP. One or more fac tory-made as sem -blies which in clude an in door con di tion ing coil, com pres sor(s)and out door coil or re frig er ant-to-wa ter heat exchanger, in -clud ing means to pro vide both heat ing and cool ing func tions.When heat pump equip ment is pro vided in more than one as -sem bly, the sep a rate as sem blies shall be de signed to be used to -gether.

VEN TI LA TION. The pro cess of sup ply ing or re mov ing air by nat u ral or me chan i cal means to or from any space. Such airshall be per mit ted to be con di tioned or un con di tioned.

VEN TI LA TION AIR. That por tion of sup ply air which co mes from out side (out doors) plus any recirculated air that has beentreated to main tain the de sired qual ity of air within a des ig nated space.

WA TER HEATER, IN STAN TA NEOUS. A wa ter heaterwith an in put rat ing of at least 4,000 Btu/h per gal lon (310 W/L) stored wa ter and a stor age ca pac ity of less than 10 gal lons (38L).

WA TER HEATER, STOR AGE. A wa ter heater with an in putrat ing less than 4,000 Btu/h per gal lon (310 W/L) of stored wa -ter or stor age ca pac ity of at least 10 gal lons (38 L).

WIN DOW PRO JEC TION FACTOR. A mea sure of the por -tion of glaz ing that is shaded by an eave or over hang.

ZONE. A space or group of spaces within a build ing with heat -ing or cool ing re quire ments, or both, suf fi ciently sim i lar so that com fort con di tions can be main tained through out by a sin glecon trol ling de vice.


DEFINITIONS

CHAPTER 3

DESIGN CONDITIONS

SECTION 301GENERAL

301.1 Design cri te ria. The cri te ria of this chap ter es tab lish thede sign con di tions for use with Chap ters 4, 5, 6 and 8.

SECTION 302THERMAL DESIGN PARAMETERS

302.1 Ex te rior de sign con di tions. The fol low ing de sign pa -ram e ters in Ta ble 302.1 shall be used for cal cu la tions re quiredun der this code.

TABLE 302.1EXTERIOR DESIGN CONDITIONS

CONDITION VALUE

Wintera, Design Dry-bulb (°F)

Summera, Design Dry-bulb (°F)

Summera, Design Wet-bulb (°F)

Degree days heatingb

Degree days coolingb

Climate zonec

For SI: °C = [(°F)-32]/1.8. a. The out door de sign tem per a ture shall be se lected from the col umns of 971/2

per cent val ues for win ter and 21/2 per cent val ues for sum mer from ta bles inthe ASHRAE Fun da men tals Hand book. Ad just ments shall be per mit ted tore flect lo cal cli mates which dif fer from the tab u lated tem per a tures, or lo calweather ex pe ri ence de ter mined by the code of fi cial.

b. The de gree days heat ing (base 65°F) and cool ing (base 65°F) shall be se -lected from NOAA “An nual De gree Days to Se lected Bases Derived fromthe 1961-1990 Nor mals,” data avail able from ad ja cent mil i tary in stal la tions, or other source of lo cal weather data ac cept able to the code of fi cial.

c. The cli mate zone shall be se lected from the ap pli ca ble map pro vided in Fig -ures 902.1(1) through 902.1(51) in Chap ter 9 of this code.


á

CHAPTER 4

RESIDENTIAL BUILDING DESIGN BY SYSTEMS ANALYSISAND DESIGN OF BUILDINGS UTILIZING

RENEWABLE ENERGY SOURCES

SECTION 401GENERAL

401.1 Scope. This chap ter es tab lishes de sign cri te ria in termsof to tal en ergy use by a res i den tial build ing, in clud ing all of itssys tems.

SECTION 402SYSTEMS ANALYSIS

402.1 Anal y sis pro ce dure. Ex cept as ex plic itly spec i fied bythis chap ter, the stan dard de sign home shall be con fig ured andsim u lated us ing iden ti cal meth ods and tech niques as are used inthe con fig u ra tion and sim u la tion of the pro posed de sign home.

402.2 En ergy anal y sis. Com pli ance with this chap ter will re -quire an anal y sis of the an nual en ergy us age, here in af ter calledan “an nual en ergy anal y sis.”

Ex cep tion: Chap ters 5 and 6 es tab lish cri te ria for dif fer enten ergy-con sum ing and en clo sure el e ments of the build ingwhich, if fol lowed, will elim i nate the re quire ment for an an -nual en ergy anal y sis while meet ing the in tent of this code.

402.2.1 Stan dard de sign. A build ing de signed in ac cor -dance with this chap ter will be deemed as com ply ing withthis code if the cal cu lated an nual en ergy con sump tion is notgreater than a sim i lar build ing (de fined as a “stan dard de -sign”) whose en clo sure el e ments and en ergy-con sum ingsys tems are de signed in ac cor dance with Chap ter 5. Spe cific build ing en ve lope el e ments of the stan dard de sign shallcom ply with Sec tions 402.2.1.1 through 402.2.1.4.

402.2.1.1 Ex te rior walls. The ex te rior wall as sem blyU-Fac tors for the stan dard de sign shall be se lected by cli -mate in ac cor dance with Ta ble 402.2.1.1.

402.2.1.2 Fen es tra tion U-fac tor. The fen es tra tion sys -tem U-Fac tor used in the stan dard de sign shall be se -lected by cli mate in ac cor dance with Ta ble 402.2.1.2.

402.2.1.3 Win dow area. The win dow area of the stan -dard de sign, in clu sive of the framed sash and glaz ingarea, shall be equal to 18 per cent of the con di tioned floorarea of the pro posed de sign.

402.2.1.4 Sky lights. Sky lights and other nonvertical roof glaz ing el e ments shall not be in cluded in the stan dard de -sign, and ceil ing U-fac tors used in the stan dard de signshall not in clude such el e ments in their com pu ta tion.

402.2.2 Pro posed de sign. For a pro posed al ter native build -ing de sign (de fined as a “pro posed de sign”) to be con sid ered sim i lar to a “stan dard de sign,” it shall uti lize the samenonrenewable en ergy source(s) for the same func tions andhave equal con di tioned floor area and the same ra tio of ther -

mal en ve lope area to floor area (i.e., the same ge om e try),ex te rior de sign con di tions, oc cu pancy, cli mate data, and us -age op er a tional sched ule as the stan dard de sign. Where anen ergy end use (such as space heat ing or do mes tic wa ter) isto be pro vided en tirely from re new able en ergy sources in apro posed de sign, the stan dard de sign shall as sume an equip -ment type us ing a nonre new able en ergy source com mon tothat re gion for that end use as ap proved by the code of fi cial.

402.2.2.1 Ori en ta tion for groups of build ings. Theworst pos si ble ori en ta tion of the pro posed de sign, interms of an nual en ergy use, con sid er ing north, north east,east, south east, south, south west, west and north west ori -en ta tions, shall be used to rep re sent group of oth er wiseiden ti cal de signs.

TABLE 402.2.1.1STANDARD DESIGN WALL ASSEMBLY U-FACTORS (Uw)

HEATING DEGREE DAYSa Uw (air to air)b

≥ 13,000 0.038

9,000 - 12,999 0.046

6,500 - 8,999 0.052

4,500 - 6,499 0.058

3,500 - 4,499 0.064

2,600 - 3,499 0.076

< 2,600 0.085

a. From Ta ble 302.1.b. In clud ing fram ing ef fects.

TABLE 402.2.1.2STANDARD DESIGN FENESTRATION SYSTEM

U-FACTORS (Ug or Uf)

HEATING DEGREE DAYSaUg FOR SECTION 502.2.1.1 AND Uf FOR

SECTION 502.2.3.1 (air to air)b

≥ 13,000 0.25

9,000 - 12,999 0.26

6,500 - 8,999 0.28

4,500 - 6,499 0.30

3,500 - 4,499 0.41

2,600 - 3,499 0.44

700 - 2,599 0.47

< 700 0.74

a. From Ta ble 302.1.b. En tire as sem bly, in clud ing sash.


402.2.3 In put val ues for res i den tial build ings. The in putval ues in Sec tions 402.2.3.1 through 402.2.3.11 shall beused in cal cu lat ing an nual en ergy per for mance. The re -quire ments of this sec tion spe cif i cally in di cate which vari -ables shall re main con stant be tween the stan dard de sign and pro posed de sign cal cu la tions. The stan dard de sign shall be a base ver sion of the de sign that di rectly com plies with thepro vi sions of this code. The pro posed build ing shall be per -mit ted to uti lize a de sign meth od ol ogy that is dem on strated,through cal cu la tions sat is fac tory to the code of fi cial, to have equal or lower an nual en ergy use than the stan dard de sign.

402.2.3.1 Glazing sys tems. The in put val ues in Sec tions402.2.3.1.1 through 402.2.3.1.4, spe cific to glaz ing sys -tems, shall be used in cal cu lat ing an nual en ergy per for -mance.

402.2.3.1.1 Ori en ta tion, stan dard de sign. As a min -i mum, equal ar eas on north, east, south and west ex -po sures shall be as sumed.

402.2.3.1.2 Ex te rior shad ing, stan dard de sign.Glazing ar eas in the stan dard de sign shall not be pro -vided with ex te rior shad ing such as roof over hangs.En ergy per for mance im pacts of added ex te rior shad -ing for glaz ing ar eas which are ac counted for in thepro posed de sign for a spe cific build ing shall be per -mit ted, pro vided that the code of fi cial ap proves theac tual in stal la tion of such sys tems.

402.2.3.1.3 Fen es tra tion sys tem so lar heat gain co -ef fi cient, stan dard de sign. The fen es tra tion sys temso lar heat gain co ef fi cient (SHGC), in clu sive offramed sash and glaz ing area, of the glaz ing sys temsin the stan dard de sign shall be 0.40 for HDD < 3,500and 0.68 for HDD ≥ 3,500 dur ing pe ri ods of me chan i -cal heat ing and cool ing op er a tion. These fen es tra tionsys tem SHGC val ues shall be mul ti plied to getherwith (added in se ries to) the in te rior shad ing val ues asspec i fied in Sec tion 402.2.3.1.4 to ar rive at an over allso lar heat gain co ef fi cient for the in stalled glaz ingsys tem.

Where the SHGC char ac ter is tics of the pro posedfen es tra tion prod ucts are not known, the de faultSHGC val ues given in Ta ble 102.5.2(3) shall be usedfor the pro posed de sign.

402.2.3.1.4 In te rior shad ing, stan dard de sign andpro posed de sign. The same sched ule of in te riorshad ing val ues, ex pressed as the frac tion of the so larheat gain ad mit ted by the fen es tra tion sys tem that isalso ad mit ted by the in te rior shad ing, shall be as -sumed for the stan dard and pro posed de signs.

The val ues used for in te rior shad ing shall be 0.70 in sum mer, and 0.90 in win ter.

402.2.3.2 Heat stor age (ther mal mass). The fol low ingin put val ues, spe cific to heat stor age (ther mal mass),shall be used in cal cu lat ing an nual en ergy per for mance:

In ter nal mass: 8 pounds per square foot (39 kg/m2)

Struc tural mass: 3.5 pounds per square foot (17 kg/m2)

402.2.3.3 Build ing ther mal en ve lope — sur face ar easand vol ume. The in put val ues in Sec tions 402.2.3.3.1through 402.2.3.3.4, spe cific to build ing ther mal en ve -lope sur face ar eas, shall be used in cal cu lat ing an nual en -ergy per for mance.

402.2.3.3.1 Floors, walls, ceil ing. The stan dard andpro posed de signs shall have equal ar eas.

402.2.3.3.2 Foun da tion and floor type. The foun da -tion and floor type for both the stan dard and pro posedde signs shall be equal.

402.2.3.3.3 Doors. The opaque door area of the stan -dard de sign shall equal that of the pro posed de signand shall have a U-fac tor of 0.2 Btu/hr ⋅ ft2 ⋅ EF [1.14W/(m2 ⋅ Κ)].402.2.3.3.4 Build ing vol ume. The vol ume of both the stan dard and pro posed de signs shall be equal.

402.2.3.4 Heating and cool ing con trols. Un less oth er -wise spec i fied by lo cal codes, heat ing and cool ing ther -mo stats shall com ply with Ta ble 402.2.3.4 for thestan dard and pro posed de signs. The in put val ues spe cificto heat ing and cool ing con trols, shall be used in cal cu lat -ing an nual en ergy per for mance.

TABLE 402.2.3.4HEATING AND COOLING CONTROLS

PARAMETERSTANDARD

DESIGN VALUEproposed DESIGN

VALUE

Heating 68EF 68EF

Cooling 78EF 78EF

Setback/setup 5EF Maximum of 5EF

Setback/setup duration 6 hours per dayMaximum of 6hours per day

Number of setback/setup periods per unita 1 Maximum of 1

Maximum number of zones per unita 2 2

Number of thermostats per zone 1 1

For SI: EC = [(EF) -32]/1.8a. Units = Num ber of dwelling units in stan dard and pro posed de signs.

402.2.3.5 In ter nal heat gains. Equation 4-1 shall beused to de ter mine the in put val ues, spe cific to in ter nalheat gains, that shall be used in both the stan dard de signand the pro posed de sign in cal cu lat ing an nual en ergyper for mance:

I-Gain = 17,900 + (23.8 ⋅ CFA) + (4140 ⋅ BR)

(Equa tion 4-1)

where:

I-Gain = In ter nal gains in Btu/day (kWh/day) per dwell ing unit.

CFA = Con di tioned floor area.

BR = Num ber of bed rooms.

RESIDENTIAL BUILDING DESIGN


á

á

á

402.2.3.6 Do mes tic hot wa ter (cal cu late, then con -stants). The fol low ing in put val ues, spe cific to do mes tichot wa ter, shall be used in cal cu lat ing an nual en ergy per -for mance.

Tem per a ture set point 120°F (49°C)

Daily hot wa ter Gal lons = (30 ⋅ a) + (10 ⋅ b)con sump tion

where:

a = Num ber of dwelling units in stan dard andpro posed de signs.

b = Num ber of bed rooms in each dwelling unit.

402.2.3.7 Site weather data (con stants). The typ i calme te o ro log i cal year (TMY2), or its “er satz” equiv a lent,from the Na tional Oce anic and At mo spheric Ad min is -tra tion (NOAA), or an ap proved equiv a lent, for the clos -est avail able lo ca tion shall be used.

402.2.3.8 Forced-air dis tri bu tion sys tem loss fac tors(DLF). The heat ing and cool ing sys tem ef fi ciency shallbe pro por tion ately ad justed for those por tions of theductwork lo cated out side or in side the con di tioned spaceus ing the val ues shown be low:

System Operating Mode Duct Location

Outside Inside

HeatingCooling

0.800.80

1.001.00

Note: Ducts lo cated in a space that con tains a pos i tiveheat ing sup ply or cool ing sup ply, or both, shall becon sid ered in side the build ing en ve lope.

Im pacts from im proved dis tri bu tion loss fac tors(DLF) shall be ac counted for in the pro posed de sign onlyif the en tire air dis tri bu tion sys tem is spec i fied on thecon struc tion doc u ments to be sub stan tially leak free, andis tested af ter in stal la tion to en sure that the in stal la tion issub stan tially leak free.“Sub stan tially leak free” shall bede fined as the con di tion un der which the en tire air dis tri -bu tion sys tem (in clud ing the air han dler cab i net) is ca pa -ble of main tain ing a 0.1-inch w.g. (25 Pa) in ter nalpres sure at 5 per cent or less of the air han dler’s rated air -flow when the re turn grilles and sup ply reg is ters aresealed off. This test shall be con ducted us ing meth odsand pro ce dures as spec i fied in Sec tion 3 of the SMACNA HVAC Air Duct Leak age Test Man ual, or by us ing other,sim i lar pres sur iza tion test meth ods and as ap proved bythe code of fi cial.

Where test re sults show that the en tire dis tri bu tion sys -tem is sub stan tially leak free, then sea sonal DLFs shallbe cal cu lated sep a rately for heat ing and cool ing modesus ing en gi neer ing meth ods ca pa ble of con sid er ing thenet sea sonal cool ing en ergy heat gain im pacts and the netsea sonal heat ing en ergy heat loss im pacts that re sultfrom the por tion of the ther mal air dis tri bu tion sys temthat is lo cated out side the con di tioned space. Once these

heat ing and cool ing sea son “dis tri bu tion sys tem en ergyim pacts” are known, then heat ing and cool ing modeDLFs for the pro posed de sign shall be cal cu lated us ingEqua tions 4-2 and 4-3:

To tal Sea sonal En ergy = Sea sonal Build ing En ergy +Dis tri bu tion Sys tem En ergy Im pacts

(Equa tion 4-2)

DLF = Sea sonal Build ing En ergy/To tal Sea sonal En -ergy

(Equa tion 4-3)

Once the DLFs for the heat ing and cool ing sea sons areknown, the to tal “ad justed sys tem ef fi ciency” is cal cu -lated us ing Equa tion 4-4:

Ad justed Sys tem Ef fi ciency = (Equip mentEf fi ciency ⋅ DLF ⋅ Per cent of Duct Out side) + (Equip -ment Ef fi ciency ⋅ DLF ⋅ Per cent of Duct In side)

(Equa tion 4-4)

Equation 4-4 shall be used to de velop ad justed sys temef fi ciency for each heat ing and cool ing sys tem in cludedin the stan dard de sign. Where a sin gle sys tem pro videsboth heat ing and cool ing, ef fi cien cies shall be cal cu latedsep a rately for heat ing and cool ing modes.

402.2.3.9 Air in fil tra tion. An nual av er age air changesper hour (ACH) for the stan dard de sign shall be de ter -mined us ing the fol low ing equa tion:

ACH = Nor mal ized Leak age × Weather Fac tor

(Equa tion 4-5)

where:

Nor mal ized leak age = 0.57

and

Weather fac tor is de ter mined in ac cor dance with theweather fac tors (W) given by ASHRAE 136, as takenfrom the weather sta tion near est the build ing site.

Where the pro posed de sign takes credit for re ducedACH lev els, doc u men ta tion of mea sures pro vid ing suchre duc tions, and re sults of a post-con struc tionblower-door test shall be pro vided to the code of fi cial us -ing ASTM E 779. No en ergy credit shall be granted forACH lev els be low 0.35.

402.2.3.10 Foun da tion walls. When per form ing an nualen ergy anal y ses for build ings with in su lated base ment orcrawl space walls, the de sign U-fac tors taken from Ta ble502.2 for these walls of the stan dard build ing shall beper mit ted to be de creased by ac count ing for the R-val uesof the ad ja cent soil, pro vided that the foun da tion wallU-fac tor of the pro posed build ing also ac counts for theR-value of the ad ja cent soil.

402.2.3.11 Heating and cool ing sys tem equip ment ef -fi ciency, stan dard de sign. The ef fi ciency of the heat ingand cool ing equip ment shall meet, but not ex ceed themin i mum ef fi ciency re quire ment in Sec tion 503.2.Where the pro posed de sign uti lizes an elec tric re sis tance



space heat ing sys tem as the pri mary heat ing source, thestan dard de sign shall uti lize an air-cooled heat pump that meets but does not ex ceed the min i mum ef fi ciency re -quire ments in Sec tion 503.2.

Ex cep tion: Zonal elec tric-re sis tance space heat ingequip ment in build ings in Cli mate Zones 1a through4b as in di cated in Ta ble 302.1

402.3 De sign. The stan dard de sign, con form ing to the cri te riaof Chap ter 5 and the pro posed design, shall be de signed on acom mon ba sis as spec i fied in Sec tions 402.3.1 through402.3.3.

402.3.1 Units of en ergy. The com par i son shall be ex pressed as Btu in put per square foot (W/m2) of gross floor area peryear at the build ing site.

402.3.2 Equiv a lent en ergy units. If the pro posed de sign re -sults in an in crease in con sump tion of one en ergy source and a de crease in an other en ergy source, even though sim i larsources are used for sim i lar pur poses, the dif fer ence in eachen ergy source shall be con verted to equiv a lent en ergy unitsfor pur poses of com par ing the to tal en ergy used.

402.3.3 Site en ergy. The dif fer ent en ergy sources shall becom pared on the ba sis of en ergy use at the site where: 1 kWh =3,413 Btu.

402.4 Anal y sis pro ce dure. The anal y sis of the an nual en ergyus age of the stan dard and the pro posed al ter na tive build ing andsys tem de signs shall meet the cri te ria spec i fied in Sec tions402.4.1 and 402.4.2.

402.4.1 Load cal cu la tions. The build ing heat ing and cool -ing load cal cu la tion pro ce dures used for an nual en ergy con -sump tion anal y sis shall be de tailed to per mit the eval u a tionof ef fect of fac tors spec i fied in Sec tion 402.4.

402.4.2 Sim u la tion de tails. The cal cu la tion pro ce dure used to sim u late the op er a tion of the build ing and its ser vice sys -tems through a full-year op er at ing pe riod shall be de tailed to per mit the eval u a tion of the ef fect of sys tem de sign, cli ma tic fac tors, op er a tional char ac ter is tics, and me chan i cal equip -ment on an nual en ergy us age. Man u fac turer’s data or com -pa ra ble field test data shall be used when avail able in thesim u la tion of sys tems and equip ment. The cal cu la tion pro -ce dure shall be based on 8,760 hours of op er a tion of thebuild ing and its ser vice sys tems and shall uti lize the de signmeth ods spec i fied in the ASHRAE Fun da men tals Hand -book.

402.5 Cal cu la tion pro ce dure. The cal cu la tion pro ce dure shall in clude the items spec i fied in Sec tions 402.5.1 through402.5.7.

402.5.1 De sign re quire ments. En vi ron men tal re quire -ments as re quired in Chap ter 3.

402.5.2 Cli ma tic data. Co in ci dent hourly data for tem per a -tures, so lar ra di a tion, wind and hu mid ity of typ i cal days inthe year rep re sent ing sea sonal vari a tion.

402.5.3 Build ing data. Ori en ta tion, size, shape, fram ing,mass, air, mois ture and heat trans fer char ac ter is tics.

402.5.4 Op er a tional char ac ter is tics. Tem per a ture, hu -mid ity, ven ti la tion, il lu mi na tion and con trol mode for oc cu -pied and un oc cu pied hours.

402.5.5 Me chan i cal equip ment. De sign ca pac ity andpart-load pro file.

402.5.6 Build ing loads. In ter nal heat gen er a tion, light ing,equip ment and num ber of peo ple dur ing oc cu pied and un oc -cu pied pe ri ods.

402.5.7 Use of ap proved cal cu la tion tool. The same cal cu -la tion tool shall be used to es ti mate the an nual en ergy us agefor space heat ing and cool ing of the stan dard de sign and thepro posed de sign. The cal cu la tion tool shall be ap proved bythe code of fi cial.

402.6 Doc u men ta tion. Pro posed al ter na tive de signs, sub mit -ted as re quests for ex cep tion to the stan dard de sign cri te ria,shall be ac com pa nied by an en ergy anal y sis com par i son re port. The re port shall pro vide tech ni cal de tail on the stan dard andpro posed de signs and on the data used in and re sult ing from thecom par a tive anal y sis to ver ify that both the anal y sis and the de -signs meet the cri te ria of Chap ter 4.

Ex cep tion: Pro posed al ter na tive de signs for res i den tialbuild ings hav ing a con di tioned floor area of 5,000 squarefeet (464 m2) or less are ex empted from the hourly anal y sisde scribed in Sec tions 402.4 and 402.5. How ever, a com par i -son of en ergy con sump tion us ing cor re la tion meth ods based on full-year hourly sim u la tion anal y sis or other en gi neer ingmeth ods that are ca pa ble of es ti mat ing the an nual heat ing,cool ing and hot wa ter use be tween the pro posed al ter na tivede sign and the stan dard de sign shall be pro vided.



CHAPTER 5

RESIDENTIAL BUILDING DESIGN BY COMPONENTPERFORMANCE APPROACH

SECTION 501GENERAL

501.1 Scope. Res i den tial build ings or por tions thereof that en -close con di tioned space shall be con structed to meet the re -quire ments of this chap ter.

SECTION 502BUILDING ENVELOPE REQUIREMENTS

502.1 Gen eral re quire ments. The build ing en ve lope shallcom ply with the ap pli ca ble pro vi sions of Sec tions 502.1.1through 502.1.5 re gard less of the means of dem on strat ing en -ve lope com pli ance as set forth in Sec tion 502.2.

502.1.1 Mois ture con trol. The de sign shall not cre ate con -di tions of ac cel er ated de te ri o ra tion from mois turecondensa tion. Frame walls, floors and ceil ings not ven ti -lated to al low mois ture to es cape shall be pro vided with anap proved va por re tarder hav ing a permeance rat ing of 1perm (5.7 x 10 –11 kg/Pa . s . m2) or less, when tested in ac cor -dance with the dessicant method us ing Pro ce dure A ofASTM E 96. The va por re tarder shall be in stalled on thewarm-in-win ter side of the ther mal in su la tion.

Ex cep tions:

1. In con struc tion where mois ture or its freez ing willnot dam age the ma te ri als.

2. Where the county in which the build ing is be ingcon structed is con sid ered a hot and hu mid cli matearea and iden ti fied as such in Fig ures 902.1(1)through 902.1(51) in Chap ter 9 of this code.

3. Where other ap proved means to avoid con den sa -tion in un ven ti lated framed wall, floor, roof andceil ing cav i ties are pro vided.

502.1.2 Ma sonry ve neer. When in su la tion is placed on theex te rior of a foun da tion sup port ing a ma sonry ve neer ex te -rior, the hor i zon tal foun da tion sur face sup port ing the ve neer is not re quired to be in su lated to sat isfy any foun da tion in su -la tion re quire ment.

502.1.3 Re cessed light ing fix tures. When in stalled in thebuild ing en ve lope, re cessed light ing fix tures shall meet oneof the fol low ing re quire ments:

1. Type IC rated, man u fac tured with no pen e tra tions be -tween the in side of the re cessed fix ture and ceil ingcav ity and sealed or gasketed to pre vent air leak ageinto the un con di tioned space.

2. Type IC or non-IC rated, in stalled in side a sealed boxcon structed from a min i mum 0.5-inch-thick (12.7mm) gyp sum wall board or con structed from a pre -

formed poly meric va por bar rier, or other air-tight as -sem bly man u fac tured for this pur pose, while main -tain ing re quired clear ances of not less than 0.5 inch(12.7 mm) from com bus ti ble ma te rial and not lessthan 3 inches (76 mm) from in su la tion ma te rial.

3. Type IC rated, in ac cor dance with ASTM E 283 ad -mit ting no more than 2.0 cu bic feet per min ute (cfm)(0.944 L/s) of air move ment from the con di tionedspace to the ceil ing cav ity. The light ing fix ture shallbe tested at 1.57 pounds per square inch (psi) (75 Pa)pres sure dif fer ence and shall be la beled.

502.1.4 Air leak age. Pro vi sions for air leak age shall be inac cor dance with Sec tions 502.1.4.1 and 502.1.4.2.

502.1.4.1 Win dow and door as sem blies. Win dow anddoor as sem blies in stalled in the build ing en ve lope shallcom ply with the max i mum al low able air leak age rates inTa ble 502.1.4.1.

Ex cep tion: Site-con structed win dows and doorssealed in ac cor dance with Sec tion 502.1.4.2.

TABLE 502.1.4.1ALLOWABLE AIR LEAKAGE RATESa, b

WINDOWS(cfm per square foot of

window area)

DOORS(cfm per square foot of door area)

Sliding Swinging

0.3b, d 0.3d 0.5c, d

For SI: 1 cfm/ft2 = 5 L/S ⋅ m2.a. When tested in ac cor dance with ASTM E 283.b. See AAMA/WDMA 101/I.S.2.c. Re quire ment based on as sem bly area.d. See NFRC 400.

502.1.4.2 Caulking and seal ants. Ex te rior joints, seams or pen e tra tions in the build ing en ve lope, that are sourcesof air leak age, shall be sealed with du ra ble caulk ing ma -te ri als, closed with gasketing sys tems, taped or cov eredwith mois ture va por-per me able housewrap. Sealing ma -te ri als span ning joints be tween dis sim i lar con struc tionma te ri als shall al low for dif fer en tial ex pan sion and con -trac tion of the con struc tion ma te ri als.

This in cludes seal ing around tubs and show ers, at theat tic and crawl space pan els, at re cessed lights andaround all plumb ing and elec tri cal pen e tra tions. Theseare open ings lo cated in the build ing en ve lope be tweencon di tioned space and un con di tioned space or be tweenthe con di tioned space and the out side.

502.1.5 Fen es tra tion so lar heat gain co ef fi cient. In lo ca -tions with heat ing de gree days (HDD) less than 3,500, the


com bined so lar heat gain co ef fi cient (the area-weighted av -er age) of all glazed fen es tra tion prod ucts (in clud ing the ef -fects of any per ma nent ex te rior so lar shad ing de vices) in the build ing shall not ex ceed 0.4.

502.2 Heating and cool ing cri te ria. The build ing en ve lopeshall meet the pro vi sions of Ta ble 502.2. Com pli ance shall bedem on strated in ac cor dance with Sec tion 502.2.1, 502.2.2,502.2.3, 502.2.4 or 502.2.5, as ap pli ca ble.

En ergy mea sure tradeoffs uti liz ing equip ment ex ceed ing the re quire ments of Sec tion 503, 504 or 505 shall only use the com -pli ance methods de scribed in Chap ter 4.

TABLE 502.2HEATING AND COOLING CRITERIAa

TYPE A-1RESIDENTIAL

BUILDINGS

TYPE-2RESIDENTIAL

BUILDINGS

ELEMENT MODE Uo Uo

WallsHeating or

cooling— —

Roof/ceilingHeating or

cooling— —

Floors over unheatedspaces

Heating orcooling

— —

Heated slab ongradeb,f Heating R-value = R-value =

Unheated slab ongradec,d,f Heating R-value = R-value =

Basement walle,f Heating orcooling

U-factor = U-factor =

Crawl space walle,f Heating orcooling

U-factor = U-factor =

For SI: 1 Btu/h ⋅ ft2 ⋅ °F = 5.678 W/(m2 ⋅ K), °C = [(°F)-32]/1.8.a. Values shall be de ter mined by us ing the graphs [Fig ures 502.2(1),

502.2(2), 502.2(3), 502.2(4), 502.2(5) and 502.2(6)] us ing HDD as spec i -fied in Sec tion 302.

b. There are no in su la tion re quire ments for heated slabs in lo ca tions hav ingless than 500 HDD.

c. There are no in su la tion re quire ments for un heated slabs in lo ca tions hav -ing less than 2,500 HDD.

d. Slab edge in su la tion is not re quired for un heated slabs in ar eas of veryheavy ter mite in fes ta tion prob a bil ity in ac cor dance with Sec tion502.2.1.4, and as shown in Fig ure 502.2(7).

e. Base ment and crawl space wall U-fac tors shall be based on the wall com -po nents and sur face air films. Ad ja cent soil shall not be con sid ered in thede ter mi na tion of the U-fac tor.

f. Typ i cal foun da tion in su la tion tech niques can be found in the DOE Build -ing Foun da tion De sign Hand book.

502.2.1 Com pli ance by per for mance on an in di vid ualcom po nent ba sis. Each com po nent of the build ing en ve -lope shall meet the pro vi sions of Ta ble 502.2 as pro vided inSec tions 502.2.1.1 through 502.2.1.6.

502.2.1.1 Walls. The com bined ther mal trans mit tancevalue (Uo) of the gross area of ex te rior walls shall not ex -ceed the value given in Ta ble 502.2. Equa tion 5-1 shall be

used to de ter mine ac cept able com bi na tions to meet thisre quire ment:

( ) ( ) ( )U

U A U A U A

Ao

w w g g d d

o

=× + × + ×

(Equa tion 5-1)

where:

Uo = The av er age ther mal trans mit tance of the grossarea of the ex te rior walls.

Ao = The gross area of ex te rior walls.

Uw = The com bined ther mal trans mit tance of thevar i ous paths of heat trans fer through the opaque ex te rior wall area.

Aw = Area of ex te rior walls that are opaque.

Ug = The com bined ther mal trans mit tance of allglaz ing within the gross area of ex te rior walls.

Ag = The area of all glaz ing within the gross area ofex te rior walls.

Ud = The com bined ther mal trans mit tance of allopaque doors within the gross area of ex te riorwalls.

Ad = The area of all opaque doors within the grossarea of ex te rior walls.

Notes: (1) When more than one type of wall, win dow ordoor is used, the U and A terms for those items shall beex panded into subelements as:

(Uw1 Aw1) + (Uw2 Aw2) + (Uw3 Aw3) +... (etc.)

(Equa tion 5-2)

(2) Ac cess doors or hatches in a wall as sem bly shall bein cluded as a subelement of the wall as sem bly.

502.2.1.1.1 Steel stud framed walls. When the wallscon tain steel stud fram ing, the value of Uw used inEqua tion 5-1 shall be re cal cu lated us ing a se ries pathpro ce dure to cor rect for par al lel path ther mal bridg -ing. The Uw for pur poses of Equa tion 5-1 of steel studwalls shall be de ter mined as fol lows:

( )[ ]UR R F

w

s ins c

=+ ×

1 (Equa tion 5-3)

where:

Rs = The to tal ther mal re sis tance of the el e mentscom pris ing the wall as sem bly along the path of heat trans fer, ex clud ing the cav ityin su la tion and the steel stud.

Rins = The R-value of the cav ity in su la tion.Fc = The cor rec tion fac tor listed in Ta ble

502.2.1.1.1.

Ex cep tion: Over all sys tem tested Uw val ues forsteel stud framed walls from ap proved lab o ra to -ries, when such data are ac cept able to the code of fi -cial.

RESIDENTIAL — COMPONENT PERFORMANCE APPROACH




0 1

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

HEATING DEGREE DAYS

ANNUAL FAHRENHEIT HEATING DEGREE DAYS, BASE 65°F (in thousands)

GROUP R-2, R-4,OR TOWNHOUSES

DETACHED ONE- AND TWO-FAMILY

DWELLINGS

AT 01-2,500

2,501-7,0007,001-13,000

13,001-14,000> 14,000

0.2650.265 - (HDD × 0.000034)0.2188 - (HDD × 0.00001555)0.110.11 - [(HDD - 13,000) × 0.000010]0.10

0-500501-3,000

3,001-6,0006,001-8,2008,201-9,500

9,501-10,000> 10,000

0.380.38 - [(HDD - 500) × 0.000066]0.2150.215 - [(HDD - 6,000) × 0.0000305]0.1480.148 - [(HDD - 9,500) × 0.0000558]0.12

MAXIMUM -FACTORU0

A-2

For SI: 1 Btu/h ⋅ ft2 ⋅ °F = 5.678W/(m2 ⋅ K), °C = [(°F)-32]/1.8.

FIG URE 502.2(1)Uo-FAC TORS—WALLS: RESIDENTIAL BUILD INGS

0 1

0.005

0.010

0.015

0.020

0.025

0.030

0.035

0.040

0.045

0.050

0.055

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

ANNUAL FAHRENHEIT HEATING DEGREE DAYS, 65°F (in thousands)BASE

HEATING DEGREE DAYS

AT 01-2,500

2,501-3,9003,901-6,0006,001-16,000

16,001-16,500> 16,500

0.050.05 - (HDD × 0.0000056)0.0360.036 - [(HDD - 3,900) × 0.00000476]0.0260.026 - [(HDD - 16,000) × 0.000002]0.025

MAXIMUM FACTORU -0


FIG URE 502.2(2)Uo-FAC TORS—ROOF/CEIL INGS



0 1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


HEATING DEGREE DAYSUNHEATED SLAB

UNHEATED SLAB

0-2,4992,500-4,500

4,501-19,500>19,500

NONE REQUIREDR-41.0 + (HDD × 0.000666)R-14

MINIMUM -VALUER

HEATING DEGREE DAYSHEATED SLAB

HEATED SLAB

0-499500-4,500

4,501-19,000>19,000

NONE REQUIREDR-62.5862 + (HDD X 0.000759)R-17

MINIMUM -VALUER

2FT 4FT


FIG URE 502.2(3)R-VALUES—SLAB ON GRADE



0 1

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21


HEATING DEGREE DAYS0-1,000

1,001-2,5002,501-15,50015,501-16,500

> 16,500

0.080.070.050.05 - [HDD - 15,500) × 0.000010]0.04

MAXIMUM FACTORU -o


FIG URE 502.2(4)Uo-FAC TORS—FLOOR OVER UN HEATED SPACES



10

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

0.11

0.12

0.13

0.14

0.15

0.16

0.17

0.18

0.19

0.20

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


HEATING DEGREE DAYS

0-499500-2,000

2,001-5,000> 5,000

NONE REQUIRED0.150.21 - (HDD × 0.000030)0.06

MAXIMUM -FACTORU


FIG URE 502.2(5)U-FAC TORS—CRAWL SPACE WALLS



0 1

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

0.11

0.12

0.13

0.14

0.15

0.16

0.17

0.18

0.19

0.20

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


HEATING DEGREE DAYS0-1,499

1,500-4,5004,501-8,5008,501-9,000

> 9,000

NONE REQUIRED0.205 - (HDD × 0.0000233)0.11125 - (HDD × 0.0000025)0.6 - (HDD × 0.00006)0.06

MAXIMUM -FACTORU


FIG URE 502.2(6)U-FAC TORS—BASEMENT WALLS



karenn

TABLE 502.2.1.1.1Fc VALUES FOR WALL SECTIONS WITH STEEL STUDS

PARALLEL PATH CORRECTION FACTORS

NOMINALSTUD SIZEa

SPACING OFFRAMING(inches)

CAVITY INSULATIONR-VALUE

CORRECTIONFACTOR

2 × 4 16 o.c.R-11R-13R-15

0.500.460.43

2 × 4 24 o.c.R-11R-13R-15

0.600.550.52

2 × 6 16 o.c. R-19R-21

0.370.35

2 × 6 24 o.c.R-19R-21

0.450.43

2 × 8 16 o.c. R-25 0.31

2 × 8 24 o.c. R -25 0.38

For SI: 1 inch = 25.4 mm.a. Ap plies to steel studs up to a max i mum thick ness of 0.064 inches (16

gage).

502.2.1.1.2 Mass walls. When ther mal mass credit isde sired for an ex te rior wall hav ing a heat ca pac itygreater than or equal to 6 Btu/ft2 ⋅ °F [1.06 kJ/(m2 ⋅K)], the Uw for such a wall shall be less than or equal to the ap pli ca ble value in Ta ble 502.2.1.1.2(1),502.2.1.1.2(2) or 502.2.1.1.2(3) based on the Uw re -quired for an ex te rior wall having a heat ca pac ity lessthan 6 Btu/ft2 ⋅ °F [1.06 kJ/(m2 ⋅ K)] as de ter mined bySec tion 502.2.1.1, Equa tion 5-1 and Fig ure 502.2(1).

Note: Ma sonry or con crete walls hav ing a massgreater than or equal to 30 lb/ft2 (146 kg/m2) of ex -te rior wall area and solid wood walls hav ing a mass greater than or equal to 20 lb/ft2 (98 kg/m2) of ex te -rior wall area have heat ca pac i ties equal to or ex -ceed ing 6 Btu/ft2 ⋅ °F [1.06 kJ/(m2 ⋅ K)] of ex te riorwall area.

The heat ca pac ity of the wall shall be de ter minedus ing Equa tion 5-4 as fol lows:

HC = w × c (Equa tion 5-4)

where:

HC = Heat ca pac ity of the ex te rior wall, Btu /ft2 ⋅ °F [kJ/(m2 ⋅ K)] of ex te rior wall area.

w = Mass of the ex te rior wall, lb/ft2 (kg/m2) of exterior wall area is the den sity of the ex te rior wall ma te rial, lb/ft3 (kg/m3) mul ti plied by the thick ness of the ex te rior wall, ft (m).

c = Spe cific heat of the ex te rior wall ma te rial,Btu/lb ⋅ °F [kJ/(kg ⋅ K)] of ex te rior wall area as de ter mined from Chap ter 24 of the ASHRAE Fun da men tals Hand book.

502.2.1.2 Roof/ceil ing. The com bined ther mal trans mit -tance value (Uo) of the gross area of the roof or ceil ing as -sem bly shall not ex ceed the value given in Ta ble 502.2.Equa tion 5-5 shall be used to de ter mine ac cept able com -bi na tions to meet this re quire ment.

( ) ( )U

U A U A

Ao

R R S S

o

=× + × (Equa tion 5-5)

where:

Uo = The av er age ther mal trans mit tance of the grossroof/ceil ing area, Btu/h ⋅ ft2 ⋅ EF [W/(m2 ⋅ K)].

Ao = The gross area of the roof/ceil ing as sem bly, square feet (m2).

UR = The com bined ther mal trans mit tance of thevar i ous paths of heat trans fer through the opaque roof/ceil ing area, Btu/h ⋅ ft2 ⋅ °F[W/(m2 ⋅ K)].

AR = Opaque roof/ceil ing as sem bly area, square feet (m2).

Us = The com bined ther mal trans mit tance of the areaof all sky light el e ments in the roof/ceil ing as sem bly (See Sec tion 502.2.1.2.1), Btu/h ⋅ ft2 ⋅ °F [W/(m2 ⋅ K)].

As = The area (in clud ing frame) of all sky lights inthe roof/ceil ing as sem bly, square feet (m2).(see Sec tion 502.2.1.2.1).

Notes: (1) When more than one type of roof/ceil ingand/or sky light is used, the U and A terms for those itemsshall be ex panded into their subelements as in Equa tion5-6:

(UR1 × AR1) + (UR2 × AR2) + ... etc. (Equa tion 5-6)

(2) Ac cess doors or hatches in a roof/ceil ing as sem blyshall be in cluded as a subelement of the roof/ceil ing as -sem bly.

(3)When the roof/cei l ing as sem bly con ta inscold-formed steel truss fram ing, the UR value to be usedin Equa tion 5-5 shall be de ter mined by Equa tion 5-7,5-8, or 5-9. These equa tions ap ply to cold-formed steeltruss roof fram ing spaced at 24 inches (609 mm) on-cen -ter and where the pen e tra tions of the truss mem bersthrough the cav ity in su la tion do not ex ceed three pen e -tra tions for each 4-foot (1220 mm) length of the truss.

For con struc tions with out foam be tween the dry walland bot tom chord of the steel truss use Equa tion 5-7:

( )UR

R

ins

=× +

1

0864 0330. .(Equa tion 5-7)

where:

Rins = The R-value of the cav ity in su la tion, h ⋅ ft2 ⋅ °F/Btu.





TABLE 502.2.1.1.2(3)REQUIRED Uw FOR WALL WITH A HEAT CAPACITY EQUAL

TO OR EXCEEDING 6 Btu/ft2 ⋅ °F WITH INTEGRALINSULATION (INSULATION AND MASS MIXED, SUCH AS A LOG WALL)

HEATINGDEGREE

DAYS

Uw REQUIRED FOR WALLS WITH A HEAT CAPACITY LESS THAN 6 Btu/ft2 ⋅ EF AS DETERMINEDBY USING EQUATION 5-1 AND FIGURE 502.2(1)

0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04

0 - 2,000 0.33 0.31 0.28 0.25 0.23 0.20 0.17 0.15 0.12 0.09 0.07

2,001 - 4,000 0.32 0.30 0.27 0.24 0.22 0.19 0.17 0.14 0.11 0.09 0.06

4,001 - 5,500 0.30 0.28 0.26 0.23 0.21 0.18 0.16 0.13 0.11 0.08 0.06

5,501 - 6,500 0.28 0.26 0.24 0.21 0.19 0.17 0.14 0.12 0.10 0.08 0.05

6,501 - 8,000 0.26 0.24 0.22 0.20 0.18 0.15 0.13 0.11 0.09 0.07 0.05

> 8,000 0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04

For SI: °C = [(°F)-32]/1.8, 1 Btu/ft2 ⋅ °F = 0.176 kJ/(m2 ⋅ °K).


TO OR EXCEEDING 6 Btu/ft2 ⋅ °F WITH INSULATION PLACED ON THE INTERIOR OF THE WALL MASS

HEATINGDEGREE

DAYS

Uw REQUIRED FOR WALLS WITH A HEAT CAPACITY LESS THAN 6 Btu/ft2 ⋅ °F AS DETERMINEDBY USING EQUATION 5-1 AND FIGURE 502.2(1)

0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04

0 - 2,000 0.29 0.27 0.25 0.22 0.20 0.17 0.15 0.12 0.09 0.07 0.04

2,001 - 4,000 0.28 0.26 0.24 0.21 0.19 0.16 0.14 0.12 0.09 0.07 0.04

4,001 - 5,500 0.27 0.25 0.23 0.21 0.19 0.16 0.14 0.11 0.09 0.07 0.04

5,501 - 6,500 0.26 0.24 0.22 0.20 0.17 0.15 0.13 0.11 0.09 0.06 0.04

6,501 - 8,000 0.25 0.23 0.21 0.19 0.17 0.14 0.12 0.10 0.08 0.06 0.04

> 8,000 0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04

For SI: °C = [(°F)-32]/1.8, 1 Btu/ft2 ⋅ °F = 0.176 kJ/(m2 ⋅ °K).


TO OR EXCEEDING 6 Btu/ft2 ⋅ EF WITH INSULATION PLACED ON THE EXTERIOR OF THE WALL MASS

HEATINGDEGREE

DAYS

Uw REQUIRED FOR WALLS WITH A HEAT CAPACITY LESS THAN 6 Btu/ft2 ⋅ EF AS DETERMINEDBY USING EQUATION 5-1 AND FIGURE 502.2(1)

0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04

0 - 2,000 0.33 0.31 0.28 0.26 0.23 0.21 0.18 0.16 0.13 0.11 0.08

2,001 - 4,000 0.32 0.30 0.27 0.25 0.22 0.20 0.17 0.15 0.13 0.10 0.08

4,001 - 5,500 0.30 0.28 0.25 0.23 0.21 0.18 0.16 0.14 0.11 0.09 0.07

5,501 - 6,500 0.28 0.26 0.23 0.21 0.19 0.17 0.15 0.12 0.10 0.08 0.06

6,501 - 8,000 0.26 0.24 0.22 0.19 0.17 0.15 0.13 0.11 0.09 0.07 0.05

> 8,000 0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04

For SI: °C = [( °F)-32]/1.8, 1 Btu/ft2 ⋅ °F = 0.176 kJ/(m2 ⋅ °K).

For con struc tions with R-3 foam be tween the dry walland bot tom chord of the steel truss use Equa tion 5-8:

( )UR

R

ins

=× +

1

0864 4 994. .

(Equa tion 5-8)

For con struc tions with R-5 foam be tween the dry walland bot tom chord of the steel truss use Equa tion 5-9:

( )UR

R

ins

=× +

1

0864 7 082. .

(Equa tion 5-9)

Ex cep tion: Over all sys tem tested UR val ues forroof/ceil ing as sem blies from ap proved lab o ra to ries,when such data are ac cept able to the code of fi cial.

(4)When the roof/ceil ing as sem bly con tains con ven -tional C-shaped cold-formed joist/raf ter steel fram ing,the UR value to be used in equa tion 5-5 shall be de ter -mined Equa tion 5-10 as fol lows:

( )UR R F

R

s ins cor

=+ ×

1 (Equa tion 5-10)

where:

RS = The to tal ther mal re sis tance of the el e ments of roof/ceil ing con struc tion, in a se ries along the path of heat trans fer, ex clud ing the cav ity

insula-tion and the steel fram ing, h ⋅ ft2 ⋅ °F/Btu.

Rins = The R-value of the cav ity in su la tion, h ⋅ ft2 ⋅ °F/Btu.

Fcor = The cor rec tion fac tor listed in Ta ble 502.2.1.2, dimensionless.

Ex cep tion: Over all sys tem tested UR val ues forroof/ceil ing as sem blies from ap proved lab o ra to ries,when such data are ac cept able to the code of fi cial.

502.2.1.2.1 Sky lights. Sky light shafts, 12 inches (305 mm) in depth and greater, shall be in su lated to no lessthan R-13 in cli mates 0 - 4,000 HDD and R-19 in cli -mates greater than 4,000 HDD. The sky light shaftther mal per for mance shall not be in cluded in the roofther mal trans mis sion co ef fi cient cal cu la tion.

502.2.1.3 Floors over un heated spaces. The com binedther mal trans mit tance fac tor (Uo) of the gross area offloors over un heated spaces shall not ex ceed the valuegiven in Ta ble 502.2. For floors over out door air (i.e.,over hangs), Uo-fac tors shall not ex ceed the value forroofs given in Ta ble 502.2. Equa tion 5-11 shall be used to de ter mine ac cept able com bi na tions to meet this re quire -ment.

( ) ( ) ( )U

U A U A U A

Ao

f f f f fn fn

o

=× + × + + ×1 1 2 2 K

(Equa tion 5-11)

where:

Uo = The av er age ther mal trans mit tance of the grossfloor area, Btu/h ⋅ ft2 ⋅ °F [W/(m2 ⋅ K)].

Ao = The gross area of the dif fer ent floor as sem blies, square feet (m2).

Ufn = The com bined ther mal trans mit tance of thevar i ous paths of heat trans fer through the nth

floor as sem bly, Btu/h ⋅ ft2 ⋅ °F [W/(m2 ⋅ K)].

Afn = The area as so ci ated with the nth floor as sem bly, square feet (m2).

Note: Ac cess doors or hatches in a floor as sem bly shallbe in cluded as a subelement of the floor as sem bly.

Ex cep tions: When the floor as sem bly con tainsC-shaped, cold-formed steel fram ing, the value of Ufn



TABLE 502.2.1.2CORRECTION FACTORS (Fcor) FOR ROOF/CEILING ASSEMBLIES

MEMBERSIZEa

SPACING OFFRAMING MEMBERSb

(INCHES)

CAVITY INSULATION R-VALUE

R-19 R-30 R-38 R-49

2 × 4

16 o.c.

0.90 0.94 0.95 0.96

2 × 6 0.70 0.81 0.85 0.88

2 × 8 0.35 0.65 0.72 0.78

2 ×10 0.35 0.27 0.62 0.70

2 ×12 0.35 0.27 0.51 0.62

2 × 4

24 o.c.

0.95 0.96 0.97 0.97

2 × 6 0.78 0.86 0.88 0.91

2 × 8 0.44 0.72 0.78 0.83

2 ×10 0.44 0.35 0.69 0.76

2 ×12 0.44 0.35 0.61 0.69

For SI: 1 inch = 25.4 mm.a. Ap plies to steel fram ing mem bers up to a max i mum thick ness of 0.064 inches (16 gage).b. Lin ear in ter po la tion for de ter min ing cor rec tion fac tors which are in ter me di ate be tween those given in the ta ble is per mit ted.

used in Equa tion 5-11 shall be re cal cu lated us ing a se -ries of path pro ce dure to cor rect for par al lel path ther -mal bridg ing. The Ufn for pur poses of Equa tion 5-11for C-shaped, cold-formed steel-fram ing con struc -tion shall be de ter mined us ing Equa tion 5-12 as fol -lows:

( )UR R F

fn

fn ins cor

=+ ×

1 (Equa tion 5-12)

where:

Rfn = The to tal ther mal re sis tance of the el e ments of floor con struc tion, in se ries along the path of heat trans fer, ex clud ing the cav ity in su la tion and the steel joist, h ⋅ ft2 ⋅°F/Btu.

Rins = The R-value of the cav ity in su la tion,h ⋅ ft2 ⋅ °F/Btu.

Fcor = The cor rec tion fac tor listed in Ta ble 502.2.1.3, dimensionless.

Ex cep tion: Over all sys tem tested Ufn val ues for steel-framed floors from ap proved lab o ra to ries, when suchdata are ac cept able to the code of fi cial.

502.2.1.4 Slab-on-grade floors. The ther mal re sis tanceof the in su la tion around the per im e ter of the floor shallnot be less than the value given in Ta ble 502.2. Where in -su la tion is not re quired in ac cor dance with Foot note d toTa ble 502.2, build ing en ve lope com pli ance shall be dem -on strated by us ing Sec tion 502.2.2 or Chap ter 4 with theac tual slab in su la tion R-value in Ta ble 502.2; or us ingSec tion 502.2.4.

In su la tion shall be of an ap proved type, and placed onthe out side of the foun da tion or on the in side of a foun da -tion wall. In cli mates be low 6,000 an nual Fahr en heit

HDD, the in su la tion shall ex tend down ward from the el -e va tion of the top of the slab for a min i mum dis tance of24 inches (610 mm) or down ward to at least the bot tom of the slab and then hor i zon tally to the in te rior or ex te riorfor a min i mum to tal dis tance of 24 inches (610 mm). Inall cli mates equal to or greater than 6,000 HDD, the in su -la tion shall ex tend down ward from the el e va tion of thetop of the slab for a min i mum of 48 inches (1219 mm) ordown ward to at least the bot tom of the slab and then hor i -zon tally to the in te rior or ex te rior for a min i mum to taldis tance of 48 inches (1219 mm). In all cli mates, hor i -zon tal in su la tion ex tend ing out side of the foun da tionshall be cov ered by pave ment or by soil a min i mum of 10inches (254 mm) thick. The top edge of the in su la tion in -stalled be tween the ex te rior wall and the edge of theinterior slab shall be per mit ted to be cut at a 45-de gree(0.8 rad) an gle away from the ex te rior wall.

502.2.1.5 Crawl space walls. If the floor above a crawlspace does not meet the re quire ments of Sec tion502.2.1.3 and the crawl space does not have ven ti la tionopen ings that com mu ni cate di rectly with the out side air,then the ex te rior walls of the crawl space shall have ather mal trans mit tance value not ex ceed ing the valuegiven in Ta ble 502.2. Where the in side ground sur face is12 inches (305 mm) or greater be low the out side fin ishground level, in su la tion shall ex tend from the top of thewall to at least the in side ground sur face [see Ap pen dixDe tail 502.2.1.5(1) and the DOE Foun da tion De signHand book]. Where the in side ground sur face is less than12 inches (305 mm) be low the out side fin ish groundlevel, in su la tion shall ex tend from the top of the crawlspace wall to the top of the foot ing [see Ap pen dix De tail502.2.1.5(2) and the DOE Foun da tion De sign Hand -book].



TABLE 502.2.1.3CORRECTION FACTORS (Fcor) FOR STEEL FLOOR ASSEMBLIES

MEMBERSIZEa

SPACING OFFRAMING

MEMBERSb

(INCHES)

CAVITY INSULATION R-VALUE

R-19 R-30 R-38

2 × 6

16 o.c.

0.70 Not Applicable Not Applicable

2 × 8 0.35 Not Applicable Not Applicable

2 × 10 0.35 0.27 Not Applicable

2 × 12 0.35 0.27 0.24

2 × 6

24 o.c.

0.78 Not Applicable Not Applicable

2 × 8 0.44 Not Applicable Not Applicable

2 × 10 0.44 0.35 Not Applicable

2 × 12 0.44 0.35 0.32

For SI: 1 inch = 25.4 mm.a. Ap plies to steel fram ing mem bers up to a max i mum thick ness of 0.064 inches (16 gage).b. Lin ear interpolation is per mit ted for de ter min ing cor rec tion fac tors which are be tween those given in the table.

502.2.1.6 Base ment walls. The ex te rior walls of con di -tioned base ments shall have a trans mit tance value not ex -ceed ing the value given in Ta ble 502.2 from the top of thebase ment wall to a depth of 10 feet (3048 mm) be low theout side fin ish ground level, or to the level of the base ment floor, which ever is less.

502.2.2 Com pli ance by to tal build ing en ve lope per for -mance. The build ing en ve lope de sign of a pro posed build -ing shall be per mit ted to de vi ate from the Uo-fac tors,U-fac tors, or R-val ues spec i fied in Ta ble 502.2, pro vided the to tal ther mal trans mis sion heat gain or loss for the pro posedbuild ing en ve lope does not ex ceed the to tal heat gain or lossre sult ing from the pro posed build ing’s con for mance to theval ues spec i fied in Ta ble 502.2. For base ment and crawlspace walls that are part of the build ing en ve lope, the U-fac -tor of the pro posed foun da tion shall be ad justed by theR-value of the ad ja cent soil where the cor re spond ing U-fac -tor in Ta ble 502.2 is sim i larly ad justed. Heat gain or loss cal -cu la tions for slab edge and base ment or crawl space wallfoun da tions shall be de ter mined us ing meth ods con sis tentwith the ASHRAE Fun da men tals Hand book.

502.2.3 Com pli ance by ac cept able prac tice on an in di -vid ual com po nent ba sis. Each com po nent of the build ingen ve lope shall meet the pro vi sions of Ta ble 502.2 as pro -vided in Sec tions 502.2.3.1 through 502.2.3.6. The var i ouswalls, roof and floor as sem blies de scribed in Sec tion502.2.3 are typ i cal and are not in tended to be all in clu sive.Other as sem blies shall be per mit ted, pro vided doc u men ta -tion is sub mit ted in di cat ing the ther mal trans mit tance valueof the opaque sec tion. Doc u men ta tion shall be in ac cor -dance with ac cepted en gi neer ing prac tice.

502.2.3.1 Walls. The Uo of the ex te rior wall shall be de -ter mined in ac cor dance with Equa tion 5-13.

( ) ( )U

U A U Ao

f f w f× + × −100

100

(Equa tion 5-13)

where:

Uo = The over all ther mal trans mit tance of the gross ex te rior wall area.

Uf = The av er age ther mal trans mit tance of the glaz-ing area.

Af =Glazing Area

Gross Exterior Wall Area 100×

(Equa tion 5-14)

Uw = The av er age ther mal trans mit tance of the opaque ex te rior wall area.

The U-fac tor for the opaque por tion of the ex te riorwall (Uw) shall meet the pro vi sions of Ta ble 502.2 as de -ter mined by Equa tion 5-13, and be se lected from Ta ble502.2.3.1(1), 502.2.3.1(2) or 502.2.3.1(3) listed in theAp pen dix. The glaz ing U-fac tor (Uf) and the per cent ageof glaz ing area (Af) shall con sist of all glazed sur faces inthe build ing en ve lope mea sured us ing the rough open ing

and in clud ing the sash, curb ing and other fram ing el e -ments that en close con di tioned spaces. The value of Uf

shall be de ter mined in ac cor dance with Sec tion 102.5.2. Opaque doors in the build ing en ve lope shall have a max -i mum U-fac tor of 0.35. One door shall be ex empt fromthis re quire ment.

Ex cep tions:

1. When the ex te rior wall(s) is com prised of steelstud fram ing mem bers, the pro ce dure con -tained in Sec tion 502.2.1.1.1 shall be used toad just the U-fac tor of the opaque sec tions ofsuch walls prior to se lec tion of the ap pro pri ateac cept able prac tice(s) from Ap pen dix Ta ble502.2.3.1(1).

2. When the ther mal mass of the ex te rior build ingwalls is con sid ered, the pro ce dure con tained inSec tion 502.2.1.1.2 shall be used to ad just theU-fac tor of the opaque sec tions of such wallsprior to the se lec tion of the ap pro pri ate ac cept -able prac tice(s) from Ta ble 502.2.3.1(2) or502.2.3.1(3) listed in the Ap pen dix.

502.2.3.2 Roof/ceil ing. The roof/ceil ing as sem bly shallbe se lected from Ap pen dix Ta ble 502.2.3.2 for a ther maltrans mit tance value not ex ceed ing the value spec i fied forroofs/ceil ings in Ta ble 502.2.

Ex cep tion: When the roof/ceil ing is com prised of as -sem blies con tain ing truss type or C-shaped,cold-formed steel-fram ing mem bers, the pro ce dureout lined in Sec tion 502.2.1.2 shall be used to ad justthe roof/ceil ing U-fac tor be fore se lect ing a roof/ceil -ing as sem bly from Ap pen dix Ta ble 502.2.3.2.

502.2.3.3 Floors over un heated spaces. The floor sec -tion over an un heated space shall be se lected from Ap -pen dix Ta ble 502.2.3.3 for the over all ther maltrans mit tance fac tor (Uo) not ex ceed ing the value spec i -fied for floors over un heated spaces in Ta ble 502.2. Forfloors over out door air (i.e., over hangs), Uo-fac tors forheat ing shall meet the same re quire ment as shown forroofs/ceil ings in Ta ble 502.2.

Ex cep tion: When the floor is com prised of C-shaped, cold-formed steel-fram ing mem bers, the pro ce dureout lined in Sec tion 502.2.1.3 shall be used to ad justthe floor U-fac tor be fore se lect ing a floor as sem blyfrom Ap pen dix Ta ble 502.2.3.3.

502.2.3.4 Slab-on-grade floors. Slab-on-grade floorsshall meet the pro vi sions of Ta ble 502.2 as de ter mined by Sec tion 502.2.1.4.

502.2.3.5 Crawl space walls. Where the floor above acrawl space does not meet the re quire ments of Sec tion502.2.3.3 and the crawl space does not have ven ti la tionopen ings that com mu ni cate di rectly with the out side air,then the ex te rior walls of the crawl space shall have ather mal trans mit tance value not ex ceed ing the valuegiven in Ta ble 502.2. The U-fac tor of the ex te rior crawlspace wall shall be de ter mined by se lect ing the U-fac tor



for the ap pro pri ate crawl space wall sec tion for Ap pen -dix Ta ble 502.2.3.5.Where the in side ground sur face is12 inches (305 mm) or greater be low the out side fin ishground level, in su la tion shall ex tend from the top of thewall to at least the in side ground sur face [see Ap pen dixDe tail 502.2.1.5(1) and the DOE Foun da tion De signHand book]. Where the in side ground sur face is less than12 inches (305 mm) be low the out side fin ish groundlevel, in su la tion shall ex tend from the top of the crawlspace wall to the top of the foot ing [see Ap pen dix De tail502.2.1.5(2) and the DOE Foun da tion De sign Hand -book].

502.2.3.6 Base ment walls. The ex te rior walls of con di -tioned base ments shall have a ther mal trans mit tancevalue not ex ceed ing the value given in Ta ble 502.2 fromthe top of the base ment wall to a depth of 10 feet (3048mm) be low grade, or to the level of the base ment floor,which ever is less. The U-fac tor of the wall shall be de ter -mined by se lect ing the U-fac tor for the wall sec tion fromAp pen dix Ta ble 502.2.3.6.

502.2.4 Com pli ance by pre scrip tive spec i fi ca tion on anin di vid ual com po nent ba sis. For build ings with a win dowarea less than or equal to 8 per cent, 12 per cent, 15 per cent,18 per cent, 20 per cent or 25 per cent (de tached one- andtwo-fam ily dwell ings) or 20 per cent, 25 per cent or 30 per -

cent (Group R-2, R-4 or town house res i den tial build ings) ofthe gross ex te rior wall area, the ther mal re sis tance of in su la -tion ap plied to the opaque build ing en ve lope com po nentsshall be greater than or equal to the min i mum R-val ues, andthe area-weighted av er age ther mal trans mit tance (U-fac tor)of all fen es tra tion as sem blies (other than opaque doorswhich are gov erned by Sec tion 502.2.4.6) shall be less thanor equal to the max i mum U-fac tors shown in Ta ble502.2.4(1), 502.2.4(2), 502.2.4(3), 502.2.4(4), 502.2.4(5),502.2.4(6), 502.2.4(7), 502.2.4(8), or 502.2.4(9), as ap pli -ca ble. Sec tions 502.2.4.1 through 502.2.4.19 shall ap ply tothe use of these ta bles.

502.2.4.1 Walls. The sum of the ther mal re sis tance ofcav ity in su la tion plus in su lat ing sheath ing (if used) shallmeet or ex ceed the “Ex te rior wall R-value.”

502.2.4.2 Wood con struc tion only. The ta bles shall only be used for wood con struc tion.

502.2.4.3 Win dow area. The ac tual win dow area of apro posed de sign shall be com puted us ing the roughopen ing area of all sky lights, above-grade win dows and,where the base ment is con di tioned space, any base mentwin dows.

502.2.4.4 Win dow area, ex empt. One per cent of the to -tal win dow area com puted un der Sec tion 502.2.4.3 shallbe ex empt from the “Glazing U-fac tor” re quire ment.



TABLE 502.2.4(1)PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS, DETACHED ONE- AND TWO-FAMILY DWELLINGS

WINDOW AREA 8 PERCENT OF GROSS EXTERIOR WALL AREA

ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

Glazing U-factor

CeilingR-value

Exterior wallR-value

FloorR-value

Basement wallR-value

Slab perimeterR-value and depth

Crawl space wallR-value

1 0 - 499 Any R-13 R-11 R-11 R-0 R-0 R-0

2 500 - 999 Any R-19 R-11 R-11 R-0 R-0 R-4

3 1,000 - 1,499 Any R-19 R-11 R-11 R-0 R-0 R-5

4 1,500 - 1,999 Any R-19 R-11 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.90 R-19 R-11 R-11 R-5 R-0 R-6

6 2,500 - 2,999 0.70 R-26 R-11 R-11 R-5 R-0 R-6

7 3,000 - 3,499 0.70 R-26 R-11 R-13 R-5 R-0 R-6

8 3,500 - 3,999 0.65 R-30 R-11 R-13 R-6 R-2, 2 ft. R-7

9 4,000 - 4,499 0.59 R-30 R-11 R-15 R-8 R-2, 2 ft. R-9

10 4,500 - 4,999 0.55 R-30 R-13 R-15 R-8 R-2, 2 ft. R-12

11 5,000 - 5,499 0.52 R-30 R-13 R-19 R-9 R-7, 2 ft. R-16

12 5,500 - 5,999 0.45 R-38 R-13 R-19 R-9 R-7, 2 ft. R-16

13 6,000 - 6,499 0.45 R-38 R-16 R-19 R-10 R-7, 4 ft. R-16

14 6,500 - 6,999 0.43 R-38 R-16 R-19 R-10 R-7, 4 ft. R-16

15 7,000 - 8,499 0.42 R-38 R-16 R-19 R-11 R-8, 4 ft. R-16

16 8,500 - 8,999 0.42 R-38 R-16 R-19 R-16 R-8, 4 ft. R-16

17 9,000 - 12,999 0.42 R-38 R-16 R-19 R-16 R-11, 4 ft. R-16

For SI: 1 foot = 304.8 mm.





ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

Glazing U-factor

CeilingR-value


FloorR-value




1 0 - 499 Any R-13 R-11 R-11 R-0 R-0 R-0

2 500 - 999 Any R-19 R-11 R-11 R-0 R-0 R-4

3 1,000 - 1,499 0.75 R-19 R-11 R-11 R-0 R-0 R-5

4 1,500 - 1,999 0.75 R-19 R-11 R-11 R-4 R-0 R-5

5 2,000 - 2,499 0.65 R-19 R-13 R-11 R-5 R-0 R-5

6 2,500 - 2,999 0.60 R-26 R-13 R-13 R-5 R-0 R-5

7 3,000 - 3,499 0.60 R-30 R-13 R-15 R-6 R-0 R-6

8 3,500 - 3,999 0.60 R-30 R-13 R-19 R-8 R-4, 2 ft. R-10

9 4,000 - 4,499 0.55 R-38 R-13 R-19 R-9 R-4, 2 ft. R-12

10 4,500 - 4,999 0.50 R-38 R-14 R-19 R-9 R-5, 2 ft. R-16

11 5,000 - 5,499 0.45 R-38 R-16 R-19 R-9 R-6, 2 ft. R-16

12 5,500 - 5,999 0.45 R-38 R-17 R-19 R-9 R-6, 2 ft. R-16

13 6,000 - 6,499 0.40 R-38 R-18 R-19 R-10 R-6, 4 ft. R-16

14 6,500 - 6,999 0.40 R-49 R-21 R-19 R-10 R-7, 4 ft. R-17

15 7,000 - 8,499 0.40 R-49 R-21 R-19 R-10 R-9, 4 ft. R-17

16 8,500 - 8,999 0.40 R-49 R-21 R-19 R-16 R-9, 4 ft. R-17

17 9,000 - 12,999 0.40 R-49 R-21 R-19 R-16 R-11, 4 ft. R-17




ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value


FloorR-value




1 0 - 499 Any R-13 R-11 R-11 R-0 R-0 R-0

2 500 - 999 0.90 R-19 R-11 R-11 R-0 R-0 R-4

3 1,000 - 1,499 0.75 R-19 R-11 R-11 R-0 R-0 R-5

4 1,500 - 1,999 0.75 R-26 R-13 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.65 R-30 R-13 R-11 R-5 R-0 R-6

6 2,500 - 2,999 0.60 R-30 R-13 R-19 R-6 R-4, 2 ft. R-7

7 3,000 - 3,499 0.55 R-30 R-13 R-19 R-7 R-4, 2 ft. R-8

8 3,500 - 3,999 0.50 R-30 R-13 R-19 R-8 R-5, 2 ft. R-10

9 4,000 - 4,499 0.45 R-38 R-13 R-19 R-8 R-5, 2 ft. R-11

10 4,500 - 4,999 0.45 R-38 R-16 R-19 R-9 R-6, 2 ft. R-17

11 5,000 - 5,499 0.45 R-38 R-18 R-19 R-9 R-6, 2 ft. R-17

12 5,500 - 5,999 0.40 R-38 R-18 R-21 R-10 R-9, 2 ft. R-19

13 6,000 - 6,499 0.35 R-38 R-18 R-21 R-10 R-9, 4 ft. R-20

14 6,500 - 6,999 0.35 R-49 R-21 R-21 R-11 R-11, 4 ft. R-20

15 7,000 - 8,499 0.35 R-49 R-21 R-21 R-11 R-13, 4 ft. R-20

16 8,500 - 8,999 0.35 R-49 R-21 R-21 R-18 R-14, 4 ft. R-20

17 9,000 - 12,999 0.35 R-49 R-21 R-21 R-19 R-18, 4 ft. R-20






ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value


FloorR-value




1 0 - 499 0.80 R-19 R-11 R-11 R-0 R-0 R-0

2 500 - 999 0.75 R-19 R-11 R-11 R-0 R-0 R-4

3 1,000 - 1,499 0.70 R-26 R-13 R-11 R-0 R-0 R-5

4 1,500 - 1,999 0.65 R-30 R-13 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.55 R-30 R-13 R-11 R-5 R-0 R-6

6 2,500 - 2,999 0.52 R-30 R-13 R-19 R-6 R-0 R-7

7 3,000 - 3,499 0.50 R-38 R-13 R-19 R-7 R-0 R-8

8 3,500 - 3,999 0.46 R-38 R-13 R-19 R-8 R-6, 2 ft. R-11

9 4,000 - 4,499 0.40 R-38 R-13 R-19 R-9 R-6, 2 ft. R-13

10 4,500 - 4,999 0.37 R-38 R-15 R-19 R-9 R-6, 2 ft. R-16

11 5,000 - 5,499 0.37 R-38 R-16 R-19 R-9 R-7, 2 ft. R-17

12 5,500 - 5,999 0.37 R-38 R-19 R-19 R-10 R-8, 2 ft. R-17

13 6,000 - 6,499 0.34 R-49 R-22 R-19 R-10 R-8, 4 ft. R-17

14 6,500 - 6,999 0.33 R-49 R-22 R-25 R-11 R-14, 4 ft. R-19

15 7,000 - 8,499 0.33 R-49 R-25 R-30 R-15 Note a R-25

16 8,500 - 8,999 0.33 R-49 R-25 R-30 R-19 Note a R-25

17 9,000 - 12,999 0.33 R-49 R-25 R-30 R-19 Note a R-25

For SI: 1 foot = 304.8 mm.a. See Sec tion 502.2.4.13.



ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value


FloorR-value




1 0 - 499 0.80 R-19 R-11 R-11 R-0 R-0 R-0

2 500 - 999 0.75 R-30 R-13 R-11 R-0 R-0 R-4

3 1,000 - 1,499 0.70 R-30 R-13 R-11 R-0 R-0 R-5

4 1,500 - 1,999 0.60 R-30 R-13 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.52 R-38 R-13 R-11 R-5 R-0 R-6

6 2,500 - 2,999 0.50 R-38 R-13 R-19 R-6 R-0 R-7

7 3,000 - 3,499 0.46 R-38 R-13 R-19 R-7 R-0 R-9

8 3,500 - 3,999 0.42 R-38 R-13 R-19 R-8 R-6, 2 ft. R-10

9 4,000 - 4,499 0.37 R-38 R-13 R-19 R-9 R-6, 2 ft. R-13

10 4,500 - 4,999 0.37 R-38 R-16 R-19 R-9 R-6, 2 ft. R-16

11 5,000 - 5,499 0.36 R-38 R-19 R-19 R-9 R-6, 2 ft. R-16

12 5,500 - 5,999 0.33 R-49 R-20 R-19 R-10 R-7, 2 ft. R-17

13 6,000 - 6,499 0.31 R-49 R-24 R-19 R-10 R-7, 4 ft. R-17

14 6,500 - 6,999 0.30 R-49 R-26 R-21 R-11 R-10, 4 ft. R-17

15 7,000 - 8,499 0.30 R-49 R-26 R-21 R-11 R-12, 4 ft. R-19

16 8,500 - 8,999 0.30 R-49 R-26 R-21 R-19 R-12, 4 ft. R-19

17 9,000 - 12,999 0.30 R-49 R-26 R-21 R-19 R-16, 4 ft. R-19






ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value


FloorR-value




1 0 - 499 0.70 R-30 R-11 R-11 R-0 R-0 R-0

2 500 - 999 0.65 R-30 R-13 R-11 R-0 R-0 R-4

3 1,000 - 1,499 0.55 R-30 R-13 R-11 R-0 R-0 R-5

4 1,500 - 1,999 0.52 R-30 R-13 R-13 R-6 R-0 R-6

5 2,000 - 2,499 0.50 R-38 R-13 R-19 R-8 R-0 R-10

6 2,500 - 2,999 0.46 R-38 R-16 R-19 R-6 R-0 R-7

7 3,000 - 3,499 0.45 R-38 R-19 R-19 R-7 R-0 R-9

8 3,500 - 3,999 0.41 R-38 R-19 R-19 R-8 R-6, 2 ft. R-10

9 4,000 - 4,499 0.37 R-38 R-19 R-19 R-9 R-6, 2 ft. R-13

10 4,500 - 4,999 0.33 R-38 R-19 R-19 R-9 R-6, 2 ft. R-17

11 5,000 - 5,499 0.29 R-38 R-19 R-19 R-9 R-6, 2 ft. R-17

12 5,500 - 5,999 0.27 R-38 R-19 R-21 R-10 Note a R-22

13 6,000 - 6,499 0.25 R-49 R-19 R-21 R-10 R-9, 4 ft. R-20

14 6,500 - 6,999 0.25 R-49 R-19 R-30 R-14 Note a Note a

15 7,000 - 8,499 0.25 R-49 R-19 R-30 R-15 Note a Note a

16 8,500 - 8,999 0.25 R-49 R-19 R-30 R-28 Note a Note a

17 9,000 - 12,999 0.25 R-49 R-19 R-30 R-28 Note a Note a


TABLE 502.2.4(7)PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS, GROUP R-2, R-4 OR TOWNHOUSE RESIDENTIAL BUILDINGS


ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value


FloorR-value




1 0 - 499 Any R-13 R-11 R-11 R-0 R-0 R-0

2 500 - 999 Any R-19 R-11 R-11 R-0 R-0 R-5

3 1,000 - 1,499 Any R-19 R-11 R-11 R-0 R-0 R-5

4 1,500 -1,999 0.85 R-19 R-11 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.70 R-19 R-11 R-11 R-5 R-0 R-5

6 2,500 - 2,999 0.55 R-30 R-13 R-11 R-5 R-0 R-5

7 3,000 - 3,499 0.55 R-30 R-13 R-11 R-5 R-0 R-5

8 3,500 - 3,999 0.55 R-30 R-13 R-11 R-5 R-0 R-5

9 4,000 - 4,499 0.55 R-38 R-13 R-11 R-5 R-0 R-5

10 4,500 - 4,999 0.50 R-26 R-11 R-13 R-6 R-0 R-7

11 5,000 - 5,499 0.50 R-26 R-13 R-11 R-5 R-0 R-6

12 5,500 - 5,999 0.50 R-30 R-13 R-11 R-5 R-0 R-6

13 6,000 - 6,499 0.50 R-26 R-13 R-19 R-9 R-5, 4 ft. R-14

14 6,500 - 6,999 0.45 R-30 R-13 R-19 R-10 R-7, 4 ft. R-16

15 7,000 - 8,499 0.35 R-38 R-16 R-19 R-11 R-9, 4 ft. R-18

16 8,500 - 8,999 0.35 R-38 R-16 R-19 R-17 R-10, 4 ft. R-18

17 9,000 - 12,999 Note a Note a Note a Note a Note a Note a Note a






ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value


FloorR-value




1 0 - 499 Any R-13 R-11 R-11 R-0 R-0 R-0

2 500 - 999 Any R-19 R-11 R-11 R-0 R-0 R-5

3 1,000 - 1,499 Any R-19 R-11 R-11 R-0 R-0 R-5

4 1,500 - 1,999 0.85 R-19 R-11 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.70 R-19 R-11 R-11 R-5 R-0 R-5

6 2,500 - 2,999 0.55 R-30 R-13 R-11 R-5 R-0 R-5

7 3,000 - 3,499 0.55 R-30 R-13 R-11 R-5 R-0 R-5

8 3,500 - 3,999 0.55 R-30 R-13 R-11 R-5 R-0 R-5

9 4,000 - 4,499 0.54 R-30 R-13 R-11 R-5 R-0 R-5

10 4,500 - 4,999 0.53 R-30 R-13 R-11 R-5 R-0 R-6

11 5,000 - 5,499 0.52 R-30 R-13 R-11 R-5 R-0 R-6

12 5,500 - 5,999 0.51 R-30 R-13 R-11 R-6 R-0 R-6

13 6,000 - 6,499 0.51 R-30 R-13 R-19 R-10 R-7, 4 ft. R-16

14 6,500 - 6,999 0.45 R-30 R-13 R-19 R-10 R-7, 4 ft. R-16

15 7,000 - 8,499 0.35 R-38 R-16 R-19 R-11 R-9, 4 ft. R-18

16 8,500 - 8,999 0.35 R-38 R-16 R-19 R-17 R-10, 4 ft. R-18


For SI: 1 foot = 304.8 mm.a. See Sec tion 502.2.4.13



ZONEHEATING

DEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value


FloorR-value




1 0 - 499 0.90 R-13 R-11 R-11 R-0 R-0 R-0

2 500 - 999 0.75 R-19 R-11 R-11 R-0 R-0 R-3

3 1,000 - 1,499 0.70 R-19 R-11 R-11 R-0 R-0 R-4

4 1,500 - 1,999 0.65 R-26 R-11 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.57 R-38 R-13 R-11 R-5 R-0 R-6

6 2,500 - 2,999 0.47 R-38 R-13 R-19 R-7 R-0 R-8

7 3,000 - 3,499 0.47 R-38 R-13 R-19 R-7 R-0 R-9

8 3,500 - 3,999 0.46 R-38 R-13 R-19 R-8 R-4, 2 ft. R-9

9 4,000 - 4,499 0.46 R-38 R-13 R-19 R-9 R-6, 2 ft. R-13

10 4,500 - 4,999 0.45 R-38 R-13 R-19 R-9 R-6, 2 ft. R-15

11 5,000 - 5,499 0.45 R-38 R-13 R-19 R-10 R-8, 2 ft. R-18

12 5,500 - 5,999 0.44 R-38 R-13 R-19 R-10 R-8, 2 ft. R-18

13 6,000 - 6,499 0.44 R-38 R-19 R-19 R-10 R-8, 4 ft. R-18

14 6,500 - 6,999 0.38 R-38 R-19 R-19 R-10 R-8, 4 ft. R-18

15 7,000 - 8,499 0.32 R-49 R-21 R-30 R-18 Note a Note a

16 8,500 - 8,999 0.32 R-49 R-21 R-30 Note a Note a Note a


For SI: 1 foot = 304.8 mm.a. See Sec tion 502.2.4.13

502.2.4.5 Truss/raf ter con struc tion. “Ceil ing R-value”as sumes stan dard truss or raf ter con struc tion. Whereraised-heel trusses or other con struc tion tech niques areem ployed to ob tain the full height of ceil ing in su la tionover the ex te rior wall top plate, R-30 shall be per mit ted to be used where R-38 is re quired in the ta ble, and R-38shall be per mit ted to be used where R-49 is re quired.

502.2.4.6 Doors. Opaque doors in the build ing en ve lopeshall have a max i mum U-fac tor of 0.35. One door shallbe ex empt from this re quire ment.

502.2.4.7 Ceil ings. “Ceil ing R-value” shall be re quiredfor flat or “ca the dral” (in clined) ceil ings.

502.2.4.8 Floors. “Floor R-value” shall ap ply to floorsover un con di tioned spaces. A floor over out side air shallmeet the re quire ment for “Ceil ing R-value.”

502.2.4.9 Base ment walls. Base ment wall in su la tionshall be in stalled in ac cor dance with Sec tion 502.2.1.6.

502.2.4.10 Un heated slabs. Slab per im e ter in su la tionshall be in stalled in ac cor dance with Sec tion 502.2.1.4.

502.2.4.11 Heated slabs. R-2 shall be added to the “Slabper im e ter R-value” where the slab is heated.

502.2.4.12 Crawl space walls. “Crawl space wallR-value” shall ap ply to un ven ti lated crawl spaces only.Crawl space in su la tion shall be in stalled in ac cor dancewith Sec tion 502.2.1.5.

502.2.4.13 Ta bles not ap pli ca ble. The par tic u lar cli -mate range in di cated by Note a in Ta bles 502.2.4(4),502.2.4(6), 502.2.4(7), 502.2.4(8) and 502.2.4(9) shallnot be used with the in di cated en ve lope com po nent(s) todem on strate com pli ance un der Sec tion 502.2.4.

502.2.4.14 Cli mates greater than 13,000 HDD. Theseta bles shall not be used for cli mates greater than or equalto 13,000 HDD.

502.2.4.15 Fen es tra tion so lar heat gain co ef fi cient. Inlo ca tions with HDD less than 3,500, fen es tra tion prod -ucts shall also meet the re quire ments of Sec tion 502.1.5.

502.2.4.16 Steel-framed wall con struc tion. Wheresteel fram ing is used in wall con struc tion, the wall as sem -bly shall meet the equiv a lent wall cav ity and sheath ingR-val ues in Ta ble 502.2.4.16(1) or 502.2.4.16(2), basedon the “on-cen ter” (o.c.) di men sion of the steel studs andthe re quired R-value for wood-framed walls de ter minedin ac cor dance with Sec tion 502.2.4, and uti liz ing anycom bi na tion of cav ity and sheath ing in su la tion set off bycom mas in Ta ble 502.2.4.16(1) or 502.2.4.16(2).

502.2.4.17 High-mass wall con struc tion. Ex te riorwalls con structed of high-mass ma te ri als hav ing heat ca -pac ity greater than or equal to 6 Btu/ ft2 ⋅ °F [1.06 kJ/(m2

⋅ K)] of ex te rior wall area shall meet the equiv a lent in su -la tion R-val ues in Ta ble 502.2.4.17(1) or 502.2.4.17(2),based on the place ment of the in su la tion, the HDD of thebuild ing lo ca tion, and the re quired R-value forwood-framed walls de ter mined in ac cor dance with Sec -tion 502.2.4.



TABLE 502.2.4.16(1)16-INCH O.C. STEEL-FRAMED WALL EQUIVALENT R-VALUES

WOOD-FRAMED WALL R-VALUE a

EQUIVALENT STEEL- FRAMED WALL CAVITY AND SHEATHING

R-VALUE

R-11 R-0+R-9, R-11+R-4, R-15+R-3, R-21+R-2

R-13 R-11+R-5, R-15+R-4, R-21+R-3

R-14 R-11+R-6, R-13+R-5, R-19+R-4

R-15 R-11+R-6, R-15+R-5, R-19+R-4

R-16 R-11+R-8, R-15+R-7, R-21+R-6

R-17 R-11+R-9, R-13+R-8, R-19+R-7

R-18 R-11+R-9, R-15+R-8, R-21+R-7

R-19 R-11+R-10, R-13+R-9, R-19+R-8, R-25+R-7

R-20 R-11+R-10, R-13+R-9, R-19+R-8

R-21 R-13+R-10, R-19+R-9, R-25+R-8

R-22 R-13+R-10, R-19+R-9

R-24 R-19+R-10, R-25+R-9

R-25 R-19+R-10

R-26 R-19+R-11, R-21+R-10

For SI: 1 inch = 25.4 mm.a. As re quired by Sec tion 502.2.4 and the tab u lar en try for “Ex te rior wall

R-value” shown in Ta bles 502.2.4(1) through 502.2.4(9), as ap pli ca ble.

TABLE 502.2.4.16(2)24-INCH O.C. STEEL FRAMED WALL EQUIVALENT R-VALUES

WOOD-FRAMED WALL R-VALUE a

EQUIVALENT STEEL- FRAMED WALL CAVITY AND SHEATHING

R-VALUE

R-11 R-0+R-9, R-11+R-3, R-15+R-2, R-25+R-0

R-13 R-11+R-4, R-15+R-3, R-19+R-2

R-14 R-11+R-5, R-13+R-4, R-15+R-3, R-21+R-2

R-15 R-11+R-5, R-13+R-4, R-19+R-3, R-21+R-2

R-16 R-11+R-7, R-13+R-6, R-19+R-5, R-25+R-4

R-17 R-11+R-8, R-13+R-7, R-15+R-6, R-21+R-5

R-18 R-11+R-8, R-13+R-7, R-19+R-6, R-25+R-5

R-19 R-11+R-9, R-13+R-8, R-15+R-7, R-21+R-6

R-20 R-11+R-9, R-13+R-8, R-19+R-7, R-21+R-6

R-21 R-11+R-9, R-15+R-8, R-21+R-7

R-22 R-11+R-10, R-13+R-9, R-19+R-8, R-21+R-7

R-24 R-11+R-10, R-15+R-9, R-19+R-8

R-25 R-13+R-10, R-19+R-9, R-21+R-8

R-26 R-15+R-10, R-19+R-9, R-25+R-8

For SI: 1 inch = 25.4 mm.a. As re quired by Sec tion 502.2.4 and the tab u lar en try for “Ex te rior wall

R-value” shown in Ta bles 502.2.4(1) through 502.2.4(9), as ap pli ca ble.



TABLE 502.2.4.17(1)HIGH-MASS WALL EQUIVALENT R-VALUES

INSULATION PLACED ON THE EXTERIOR OF THE WALLOR WITH INTEGRAL INSULATION

WOOD-FRAMEDWALL R-VALUEa

EQUIVALENT HIGH-MASS WALL R-VALUE

HDD 0 - 1,999 HDD 2,000 - 3,999 HDD 4,000 - 5,499 HDD 5,500 - 6,499 HDD 6,500 - 8,499 HDD ≥ 8,500

R-11 R-6 R-6 R-7 R-8 R-9 R-10

R-13 R-6 R-6 R-8 R-9 R-10 R-11

R-14 R-6 R-7 R-8 R-9 R-10 R-11

R-15 R-7 R-7 R-8 R-9 R-10 R-12

R-16 R-7 R-7 R-8 R-9 R-11 R-12

R-17 R-7 R-7 R-9 R-10 R-11 R-13

R-18 R-7 R-7 R-9 R-10 R-11 R-13

R-19 R-8 R-9 R-10 R-11 R-13 R-15

R-20 R-8 R-9 R-10 R-11 R-13 R-16

R-21 R-8 R-9 R-10 R-12 R-14 R-16

R-22 R-8 R-9 R-10 R-12 R-14 R-17

R-23 R-9 R-9 R-11 R-12 R-14 R-17

R-24 R-9 R-9 R-11 R-12 R-14 R-17

R-25 R-9 R-10 R-11 R-13 R-15 R-18

R-26 R-9 R-10 R-11 R-13 R-15 R-18

a. As re quired by Sec tion 502.2.4 and the tab u lar en try for “Ex te rior wall R-value” shown in Ta bles 502.2.4(1) through 502.2.4(9), as ap pli ca ble.

TABLE 502.2.4.17(2)HIGH-MASS WALL EQUIVALENT R-VALUES

INSULATION PLACED ON THE INTERIOR OF THE WALL

WOOD-FRAMEDWALL R-VALUEa

EQUIVALENT HIGH-MASS WALL R-VALUE

HDD 0 - 1,999 HDD 2,000 - 3,999 HDD 4,000 - 5,499 HDD 5,500 - 6,499 HDD 6,500 - 8,499 HDD ≥ 8,500

R-11 R-10 R-10 R-11 R-11 R-12 R-12

R-13 R-11 R-11 R-12 R-12 R-14 R-14

R-14 R-12 R-12 R-12 R-13 R-15 R-15

R-15 R-13 R-13 R-13 R-14 R-15 R-15

R-16 R-13 R-13 R-13 R-15 R-15 R-15

R-17 R-14 R-14 R-14 R-15 R-16 R-16

R-18 R-15 R-15 R-15 R-19 R-16 R-16

R-19 R-16 R-16 R-16 R-20 R-19 R-19

R-20 R-16 R-16 R-16 R-21 R-20 R-20

R-21 R-17 R-17 R-17 R-21 R-21 R-21

R-22 R-17 R-17 R-17 R-22 R-21 R-21

R-23 R-18 R-18 R-18 R-22 R-22 R-22

R-24 R-19 R-19 R-19 R-22 R-22 R-22

R-25 R-20 R-20 R-20 R-22 R-22 R-22

R-26 R-21 R-21 R-21 R-23 R-23 R-23

a. As re quired by Sec tion 502.2.4 and the tab u lar en try for “Ex te rior wall R-value” shown in Ta bles 502.2.4(1) through 502.2.4(9), as ap pli ca ble.

502.2.4.18 Steel-framed roof/ceil ing con struc tion.When truss-type, cold-formed steel fram ing is used inroof/ceil ing con struc tion, the roof/ceil ing as sem bly shall meet the equiv a lent in su la tion R-val ues in Ta ble502.2.4.18(1).

When C-shaped, cold-formed steel fram ing is used inroof/ceil ing con struc tion, the steel roof/ceil ing as sem blyshall meet the equiv a lent wood framed UR-fac tors in Ta -ble 502.2.4.18(2).

TABLE 502.2.4.18(1)TRUSS TYPE COLD-FORMED STEEL ROOF/CEILING

EQUIVALENT R-VALUESa

WOOD-FRAMEDROOF/CEILING

R-VALUEb

TRUSS TYPE COLD-FORMED STEELCAVITY AND CONTINUOUS INSULATION

R-VALUE, 24 INCHES ON CENTERc

R-13 R-19, R-13 + R-3

R-19 R-26, R-19 + R-3

R-26 R-38, R-26 + R-3

R-30 R-38, R-30 + R-3

R-38 R-49, R-38 + R-5

R-49 Not applicable

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.a. This ta ble ap plies to cold-formed, steel-truss roof fram ing spaced at 24

inches on cen ter and where the pen e tra tions of the truss mem bers throughthe cav ity in su la tion do not ex ceed three pen e tra tions of the truss mem bersthrough the cav ity in su la tion for each 4-foot length of the truss.

b. As re quired by Sec tion 502.2.4 and the tab u lar en try for “Ceil ing R-value”shown in Ta bles 502.2.4(1) through 502.2.4(9).

c. The cav ity R-value re quire ment is listed first, fol lowed by the con tin u ousin su la tion R-value re quire ment.

502.2.4.19 Steel-framed floor con struc tion. WhenC-shaped, cold-formed steel fram ing is used in floor con -struc tion, the steel floor as sem bly shall meet the equiv a -lent wood framed Uf-fac tors in Ta ble 502.2.4.19.

502.2.5 Pre scrip tive path for ad di tions and win dow re -place ments. As an al ter na tive to dem on strat ing com pli ance with Sec tion 402 or 502.2, ad di tions with a con di tionedfloor area less than 500 square feet (46.5 m2) to ex ist ing sin -gle-fam ily res i den tial build ings and struc tures shall meetthe pre scrip tive en ve lope com po nent cri te ria in Ta ble502.2.5 for the des ig nated heat ing de gree days (HDD) ap -pli ca ble to the lo ca tion. The U-fac tor of each in di vid ual fen -es tra tion prod uct (win dows, doors and sky lights) shall beused to cal cu late an area-weighted av er age fen es tra tionprod uct U-fac tor for the ad di tion, which shall not ex ceed the ap pli ca ble listed val ues in Ta ble 502.2.5. For ad di tions,other than sun room ad di tions, the to tal area of fen es tra tionprod ucts shall not ex ceed 40 per cent of the gross wall androof area of the ad di tion. The R-val ues for opaque ther malen ve lope com po nents shall be equal to or greater than theap pli ca ble listed val ues in Ta ble 502.2.5. Re place ment fen -es tra tion prod ucts (where some or all of an ex ist ing fen es tra -tion unit is re placed with an en tire new re place ment unit,

in clud ing the frame, sash and glaz ing) shall meet the pre -scrip tive fen es tra tion U-fac tor cri te ria in Ta ble 502.2.5 forthe des ig nated HDD ap pli ca ble to the lo ca tion.

Con di tioned sun room ad di tions shall main tain ther maliso la tion; shall not be used as kitch ens or sleep ing rooms;and shall be served by a sep a rate heat ing or cool ing sys tem,or be ther mo stat i cally con trolled as a sep a rate zone of theex ist ing sys tem.

Fen es tra tion prod ucts used in ad di tions and as re place -ment win dows in ac cor dance with this sec tion shall alsomeet the re quire ments of Sec tion 502.1.5 in lo ca tions withHDD less than 3,500.

Ex cep tion: Re place ment sky lights shall have a max i -mum U-fac tor of 0.60 when in stalled in any lo ca tionabove 1,999 HDD.

SECTION 503BUILDING MECHANICAL SYSTEMS

AND EQUIPMENT

503.1 Gen eral. This sec tion cov ers me chan i cal sys tems andequip ment used to pro vide heat ing, ven ti lat ing and air-con di -tion ing func tions. This sec tion as sumes that res i den tial build -ings and dwell ing units therein will be de signed with in di vid ual HVAC sys tems. Where equip ment not shown in Ta ble 503.2 isspec i fied, it shall meet the pro vi sions of Sec tions 803.2.2 and803.3.2.

503.2 Me chan i cal equip ment ef fi ciency. Equip ment shownin Ta ble 503.2 shall meet the spec i fied min i mum per for mance.Data fur nished by the equip ment sup plier, or cer ti fied un der ana tion ally rec og nized cer tif i ca tion pro ce dure, shall be used tosat isfy these re quire ments. All such equip ment shall be in -stalled in ac cor dance with the man u fac turer’s in struc tions.

503.3 HVAC sys tems. HVAC sys tems shall meet the cri te riaset forth in Sec tions 503.3.1 through 503.3.3.

[M] 503.3.1 Load cal cu la tions. Heating and cool ing sys -tem de sign loads for the pur pose of siz ing sys tems andequip ment shall be de ter mined in ac cor dance with the pro -ce dures de scribed in the ASHRAE Fun da men tals Hand -book. Heating and cool ing loads shall be ad justed to ac count for load re duc tions that are achieved when en ergy re cov erysys tems are uti lized in the HVAC sys tem in ac cor dance withthe ASHRAE HVAC Sys tems and Equip ment Hand book.Al ter na tively, de sign loads shall be de ter mined by an ap -proved equiv a lent com pu ta tion pro ce dure, us ing the de signpa ram e ters spec i fied in Chap ter 3.

503.3.2 Tem per a ture and hu mid ity con trols. Tem per a -ture and hu mid ity con trols shall be pro vided in ac cor dancewith Sec tions 503.3.2.1 through 503.3.2.4.

503.3.2.1 Sys tem con trols. Each dwell ing unit shall becon sid ered a zone and be pro vided with ther mo staticcon trols re spond ing to tem per a ture within the dwell ingunit. Each heat ing and cool ing sys tem shall in clude atleast one tem per a ture con trol de vice.





TABLE 502.2.4.19C-SHAPED COLD-FORMED STEEL FLOOR EQUIVALENT Uf-FACTORSa

FRAMING b SPACING R-11c R-13c R-15c R-19c R-21c R-25c R-30

16 incheso.c.

0.0725 0.0652 0.0595 0.0477 0.0452 0.0382 0.0327

2 × 6 0.1058 0.1031 0.1005 0.0583 0.0523 NA NA

2 × 8 0.1058 0.1031 0.1005 0.0957 0.0935 0.0548 NA

2 × 10 0.1058 0.1031 0.1005 0.0957 0.0935 0.0894 0.0838

2 × 12 0.1058 0.1031 0.1005 0.0957 0.0935 0.0894 0.0838

24 incheso.c.

0.0708 0.0633 0.0574 0.0464 0.0436 0.0370 0.0317

2 × 6 0.0941 0.0907 0.0875 0.0538 0.0486 NA NA

2 × 8 0.0941 0.0907 0.0875 0.0818 0.0792 0.0488 NA

2 × 10 0.0941 0.0907 0.0875 0.0818 0.0792 0.0745 0.0697

2 × 12 0.0941 0.0907 0.0875 0.0818 0.0792 0.0745 0.0697

For SI: 1 inch = 25.4 mm.NA = Not ap pli ca ble.a. Lin ear in ter po la tion is per mit ted for de ter min ing U-fac tors which are be tween those given in the ta ble.b. Ap plies to steel fram ing up to a max i mum thick ness of 0.064 inches (16 gage.)c. As re quired by Sec tion 502.2.4 and the tab u lar en try for “Floor R-value” shown in Ta bles 502.2.4(1) through 502.2.4(9), as ap pli ca ble.

TABLE 502.2.4.18(2)C-SHAPED COLD-FORMED STEEL ROOF/CEILING EQUIVALENT UR-FACTORSa

FRAMING b SPACING R-13c R-19c R-26c R-30c R-38c R-49c

16 inches o.c.

0.0773 0.0537 0.0405 0.0355 0.0285 0.0223

2 × 4 0.1328 0.0530 0.0387 0.0336 0.0265 0.0206

2 × 6 0.1328 0.0667 0.0456 0.0386 0.0295 0.0223

2 × 8 0.1328 0.1208 0.0585 0.0475 0.0345 0.0251

2 × 10 0.1328 0.1208 0.1094 0.1037 0.0398 0.0277

2 × 12 0.1328 0.1208 0.1094 0.1037 0.0471 0.0311

24 inches o.c.

0.0742 0.0519 0.0390 0.0342 0.0274 0.0215

2 × 4 0.1129 0.0510 0.0376 0.0327 0.0260 0.0202

2 × 6 0.1129 0.0610 0.0428 0.0366 0.0284 0.0216

2 × 8 0.1129 0.0994 0.0517 0.0429 0.0320 0.0237

2 × 10 0.1129 0.0994 0.0873 0.0816 0.0357 0.0257

2 × 12 0.1129 0.0994 0.0873 0.0816 0.0403 0.0280

For SI: 1 inch = 25.4 mm.a. Lin ear in ter po la tion is per mit ted for de ter min ing U-fac tors which are be tween those given in the ta ble.b. Ap plies to steel fram ing up to a max i mum thick ness of 0.064 inches (16 gage.)c. As re quired by Sec tion 502.2.4 and the tab u lar en try for “Ceil ing R-value” shown in Ta bles 502.2.4(1) through 502.2.4(9), as applicable.

Steel Wood Equivalent

Steel

Steel

Steel

Wood Equivalent

Wood Equivalent

Wood Equivalent

503.3.2.2 Ther mo static con trol ca pa bil i ties. Whereused to con trol com fort heat ing, ther mo static con trolsshall be ca pa ble of be ing set lo cally or re motely by ad -just ment or se lec tion of sen sors down to 55°F (13°C) orlower.

Where used to con trol com fort cool ing, ther mo staticcon trols shall be ca pa ble of be ing set lo cally or re motelyby ad just ment or se lec tion of sen sors up to 85°F (29°C)or higher.

Where used to con trol both com fort heat ing and cool -ing, ther mo static con trols shall be ca pa ble of pro vid ing atem per a ture range or deadband of at least 5°F (∆3°C)

within which the sup ply of heat ing and cool ing en ergy isshut off or re duced to a min i mum.

Ex cep tions:

1. Spe cial oc cu pancy or spe cial us age con di tionsap proved by the code of fi cial.

2. Ther mo stats that re quire man ual change overbe tween heat ing and cool ing modes.

503.3.2.3 Heat pump aux il iary heat. Heat pumps hav -ing sup ple men tary elec tric re sis tance heat ers shall havecon trols that pre vent heater op er a tion when the heat ingload is ca pa ble of be ing met by the heat pump. Sup ple -men tal heater op er a tion is not al lowed ex cept dur ing out -door coil de frost cy cles not ex ceed ing 15 min utes.



TABLE 502.2.5PRESCRIPTIVE ENVELOPE COMPONENT CRITERIA

ADDITIONS TO AND REPLACEMENT WINDOWS FOR EXISTING DETACHED ONE- AND TWO-FAMILY DWELLINGS

HEATINGDEGREE DAYS

MAXIMUM MINIMUM

FenestrationU-factore

CeilingR-valuea,e Wall R-valuee Floor R-value

Basement wallR-valueb

Slab perimeterR-value and

depthc

Crawl spacewall

R-valued

0 - 1,9992,000 - 3,9994,000 - 5,9996,000 - 8,499

8,500 - 12,999

0.75 0.50 0.40 0.35 0.35

R-26R-30R-38R-49R-49

R-13R-13R-18R-21R-21

R-11R-19R-21R-21R-21

R-5R-8

R-10R-11R-19

R-0R-5, 2 ft.R-9, 2 ft.

R-13, 4 ft.R-18, 4 ft.

R-5R-10R-19R-20R-20

For SI: 1 foot = 304.8 mm.a. “Ceil ing R-value” shall be re quired for flat or in clined (ca the dral) ceil ings. Floors over out side air shall meet “Ceil ing R-value” re quire ments.b. Base ment wall in su la tion shall be in stalled in ac cor dance with Sec tion 502.2.1.6.c. Slab per im e ter in su la tion shall be in stalled in ac cor dance with Sec tion 502.2.1.4. An ad di tional R-2 shall be added to “Slab per im e ter R-value” in the ta ble if

the slab is heated.d. “Crawl space wall R-value” shall ap ply to un ven ti lated crawl spaces only. Crawl space in su la tion shall be in stalled in ac cor dance with Sec tion 502.2.1.5.e. Sun room ad di tions shall be re quired to have a max i mum fen es tra tion U-fac tor of 0.50 in lo ca tions with 2,000 - 12,999 HDD. In lo ca tions with 0-5,999 HDD,

the min i mum ceil ing R-value shall be R-19 and the min i mum wall R-value shall be R-13. In lo ca tions with 6,000 - 12,999 HDD, the min i mum ceil ing R-valueshall be R-24 and the min i mum wall R-value shall be R-13.

TABLE 503.2MINIMUM EQUIPMENT PERFORMANCE

EQUIPMENTCATEGORY SUBCATEGORYe REFERENCED STANDARD MINIMUM PERFORMANCE

Air-cooled heat pumps, Heating mode < 65,000 Btu/h cooling capacity

Split systems

Single packageARI 210/240

6.8 HSPFa,b

6.6 HSPFa,b

Gas-fired or oil-fired furnace < 225,000 Btu/h —DOE 10 CFR Part 430,Subpart B, Appendix N

AFUE 78%b

Et 80%c

Gas-fired or oil-fired steam and hot-water boilers< 300,000 Btu/h

—DOE 10 CFR Part 430,Subpart B, Appendix N

AFUE 80%b,d

Air-cooled air conditioners and heat pumps, Cooling mode <65,000 Btu/h cooling capacity

Split systems

Single packageARI 210/240

10.0 SEERb

9.7 SEERb

For SI: 1 British thermal unit per hour = 0.2931 W.a. For multicapacity equip ment, the min i mum per for mance shall ap ply to each ca pac ity step pro vided. Multicapacity re fers to man u fac turer-pub lished rat ings

for more than one ca pac ity mode al lowed by the prod uct’s con trols.b. This is used to be con sis tent with the Na tional Ap pli ance En ergy Con ser va tion Act (NAECA) of 1987 (Pub lic Law 100-12).c. These re quire ments ap ply to com bi na tion units not cov ered by NAECA (three-phase power or cool ing ca pac ity 65,000 Btu/h).d. Ex cept for gas-fired steam boil ers for which the min i mum AFUE shall be 75 per cent.e. Sea sonal rat ing.

503.3.2.4 Humidistat. Humidistats used for com fortpur poses shall be ca pa ble of be ing set to pre vent the useof fos sil fuel or elec tric ity to re duce rel a tive hu mid ity be -low 60 per cent or in crease rel a tive hu mid ity above 30per cent.

503.3.3 Dis tri bu tion sys tem, con struc tion and in su la -tion. Dis tri bu tion sys tems shall be con structed and in su -lated in ac cor dance with Sec tions 503.3.3.1 through503.3.3.7.

503.3.3.1 Pip ing in su la tion. All HVAC sys tem pip ingshall be ther mally in su lated in ac cor dance with Ta ble503.3.3.1.

Ex cep tions:

1. Fac tory-in stalled pip ing within HVAC equip -ment tested and rated in ac cor dance with Sec -tion 503.2.

2. Pip ing that con veys flu ids which have a de signop er at ing tem per a ture range be tween 55°F and105°F (13°C and 41°C).

3. Pip ing that con veys flu ids which have not beenheated or cooled through the use of fos sil fu elsor elec tric ity.

503.3.3.2 Other in su la tion thick nesses. In su la tionthick nesses in Ta ble 503.3.3.1 are based on in su la tionhav ing ther mal re sis tiv ity in the range of 4.0 to 4.6h ⋅ ft2 ⋅ °F/Btu/inch (0.704 to 0.810 m2 ⋅ K/W per 25mm) of thick ness on a flat sur face at a mean tem per a tureof 75°F (24°C).

Min i mum in su la tion thick ness shall be in creased forma te ri als hav ing val ues less than 4.0, or shall be per mit -ted to be re duced for ma te ri als hav ing ther mal re sis tiv ity

val ues greater than 4.6 in ac cor dance with Equa tion5-15.

4.6 Table503.3.3.1 Thickness

Actual Resistivity

New×= Minumum

Thickness

(Equa tion 5-15)

For ma te ri als with ther mal re sis tiv ity val ues less than4.0, the min i mum in su la tion thick ness shall be per mit tedto be in creased in ac cor dance with Equa tion 5-16.

4.0 Table503.3.3.1Thickness

Actual Resistivity

Ne×=

wMinumumThickness

(Equa tion 5-16)

503.3.3.3 Duct and ple num in su la tion. All sup ply andre turn-air ducts and ple nums in stalled as part of anHVAC air-dis tri bu tion sys tem shall be ther mally in su -lated in ac cor dance with Ta ble 503.3.3.3, or where suchducts or ple nums op er ate at static pres sures greater than 2 inches w.g. (500 Pa), in ac cor dance with Sec tion503.3.3.4.1.

Ex cep tions:

1. Fac tory-in stalled ple nums, cas ings or ductwork fur nished as a part of the HVAC equip menttested and rated in ac cor dance with Sec tion503.2.

2. Ducts within the con di tioned space that theyserve.

[M] 503.3.3.4 Duct con struc tion. Ductwork shall becon structed and erected in ac cor dance with the In ter na -tional Me chan i cal Code.



TABLE 503.3.3.1MINIMUM PIPE INSULATION

(thickness in inches)

PIPING SYSTEM TYPES

FLUIDTEMPERATURE

RANGE, EF

PIPE SIZESa

Runoutsup to 2″b 1″ and less 1.25″ to 2″ 2.5″ to 4″ 5″ to 6″ 8″ and larger

HEATING SYSTEMS

Steam and hot water

High pressure/temperature 306-450 11/2 21/2 21/2 3 31/2 31/2

Medium pressure/temperature 251-305 11/2 2 21/2 21/2 3 3

Low pressure/temperature 201-250 1 11/2 11/2 2 2 2

Low temperature 106-200 1/2 1 1 11/2 11/2 11/2

Steam condensate (for feed water) Any 1 1 11/2 2 2 2

COOLING SYSTEMS

Chilled water, refrigerant and brine40-55 1/2

1/23/4 1 1 1

Below 40 1 1 11/2 11/2 11/2 11/2

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, EC = [(EF)-32]/1.8.a. For pip ing ex posed to out door air, in crease in su la tion thick ness by 0.5 inch.b. Runouts not ex ceed ing 12 feet in length to in di vid ual ter mi nal units.

503.3.3.4.1 High-and me dium-pres sure duct sys -tems. All ducts and ple nums op er at ing at static pres -sures greater than 2 inches w.g. (500 Pa) shall bein su lated and sealed in ac cor dance with Sec tion803.2.8. Ducts op er at ing at static pres sures in ex cessof 3 inches w.g. (750 Pa) shall be leak tested in ac cor -dance with Sec tion 803.3.6. Pres sure clas si fi ca tionsspe cific to the duct sys tem shall be clearly in di catedon the con struc tion doc u ments in ac cor dance with theIn ter na tional Me chan i cal Code.

503.3.3.4.2 Low-pres sure duct sys tems. All lon gi -tu di nal and trans verse joints, seams and con nec tionsof sup ply and re turn ducts op er at ing at static pres sures less than or equal to 2 inches w.g. (500 Pa) shall be se -curely fas tened and sealed with welds, gas kets,mastics (ad he sives), mastic-plus-em bed ded-fab ricsys tems or tapes in stalled in ac cor dance with the man -u fac turer’s in stal la tion in struc tions. Pres sure clas si fi -ca tions spe cific to the duct sys tem shall be clearlyin di cated on the con struc tion doc u ments in ac cor -dance with the In ter na tional Me chan i cal Code.

Ex cep tion: Con tin u ously welded and lock -ing-type lon gi tu di nal joints and seams on ducts op -er at ing at static pres sures less than 2 inches w.g.(500 Pa) pres sure clas si fi ca tion.

503.3.3.4.3 Sealing re quired. All joints, lon gi tu di nal and trans verse seams, and con nec tions in ductwork,shall be se curely fas tened and sealed with welds, gas -kets, mastics (ad he sives), mas tic-plus-em bed -ded-fab ric sys tems or tapes. Tapes and mastics used to seal ductwork shall be listed and la beled in ac cor -dance with UL 181A or UL 181B. Duct con nec tionsto flanges of air dis tri bu tion sys tem equip ment shallbe sealed and me chan i cally fas tened. Un listed ducttape is not per mit ted as a seal ant on any metal ducts.

503.3.3.5 Me chan i cal ven ti la tion. Each me chan i calven ti la tion sys tem (sup ply or ex haust, or both) shall beequipped with a readily ac ces si ble switch or other meansfor shut off, or vol ume re duc tion and shut off, when ven ti -la tion is not re quired. Au to matic or grav ity damp ers thatclose when the sys tem is not op er at ing shall be pro videdfor out door air in takes and ex hausts.

503.3.3.6 Trans port en ergy. The air trans port fac tor foreach all-air sys tem shall be not less than 5.5 when cal cu -lated in ac cor dance with Equa tion 5-17. En ergy fortrans fer of air through heat-re cov ery de vices shall not bein cluded in de ter min ing the air trans port fac tor.

Air Transport Factor SpaceSensibleHeat Removal a

=Supply Return Fans(s) Power Inputa+

(Equa tion 5-17)a. Ex pressed in con sis tent units, ei ther Btu/h or Watts.

For pur poses of these cal cu la tions, space sen si ble heatre moval is equiv a lent to the max i mum co in ci dent de signsen si ble cool ing load of all spaces served for which thesys tem pro vides cool ing. Fan power in put is the rate ofen ergy de liv ered to the fan prime mover. Air and wa ter, all-wa ter and uni tary sys tems em ploy -ing chilled, hot, dual-tem per a ture or con denser wa -ter-trans port sys tems to space ter mi nals shall not re quiregreater trans port en ergy (in clud ing cen tral and ter mi nalfan power and pump power) than an equiv a lent all-airsys tem pro vid ing the same space sen si ble heat re movaland hav ing an air trans port fac tor of not less than 5.5.

503.3.3.7 Bal ancing. The HVAC sys tem de sign shallpro vide means for bal anc ing air and wa ter sys tems. Bal -ancing mech a nisms shall in clude, but not be lim ited to,damp ers, tem per a ture and pres sure test con nec tions, andbal anc ing valves.



TABLE 503.3.3.3MINIMUM DUCT INSULATIONa

ANNUAL HEATING DEGREE DAYS

INSULATION R-VALUE (h ⋅ ft2 ⋅ °F.)/Btud

Ducts in unconditioned attics or outsidebuilding

Ducts in unconditioned basements, crawl spaces,garages, and other unconditioned spacesc

Supply Return Supply Returnb

< 1,500 8 4 4 0

1,500 to 3,500 8 4 6 2

3,501 to 7,500 8 4 8 2

> 7,500 11 6 11 2

For SI: EC= [(EF)-32]/1.8, 1 (h·ft2·EF)/Btu= 0.176 (m2·K)/W, 1 foot= 304.5 mm.a. In su la tion R-val ues shown are for the in su la tion as in stalled and do not in clude film re sis tance. The re quired min i mum R-val ues do not con sider wa ter va por

trans mis sion and con den sa tion. Where con trol of con den sa tion is re quired, ad di tional in su la tion, va por re tard ers or both shall be pro vided to limit va por trans -mis sion and con den sa tion. For ducts that are de signed to con vey both heated and cooled air, duct in su la tion shall be as re quired by the most re stric tive con di -tion. Where ex te rior walls are used as ple nums, wall in su la tion shall be as re quired by the most re stric tive con di tion of this sec tion.

b. In su la tion on re turn ducts in base ments is not re quired.c. Un con di tioned spaces in clude ven ti lated crawl spaces and framed cav i ties in those floors, wall and ceil ing as sem blies which sep a rate con di tioned space from

un con di tioned space or out side air, and are un in su lat ed on the side fac ing away from the con di tion space.d. In su la tion re sis tance mea sured on a hor i zon tal plane in ac cor dance with ASTM C 518, at a mean tem per a ture of 75EF.

SECTION 504SERVICE WATER HEATING

504.1 Scope. The pur pose of this sec tion is to pro vide cri te riafor de sign and equip ment se lec tion that will pro duce en ergysav ings when ap plied to ser vice wa ter heat ing. Wa ter sup pliesto ice-mak ing ma chines and re frig er a tors shall be taken from acold-wa ter line of the wa ter dis tri bu tion sys tem.

504.2 Wa ter heat ers, stor age tanks and boil ers. Wa ter heat -ers, stor age tanks and boil ers shall meet the per for mance cri te -ria set forth in Sec tions 504.2.1 and 504.2.2.

504.2.1 Per for mance ef fi ciency. Wa ter heat ers and hot wa -ter stor age tanks shall meet the min i mum per for mance ofwa ter-heat ing equip ment spec i fied in Ta ble 504.2.1. Wheremul ti ple cri te ria are listed, all cri te ria shall be met.

Ex cep tion: Stor age wa ter heat ers and hot wa ter stor agetanks hav ing more than 140 gal lons (530 L) of stor age ca -pac ity need not meet the standby loss (SL) or heat loss(HL) re quire ments of Ta ble 504.2.1 if the tank sur facearea is ther mally in su lated to R-12.5 and if a stand ing pi -lot light is not used.



TABLE 504.2.1MINIMUM PERFORMANCE OF WATER-HEATING EQUIPMENT

CATEGORY TYPE FUELINPUT

RATINGVT

a

(gallons)

INPUT TOVT

RATIO(Btuh/gal)

TESTMETHOD

ENERGYFACTORb

THERMALEFFICIENCY

Et(percent)

STANDBYLOSS

(percent/hour)a

NAECA-coveredwater-heatingequipmentc

All Electric ≤ 12kW Alle — Note f ≥ 0.93-0.00132V* — —

Storage Gas ≤ 75,000 Btu/h Alle — Note f ≥ 0.62-0.0019V* — —

Instantaneous Gas ≤ 200,000 Btu/he All — Note f ≥ 0.62-0.0019V* — —

Storage Oil ≤ 105,000 Btu/h All — Note f ≥ 0.59-0.0019V* — —

Instantaneous Oil ≤ 210,000 Btu/h All — Note f ≥ 0.59-0.0019V* — —

Pool heater Gas/oil All All — Note g — ≥ 78% —

Otherwater-heatingequipmentd

Storage Electric All all — Note h — — ≤ 0.30+27/VT*

Storage/instantaneous Gas/oil

≤ 155,000 Btu/h> 155,000 Btu/h

All < 4,000 Note h — ≥ 78% ≤ 1.3+114/VT*

All < 4,000 Note h — ≥ 78% ≤ 1.3+95/VT*

< 10≥ 10

≥ 4,000≥ 4,000

Note h —≥ 80%≥ 77%

—≤ 2.3+67/VT*

Unfiredstorage tanks

— — — All — — — — ≤ 6.5 Btuh/ft2 i*

For SI: 1 British thermal unit per square foot = 3.155 W/m2, 1 British thermal unit per hour = 0.2931 W, 1 gallon = 3.785 L, EC = [(EF)-32]/1.8.a. VT is the stor age vol ume in gal lons as mea sured dur ing the standby loss test. For the pur pose of es ti mat ing the standby loss re quire ment us ing the rated vol ume

shown on the rat ing plate, VT should be no less than 0.95V for gas and oil wa ter heat ers and no less than 0.90V for elec tric wa ter heat ers.b. V is rated stor age vol ume in gal lons as spec i fied by the man u fac turer.c. Con sis tent with Na tional Ap pli ance En ergy Con ser va tion Act (NAECA) of 1987.d. All ex cept those wa ter heat ers cov ered by NAECA.e. DOE CFR 10; Part 430, Subpart B, Ap pen dix E ap plies to elec tric and gas stor age wa ter heat ers with rated vol umes 20 gal lons and gas in stan ta neous wa ter

heat ers with in put rat ings of 50,000 to 200,000 Btu/h.f. DOE CFR 10; Part 430, Subpart B, Ap pen dix E.g. ANSI Z21.56.h. ANSI Z21.10.3. When test ing an elec tric stor age wa ter heater for standby loss us ing the test pro ce dure of Sec tion 2.9 of ANSI Z21.10.3, the elec tri cal sup ply

volt age shall be main tained within ± 1 per cent of the cen ter of the volt age range spec i fied on the wa ter heater name plate. Also, when needed for cal cu la tions,the ther mal ef fi ciency (Et) shall be 98 per cent. When test ing an oil wa ter heater us ing the test pro ce dures of Sec tions 2.8 and 2.9 of ANSI Z21.10.3, the fol low -ing mod i fi ca tions will be made: A ver ti cal length of the flue pipe shall be con nected to the flue gas out let of suf fi cient height to es tab lish the min i mum draftspec i fied in the man u fac turer’s in stal la tion in struc tions. All mea sure ments of oil con sump tion will be taken by in stru ments with an ac cu racy of ± 1 per cent orbetter. The burner shall be ad justed to achieve an hourly Btu in put rate within ± 2 per cent of the man u fac turer’s spec i fied in put rate with the CO2 read ing asspec i fied by the man u fac turer with smoke no greater than 1 and the fuel pump pres sure within ± 1 per cent of the man u fac turer’s spec i fi ca tion.

i. Heat loss of tank sur face area (Btu/h @ ft2) based on 80EF wa ter-air tem per a ture dif fer ence.*Min i mum ef fi cien cies marked with an as ter isk are es tab lished by pre emp tive fed eral law and are printed for the con ve nience of the user.

504.2.2 Com bi na tion ser vice wa ter-heat ing/space-heat -ing boil ers. Ser vice wa ter-heat ing equip ment shall not bede pend ent on year-round op er a tion of space-heat ing boil -ers; that is, boil ers that have as an other func tion win ter space heat ing.

Ex cep tions:

1. Sys tems with ser vice/space-heat ing boil ers hav ing a standby loss (Btu/h) (W) less than that cal cu latedin equa tion 5-18:

( )SL ≤

⋅ +133 400. pmd

n(Equa tion 5-18)

as determined by the fixture count method where:

pmd = Probable maximum demand ingallons/hour as determined in accordancewith the ASHRAE HVAC ApplicationsHandbook.

n = Fraction of year when outdoor dailymean temperature exceeds 64.9°F (18°C).

The standby loss is to be de ter mined for a test pe -riod of 24-hour du ra tion while main tain ing a boiler wa ter tem per a ture of 90°F (32°C) above an am bi -ent of 60 to 90°F (16 to 32°C) and a 5-foot (1524mm) stack on ap pli ance.

2. For sys tems where the use of a sin gle heat ing unitwill lead to en ergy sav ings, such unit shall be uti -lized.

504.3 Swimming pools. Swimming pools shall be pro videdwith en ergy-con serv ing mea sures in ac cor dance with Sec tions504.3.1 through 504.3.3.

504.3.1 On-off switch. All pool heat ers shall be equippedwith an ON-OFF switch mounted for easy ac cess to al lowshut ting off the op er a tion of the heater with out ad just ing thether mo stat set ting and to al low re start ing with out relightingthe pi lot light.

504.3.2 Pool cov ers. Heated swim ming pools shall beequipped with a pool cover.

Ex cep tion: Out door pools de riv ing more than 20 per cent of the en ergy for heat ing from re new able sources (com -puted over an op er at ing sea son) are ex empt from this re -quire ment.

504.3.3 Time clocks. Time clocks shall be in stalled so thatthe pump can be set to run in the off-peak elec tric de mandpe riod and can be set for the min i mum time nec es sary tomain tain the wa ter in a clear and san i tary con di tion in keep -ing with ap pli ca ble health stan dards.

504.4 Hot wa ter sys tem con trols. Au to matic-cir cu lat ing hotwa ter sys tem pumps or heat trace shall be ar ranged to be con ve -niently turned off, au to mat i cally or man u ally, when the hot wa -ter sys tem is not in op er a tion.

504.5 Pipe in su la tion. For au to matic-cir cu lat ing hot wa tersys tems, pip ing heat loss shall be lim ited to a max i mum of 17.5Btu/h per lin ear foot (16.8 W/m) of pipe in ac cor dance with Ta -ble 504.5, which is based on de sign ex ter nal tem per a ture nolower than 65ºF (18ºC). For ex ter nal de sign tem per a tures lower

than 65EF (18EC) in su la tion thick ness must be cal cu lated in ac -cor dance with Sec tion 503.3.3.2.

Ex cep tion: Pip ing in su la tion is not re quired when the heatloss of the pip ing, with out in su la tion, does not in crease thean nual en ergy re quire ments of the build ing.

TABLE 504.5MINIMUM PIPE INSULATION


SERVICE WATER-HEATING

TEMPERATURES(°F)

PIPE SIZESa

Noncirculating runouts Circulating mains and runouts

Up to 1″ Up to 1.25″ 1.5″ to 2″ Over 2″

170 -180 1/2 1 11/2 2

140 -169 1/21/2 1 11/2

100 -139 1/21/2 1/2 1

For SI: 1 inch = 25.4 mm, °C = [(°F)-32]/1.8,1 Btuh/inch ⋅ ft2 ⋅ °F = 0.144 W/(m ⋅ K).a. Nom i nal iron pipe size and in su la tion thick ness. Con duc tiv ity, k = 0.27.

504.6 Con ser va tion of hot wa ter. Hot wa ter shall be con -served in ac cor dance with Sec tion 504.6.1.

504.6.1 Showers. Shower heads shall have a max i mumflow rate of 2.5 gal lons per min ute (gpm) (0.158 L/s) at apres sure of 80 pounds per square inch (psi) (551 kPa) whentested in ac cor dance with ASME A112.18.1.

504.7 Heat traps. Wa ter heat ers with ver ti cal pipe ris ers shallhave a heat trap on both the in let and out let of the wa ter heaterun less the wa ter heater has an in te gral heat trap or is part of acir cu lat ing sys tem.

SECTION 505ELECTRICAL POWER AND LIGHTING

505.1 Elec tri cal en ergy con sump tion. In res i den tial build -ings hav ing in di vid ual dwell ing units, pro vi sions shall be made to de ter mine the elec tri cal en ergy con sumed by each ten ant bysep a rately me ter ing in di vid ual dwell ing units.

505.2 Lighting power bud get. The light ing sys tem shall meetthe ap pli ca ble pro vi sions of Sec tion 805.

Ex cep tion: De tached one- and two- fam ily dwell ings andtown houses and the dwell ing por tion of Group R-2 and R-4res i den tial build ings.



CHAPTER 6

SIMPLIFIED PRESCRIPTIVE REQUIREMENTS FOR DETACHEDONE- AND TWO-FAMILY DWELLINGS AND GROUP R-2, R-4 OR

TOWNHOUSE RESIDENTIAL BUILDINGS

SECTION 601GENERAL

601.1 Scope. This chap ter sets forth en ergy-ef fi ciency-re latedre quire ments for the de sign and con struc tion of de tached one-and two-fam ily dwell ings and Group R-2, R-4 or town houseres i den tial build ings.

Ex cep tion: Por tions of the build ing en ve lope that do not en -close con di tioned space.

601.2 Com pli ance. Com pli ance shall be dem on strated in ac -cor dance with Sec tion 601.2.1 or 601.2.2.

601.2.1 Res i den tial build ings, de tached one- and two-fam ily dwell ings. Com pli ance for de tached one- andtwo-fam ily dwell ings shall be dem on strated by ei ther:

1. Meet ing the re quire ments of this chap ter for build ings with a glaz ing area that does not ex ceed 15 per cent ofthe gross area of ex te rior walls; or

2. Meet ing the re quire ments of Chap ter 4, or Chap ter 5for de tached one- and two-fam ily dwell ings.

601.2.2 Res i den tial build ings, Groups R-2, R-4 or town -houses. Com pli ance for Group R-2, R-4 or town house res i -den tial build ings shall be dem on strated by ei ther:

1. Meet ing the re quire ments of this chap ter for build ings with a glaz ing area that does not ex ceed 25 per cent ofthe gross area of ex te rior walls; or

2. Meet ing the re quire ments of Chap ter 4, or Chap ter 5for Group R-2, R-4 or town house res i den tial build -ings.

601.3 Ma te rials and equip ment. Ma te rials and equip mentshall be iden ti fied in a man ner that will al low a de ter mi na tion of their com pli ance with the ap pli ca ble pro vi sions of this chap ter.Ma te rials and equip ment used to con form to the ap pli ca ble pro -vi sions of this chap ter shall be in stalled in ac cor dance with theman u fac turer’s in stal la tion in struc tions.

601.3.1 In su la tion. The ther mal re sis tance (R-value) shallbe in di cated on all in su la tion and the in su la tion in stalledsuch that the R-value can be ver i fied dur ing in spec tion, or acer tif i ca tion of the in stalled R-value shall be pro vided at thejob site by the in su la tion in staller. Where blown-in orsprayed in su la tion is ap plied in walls, the in staller shall pro -vide a cer tif i ca tion of the in stalled den sity and R-value.Where blown-in or sprayed in su la tion is ap plied in theroof/ceil ing as sem bly, the in staller shall pro vide a cer tif i ca -tion of the ini tial in stalled thick ness, set tled thick ness, cov -er age area, and num ber of bags of in su lat ing ma te rialin stalled. Markers shall be pro vided for ev ery 300 squarefeet (28 m2) of area, at tached to the trusses, raf ters or joists,

and in di cate in 1-inch-high (25 mm) num bers the in stalledthick ness of the in su la tion.

601.3.2 Fen es tra tion. The U-fac tor of fen es tra tion shall bede ter mined in ac cor dance with NFRC 100 by an ac cred ited,in de pend ent lab o ra tory, and la beled and cer ti fied by theman u fac turer. The so lar heat gain co ef fi cient (SHGC) offen es tra tion shall be de ter mined in ac cor dance with NFRC200 by an ac cred ited, in de pend ent lab o ra tory, and la beledand cer ti fied by the man u fac turer.

601.3.2.1 De fault fen es tra tion per for mance. Where aman u fac turer has not de ter mined a fen es tra tion prod -uct’s U-fac tor in ac cor dance with NFRC 100, com pli -ance shall be de ter mined by as sign ing such prod ucts ade fault U-fac tor from Ta bles 102.5.2(1) and 102.5.2(2).When a man u fac turer has not de ter mined a fen es tra tionprod uct’s SHGC in ac cor dance with NFRC 200, com pli -ance shall be de ter mined by as sign ing such prod ucts ade fault SHGC from Ta ble 102.5.2(3).

601.3.2.2 Air leak age. The air leak age of pre fab ri catedfen es tra tion shall be de ter mined in ac cor dance withAAMA/WDMA 101/I.S.2 or NFRC 400 by an ac cred -ited, in de pend ent lab o ra tory, and la beled and cer ti fied by the man u fac turer and shall not ex ceed the val ues in Ta ble502.1.4.1. Al ter na tively, the man u fac turer shall cer tifythat the fen es tra tion is in stalled in ac cor dance with Sec -tion 502.1.4.

601.3.3 Main te nance. Where me chan i cal or plumb ing sys -tem com po nents re quire pre ven tive main te nance for ef fi -cient op er a tion, reg u lar main te nance re quire ments shall beclearly stated and af fixed to the com po nent, or the source for such in for ma tion shall be shown on a la bel at tached to thecom po nent.

SECTION 602BUILDING ENVELOPE

602.1 Ther mal per for mance cri te ria. The min i mum re quired in su la tion R-value or the area-weighted av er age max i mum re -quired fen es tra tion U-fac tor (other than opaque doors whichare gov erned by Sec tion 602.1.3) for each el e ment in the build -ing ther mal en ve lope (fen es tra tion, roof/ceil ing, opaque wall,floor, slab edge, crawl space wall and base ment wall) shall be in ac cor dance with the cri te ria in Ta ble 602.1.

The build ing en ve lope re quire ments of Chap ter 4 or 5 shallbe used to de ter mine com pli ance with detached one- andtwo-fam ily dwell ings with greater than 15-per cent glaz ingarea; Group R-2, R-4 or town house res i den tial build ings withgreater than 25-per cent glaz ing area; and any res i den tial build -ing in cli mates with heat ing de gree days (HDD) equal to orgreater than 13,000.


602.1.1 Ex te rior walls. The sum of the R-val ues of the in su -la tion ma te ri als in stalled in fram ing cav i ties and in su lat ingsheath ing (where used) shall meet or ex ceed the min i mumre quired “Wall R-value” in Ta ble 602.1. Framing, dry wall,struc tural sheath ing or ex te rior sid ing ma te ri als shall not becon sid ered as con trib ut ing, in any way, to the ther mal per -for mance of ex te rior walls. In su la tion sep a rated from thecon di tioned space by a vented space shall not be counted to -wards the re quired R-value.

602.1.1.1 Mass walls. Mass walls shall be per mit ted tomeet the cri te ria in Ta ble 602.1.1.1(1) based on the in su -la tion po si tion and the cli mate zone where the build ing islo cated. Other mass walls shall meet the frame wall cri te -ria for the build ing type and the cli mate zone where thebuild ing is lo cated, based on the sum of in te rior and ex te -rior in su la tion. Walls with “ex te rior in su la tion” po si tionhave the en tire ef fec tive mass layer in te rior to an in su la -tion layer. Walls with “in te gral in su la tion” po si tion haveei ther in su la tion and mass ma te ri als well mixed as inwood (logs); or sub stan tially equal amounts of mass ma -te rial on the in te rior and ex te rior of in su la tion as in con -crete ma sonry units with in su lated cores or ma sonrycav ity walls. Walls with in te rior in su la tion po si tion havethe mass ma te rial lo cated ex te rior to the in su lat ing ma te -rial(s). Walls not meet ing the above de scrip tions for ex te -rior or in te gral po si tions shall meet the re quire ments for

“other mass walls” in Ta ble 602.1.1.1(1). The R-value ofthe mass as sem bly for typ i cal ma sonry con struc tion shall be taken from Ta ble 602.1.1.1(2). The mass as sem blyR-value for a solid con crete wall with a thick ness of 4inches (102 mm) or greater is R-1.1. R-val ues for otheras sem blies are per mit ted to be based on the hot box testsref er enced in ASTM C 236 or ASTM C 976, two-di men -sional cal cu la tions or iso ther mal plane cal cu la tions.

602.1.1.2 Steel-frame walls. The min i mum re quiredR-val ues for steel-frame walls shall be in ac cor dancewith Ta ble 602.1.1.2.

TABLE 602.1.1.2STEEL-FRAME WALL MINIMUM

PERFORMANCE REQUIREMENTS (R-VALUE)

HDDEQUIVALENT STEEL-FRAME WALLCAVITY AND SHEATHING R-VALUEa

0 - 1,999 R-11 + R-5, R-15 + R-4, R-21 + R-3

2,000 - 3,999 R-11 + R-5, R-15 + R-4, R-21 + R-3

4,000 - 5,999 R-11 + R-9, R-15 + R-8, R-21 + R-7

6,000 - 8,499 R-13 + R-10, R-19 + R-9, R-25 + R-8

8,500 - 12,999 R-13 + R-10, R-19 + R-9, R-25 + R-8

a. The cav ity in su la tion R-value re quire ment is listed first, fol lowed by thesheath ing R-value re quire ment.


SIMPLIFIED PRESCRIPTIVE REQUIREMENTS

TABLE 602.1SIMPLIFIED PRESCRIPTIVE BUILDING ENVELOPE THERMAL COMPONENT CRITERIA

MINIMUM REQUIRED THERMAL PERFORMANCE (U -FACTOR AND R -VALUE)

CLIMATEZONE

HEATINGDEGREE DAYS

MAXIMUM MINIMUM

GlazingU-factor

CeilingR-value

WallR-value

FloorR-value


Slab perimeterR-value and

depth

Crawl spacewall

R-value

1 0 - 499 Any R-13 R-11 R-11 R-0 R-0 R-0

2 500 - 999 0.90 R-19 R-11 R-11 R-0 R-0 R-4

3 1,000 - 1,499 0.75 R-19 R-11 R-11 R-0 R-0 R-5

4 1,500 - 1,999 0.75 R-26 R-13 R-11 R-5 R-0 R-5

5 2,000 - 2,499 0.65 R-30 R-13 R-11 R-5 R-0 R-6

6 2,500 - 2,999 0.60 R-30 R-13 R-19 R-6 R-4, 2 ft. R-7

7 3,000 - 3,499 0.55 R-30 R-13 R-19 R-7 R-4, 2 ft. R-8

8 3,500 - 3,999 0.50 R-30 R-13 R-19 R-8 R-5, 2 ft. R-10

9 4,000 - 4,499 0.45 R-38 R-13 R-19 R-8 R-5, 2 ft. R-11

10 4,500 - 4,999 0.45 R-38 R-16 R-19 R-9 R-6, 2 ft. R-17

11 5,000 - 5,499 0.45 R-38 R-18 R-19 R-9 R-6, 2 ft. R-17

12 5,500 - 5,999 0.40 R-38 R-18 R-21 R-10 R-9, 4 ft. R-19

13 6,000 - 6,499 0.35 R-38 R-18 R-21 R-10 R-9, 4 ft. R-20

14 6,500 - 6,999 0.35 R-49 R-21 R-21 R-11 R-11, 4 ft. R-20

15 7,000 - 8,499 0.35 R-49 R-21 R-21 R-11 R-13, 4 ft. R-20

16 8,500 - 8,999 0.35 R-49 R-21 R-21 R-18 R-14, 4 ft. R-20

17 9,000 - 12,999 0.35 R-49 R-21 R-21 R-19 R-18, 4 ft. R-20




TABLE 602.1.1.1(1)MASS WALL PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS

MASS WALL ASSEMBLY R-VALUEa

Building Location Exterior or Integral Insulation Other Mass Walls

Zone Heating Degree Days Residential Buildings Residential Buildings

1 0 - 499 R-3.8 R-9.7

2 500 - 999 R-4.8 R-9.7

3 1,000 - 1,499 R-4.8 R-9.7

4 1,500 - 1,999 R-8.1 R-10.8

5 2,000 - 2,499 R-8.9 R-10.8

6 2,500 - 2,999 R-8.9 R-10.8

7 3,000 - 3,499 R-8.9 R-10.8

8 3,500 - 3,999 R-8.9 R-10.8

9 4,000 - 4,499 R-8.9 R-10.9

10 4,500 - 4,999 R-10.4 R-12.3

11 5,000 - 5,499 R-11.9 R-15.2

12 5,500 - 5,999 R-11.9 R-15.2

13 6,000 - 6,499 R-11.9 R-15.2

14 6,500 - 6,999 R-15.5 R-18.4

15 9,000 - 8,499 R-15.5 R-18.4

16 8,500 - 8,999 R-18.4 R-18.4

17 9,000 - 12,999 R-18.4 R-18.4

a. The sum of the value in Ta ble 602.1.1.1(2) and ad di tional in su la tion lay ers.

TABLE 602.1.1.1(2)MASS ASSEMBLY R -VALUES

ASSEMBLY TYPEUNGROUTED CELLS,

NOT INSULATED

UNGROUTED CELLS INSULATED

No groutVertical cells grouted at

10′ o.c. or greaterVertical cells grouted at

less than 10′ o.c.

6″ Lightweight concrete block 2.3 5.0 4.5 3.8

6″ Medium-weight concrete block 2.1 4.2 3.8 3.2

6″ Normal-weight concrete block 1.9 3.3 3.1 2.7







Brick cavity wall 3.7 6.7 6.2 5.4

Hollow clay brick 2.0 2.7 2.6 2.4

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.

602.1.2 Ceil ings. The re quired “Ceil ing R-value” in Ta ble602.1 as sumes stan dard truss or raf ter con struc tion, andshall ap ply to all roof/ceil ing por tions of the build ing ther -mal en ve lope, in clud ing ca the dral ceil ings. Where the con -struc tion tech nique al lows the re quired R-value of ceil ingin su la tion to be ob tained over the ex te rior wall top plate,R-30 shall be per mit ted to be used where R-38 is re quired inthe ta ble, and R-38 shall be per mit ted to be used where R-49is re quired.

602.1.2.1 Steel-framed ceil ing. The max i mum re quired UR-fac tor for cold-formed steel truss roof/ceil ing as sem -blies shall be in ac cor dance with Ta ble 602.1.2.1(1) andcom pli ance shall be de ter mined by us ing the UR-fac torsin Ta ble 602.1.2.1(2). This ta ble ap plies to cold-formedsteel truss roof fram ing spaced at 24 inches (609 mm) oncen ter and where the pen e tra tions of the truss mem bersthrough the cav ity in su la tion do not ex ceed three pen e -tra tions for each 4-foot (1220 mm) length of the truss. The max i mum re quired UR-fac tor for C-shapedcold-formed steel roof/ceil ing as sem blies shall be in ac -cor dance with Ta ble 602.1.2.1(3) and com pli ance shallbe de ter mined by us ing the UR-fac tors in Ta ble602.1.2.1(4).

TABLE 602.1.2.1(1)MAXIMUM COLD-FORMED STEEL ROOF/CEILING TRUSS

UR-FACTORS

HEATING DEGREE DAYS UR-FACTOR

0 - 499 0.0742

500 - 1,499 0.0504

1,500 - 1,999 0.0372

2,000 - 3,999 0.0323

4,000 - 6,499 0.0257

6,500 - 12,999 0.0200

TABLE 602.1.2.1(2)COLD-FORMED STEEL ROOF/CEILING TRUSS UR-FACTORS

CAVITYINSULATION

R-VALUE

CONTINUOUS INSULATION BETWEEN DRYWALLAND BOTTOM CHORD

R-0 R-3 R-5

R-13 0.0865 0.0616 0.0546

R-19 0.0597 0.0467 0.0426

R-26 0.0439 0.0364 0.0338

R-30 0.0382 0.0324 0.0303

R-38 0.0302 0.0265 0.0251

R-49 0.0235 0.0212 0.0203

TABLE 602.1.2.1(3)MAXIMUM C-SHAPED, COLD-FORMED STEEL ROOF/CEILING

UR-FACTORS

HEATING DEGREE DAYS

UR-FACTOR

16 inches o.c. 24 inches o.c.

0 - 499 0.0773 0.0742

500 - 1,499 0.0537 0.0519

1,500 - 1,999 0.0405 0.0390

2,000 - 3,999 0.0355 0.0342

4,000 - 6,499 0.0285 0.0274

6,500 - 12,999 0.0223 0.0215




TABLE 602.1.2.1(4)C-SHAPED, COLD-FORMED STEEL ROOF/CEILING UR-FACTORSa

FRAMINGb SPACING R-13 R-19 R-26 R-30 R-38 R-49

2 × 4

16 inches o.c.

0.1328 0.0530 0.0387 0.0336 0.0265 0.0206

2 × 6 0.1328 0.0667 0.0456 0.0386 0.0295 0.0223

2 × 8 0.1328 0.1208 0.0585 0.0475 0.0345 0.0251

2 × 10 0.1328 0.1208 0.1094 0.1037 0.0398 0.0277

2 × 12 0.1328 0.1208 0.1094 0.1037 0.0471 0.0311

2 × 4

24 inches o.c.

0.1129 0.0510 0.0376 0.0327 0.0260 0.0202

2 × 6 0.1129 0.0610 0.0428 0.0366 0.0284 0.0216

2 × 8 0.1129 0.0994 0.0517 0.0429 0.0320 0.0237

2 × 10 0.1129 0.0994 0.0873 0.0816 0.0357 0.0257

2 × 12 0.1129 0.0994 0.0873 0.0816 0.0403 0.0280

For SI: 1 inch = 25.4 mm.a. Lin ear in ter po la tion is per mit ted for de ter min ing U-fac tors which are be tween those given in the ta ble.b. Ap plies to steel fram ing up to a max i mum thick ness of 0.064 inches (16 gage.)

602.1.3 Opaque doors. Opaque doors in the build ing en ve -lope shall have a max i mum U-fac tor of 0.35. One opaquedoor shall be ex empt from this U-fac tor re quire ment.

602.1.4 Floor. The re quired R-value in Ta ble 602.1 shall ap -ply to all floors.

Ex cep tion: Any in di vid ual floor as sem bly with morethan 25 per cent of its con di tioned floor area ex posed di -rectly to out side air shall meet the R-value re quire ment in Ta ble 602.1 for “Ceil ing R-value.”

602.1.4.1 Steel-framed floors. The max i mum re quiredUf-fac tor for C-shaped, cold-formed, steel-framed floorsshall be in ac cor dance with Ta ble 602.1.4.1(1) and com -pli ance shall be de ter mined by us ing the Uf-fac tors in Ta -ble 602.1.4.1(2).

TABLE 602.1.4.1(1)MAXIMUM C-SHAPED, COLD-FORMED STEEL FLOOR

Uf-FACTORS

HEATING DEGREE DAYS

Uf-FACTOR

16 inches o.c. 24 inches o.c.

0 - 2,499 0.0725 0.0708

2,500 - 5,499 0.0477 0.0464

5,500 - 12,999 0.0452 0.0436


602.1.5 Base ment walls. Where the base ment is con sid ered a con di tioned space, the base ment walls shall be in su lated in ac cor dance with Ta ble 602.1. Where the base ment is notcon sid ered a con di tioned space, ei ther the base ment wall orthe ceil ing(s) sep a rat ing the base ment from con di tionedspace shall be in su lated in ac cor dance with Ta ble 602.1.Where base ment walls are re quired to be in su lated, the re -quired R-value shall be ap plied from the top of the base mentwall to a depth of 10 feet (3048 mm) be low grade or to thetop of the base ment floor, which ever is less.

602.1.6 Slab-on-grade floors. For slabs with a top edge 12inches (305 mm) or less be low fin ished grade, the re quired“Slab per im e ter R-value and depth” in Ta ble 602.1 shall beap plied to the out side of the foun da tion or the in side of the

foun da tion wall. The in su la tion shall ex tend down wardfrom the top of the slab or down ward from the top of the slabto the bot tom of the slab and then hor i zon tally to the in te rioror ex te rior, un til the dis tance listed in Ta ble 602.1 isreached.

Where in stalled be tween the ex te rior wall and the edge ofthe in te rior slab, the top edge of the in su la tion shall be per -mit ted to be cut at a 45-de gree (0.79 rad) an gle away fromthe ex te rior wall. In su la tion ex tend ing hor i zon tally out sideof the foun da tion shall be pro tected by pave ment or by amin i mum of 10 inches (254 mm) of soil.

In lo ca tions of 500 HDD or greater, R-2 shall be added tothe “Slab per im e ter R-value” in Ta ble 602.1 where un in su -lat ed hot wa ter pipes, air dis tri bu tion ducts or elec tric heat -ing ca bles are in stalled within or un der the slab.

Ex cep tion: Slab per im e ter in su la tion is not re quired forun heated slabs in ar eas of very heavy ter mite in fes ta tionprob a bil ity as shown in Fig ure 502.2(7). Where this ex -cep tion is used, build ing en ve lope com pli ance shall bedem on strated by us ing Sec tion 502.2.2 or Chap ter 4 with the ac tual “Slab per im e ter R-value and depth” in Ta ble602.1, or by us ing Sec tion 502.2.4.

602.1.7 Crawl space walls. Where the floor above the crawl space is un in su lat ed, in su la tion shall be in stalled on crawlspace walls when the crawl space is not vented to out side air. The re quired “Crawl space wall R-value” in Ta ble 602.1shall be ap plied in side of the crawl space wall, down wardfrom the sill plate to the ex te rior fin ished grade level andthen ver ti cally or hor i zon tally or both for 24 inches (610mm). The ex posed earth in all crawl space foun da tions shallbe cov ered with a con tin u ous va por re tarder hav ing a max i -mum permeance rat ing of 1.0 perm (5.7 ⋅ 10-11 kg/Pa ⋅ s ⋅ m2), when tested in ac cor dance with ASTM E 96.

602.1.8 Ma sonry ve neer. For ex te rior foun da tion in su la -tion, the hor i zon tal por tion of the foun da tion which sup -ports a ma sonry ve neer is not re quired to be in su lated.

602.1.9 Pro tec tion. Ex posed in su lat ing ma te ri als ap plied to the ex te rior of foun da tion walls shall have a rigid, opaqueand weather-re sis tant pro tec tive cov er ing. The pro tec tive



TABLE 602.1.4.1(2)C-SHAPED, COLD-FORMED STEEL FLOOR Uf-FACTORSa

FRAMING b SPACING R-11 R-13 R-15 R-19 R-21 R-25 R-30

2 × 6

16 inches o.c.

0.1058 0.1031 0.1005 0.0583 0.0523 NA NA

2 × 8 0.1058 0.1031 0.1005 0.0957 0.0935 0.0548 NA

2 × 10 0.1058 0.1031 0.1005 0.0957 0.0935 0.0894 0.0838

2 × 12 0.1058 0.1031 0.1005 0.0957 0.0935 0.0894 0.0838

2 × 6

24 inches o.c.

0.0941 0.0907 0.0875 0.0538 0.0486 NA NA

2 × 8 0.0941 0.0907 0.0875 0.0818 0.0792 0.0488 NA

2 × 10 0.0941 0.0907 0.0875 0.0818 0.0792 0.0745 0.0697

2 × 12 0.0941 0.0907 0.0875 0.0818 0.0792 0.0745 0.0697

For SI: 1 inch = 25.4 mm.NA = Not ap pli ca blea. Lin ear in ter po la tion is per mit ted for de ter min ing U-fac tors which are be tween those given in the ta ble.b. Ap plies to steel fram ing up to a max i mum thick ness of 0.064 inches (16 gage).

cov er ing shall ex tend 6 inches (152 mm) be low fin ishedgrade level.

602.1.10 Caulking, seal ants and gasketing. All joints,seams, pen e tra tions (site-built win dows, doors and sky -lights), open ings be tween win dow and door as sem blies andtheir re spec tive jambs and fram ing, and other sources of airleak age (in fil tra tion and exfiltration) through the build ingen ve lope shall be caulked, gasketed, weath er stripped,wrapped or oth er wise sealed to limit un con trolled air move -ment.

602.1.11 Mois ture con trol. Pro vi sions for mois ture con -trol shall be in ac cor dance with Sec tion 502.1.1.

602.1.12 Re cessed light ing fix tures. Where pro vided, re -cessed light ing fix tures shall be in stalled in ac cor dance with Sec tion 502.1.3.

602.2 Max i mum so lar heat gain co ef fi cient for fen es tra tionprod ucts. In lo ca tions with heat ing de gree days (HDD) lessthan 3,500, the area-weighted-av er age so lar heat gain co ef fi -cient (SHGC) for glazed fen es tra tion in stalled in the build ingen ve lope shall not ex ceed 0.40.

602.3 Fen es tra tion ex emp tion. Up to 1 per cent of the to talglaz ing area shall be ex empt from the “Glazing U-fac tor” re -quire ment in Ta ble 602.1.

602.4 Re place ment fen es tra tion. Where some or all of an ex -ist ing fen es tra tion unit is re placed with an en tirely new re place -ment fen es tra tion prod uct, in clud ing frame, sash and glazedpor tion, the re place ment fen es tra tion prod uct shall have aU-fac tor that does not ex ceed the “Fen es tra tion U-fac tor” re -quire ment in Ta ble 502.2.5 ap pli ca ble to the cli mate zone(HDD) where the build ing is lo cated. The re place ment fen es -tra tion prod uct(s) must also sat isfy the air leak age re quire -ments and SHGC of Sec tions 601.3.2.2 and 602.2,re spec tively.

Ex cep tion: Re place ment sky lights shall have a max i mumU-fac tor of 0.60 when in stalled in any lo ca tion above 1,999HDD.

SECTION 603MECHANICAL SYSTEMS

603.1 Heating and air-con di tion ing equip ment and ap pli -ances. Heating and air-con di tion ing equip ment and ap pli ancesshall com ply with the ap pli ca ble re quire ments of Sec tion 503.


604.1 Wa ter-heat ing equip ment and ap pli ances. Wa -ter-heat ing equip ment and ap pli ances shall com ply with the ap -pli ca ble re quire ments of Sec tion 504.

SECTION 605ELECTRICAL POWER AND LIGHTING

605.1 Elec tri cal en ergy con sump tion. In res i den tial build -ings hav ing in di vid ual dwell ing units, pro vi sions shall be made

to de ter mine the elec tri cal en ergy con sumed by each ten ant bysep a rately me ter ing in di vid ual dwell ing units.



CHAPTER 7

BUILDING DESIGN FOR ALL COMMERCIAL BUILDINGS

SECTION 701GENERAL

701.1 Scope. Com mer cial build ings shall meet the re quire -ments of ASHRAE/IESNA 90.1.

Ex cep tion: Com mer cial build ings that com ply with Chap -ter 8.


CHAPTER 8

DESIGN BY ACCEPTABLE PRACTICEFOR COMMERCIAL BUILDINGS

SECTION 801GENERAL

801.1 Scope. The re quire ments con tained in this chap ter areap pli ca ble to com mer cial build ings, or por tions of com mer cialbuild ings. Build ings con structed in ac cor dance with this chap -ter are deemed to com ply with this code.

801.2 Ap pli ca tion. The re quire ments in Sec tions 802, 803,804 and 805 shall each be sat is fied on an in di vid ual ba sis.Where one or more of these sec tions is not sat is fied, com pli -ance for that sec tion(s) shall be dem on strated in ac cor dancewith the ap pli ca ble pro vi sions of ASHRAE/IESNA 90.1.

Ex cep tion: Build ings con form ing to Sec tion 806, pro -vided Sec tions 802.1.2, 802.3, 803.2.1 or 803.3.1 as ap -pli ca ble, 803.2.2 or 803.3.2 as ap pli ca ble, 803.2.3 or803.3.3 as ap pli ca ble, 803.2.8 or 803.3.6 as ap pli ca ble,803.2.9 or 803.3.7 as ap pli ca ble, 804, 805.2, 805.3,805.4, 805.6 and 805.7 are each sat is fied.

SECTION 802BUILDING ENVELOPE REQUIREMENTS

802.1 Gen eral. Walls, roof as sem blies, floors, glaz ing andslabs on grade which are part of the build ing en ve lope for build -ings where the win dow and glazed door area is not greater than50 per cent of the gross area of above-grade walls shall meet there quire ments of Sec tions 802.2.1 through 802.2.9, as ap pli ca -ble. Build ings with more glaz ing shall meet the ap pli ca ble pro -vi sions of ASHRAE/IESNA 90.1.

802.1.1 Clas si fi ca tion of walls. Walls as so ci ated with thebuild ing en ve lope shall be clas si fied in ac cor dance withSec tion 802.1.1.1, 802.1.1.2 or 802.1.1.3.

802.1.1.1 Above-grade walls. Above-grade walls arethose walls cov ered by Sec tion 802.2.1 on the ex te rior ofthe build ing and com pletely above grade or theabove-grade por tion of a base ment or first-story wall thatis more than 15 per cent above grade.

802.1.1.2 Be low-grade walls. Be low-grade walls cov -ered by Sec tion 802.2.8 are base ment or first-story wallsas so ci ated with the ex te rior of the build ing that are atleast 85 per cent be low grade.

802.1.1.3 In te rior walls. In te rior walls cov ered by Sec -tion 802.2.9 are those walls not on the ex te rior of thebuild ing and that sep a rate con di tioned and un con di -tioned space.

802.1.2 Mois ture con trol. All framed walls, floors and ceil -ings not ven ti lated to al low mois ture to es cape shall be pro -vided with an ap proved va por re tarder hav ing a permeance

rat ing of 1 perm (5.7 x 10 –11 kg/Pa . s . m2) or less, whentested in ac cor dance with the dessicant method us ing Pro ce -dure A of ASTM E 96. The va por re tarder shall be in stalledon the warm-in-win ter side of the in su la tion.

Ex cep tions:

1. Build ings lo cated in Cli mate Zones 1 through 7 asin di cated in Ta ble 302.1.

2. In con struc tion where mois ture or its freez ing willnot dam age the ma te ri als.

3. Where other ap proved means to avoid con den sa -tion in un ven ti lated framed wall, floor, roof andceil ing cav i ties are pro vided.

802.2 Cri te ria. The build ing en ve lope com po nents shall meeteach of the ap pli ca ble re quire ments in Ta bles 802.2(1),802.2(2), 802.2(3) and 802.2(4) based on the per cent age ofwall that is glazed. The per cent age of wall that is glazed shall be de ter mined by di vid ing the ag gre gate area of rough open ingsfor glaz ing (win dows and glazed doors) in all above-gradewalls as so ci ated with the build ing en ve lope by the to tal grossarea of all above-grade ex te rior walls that are a part of the build -ing en ve lope. In build ings with mul ti ple types of build ing en ve -lope con struc tion, each build ing en ve lope con struc tion typeshall be eval u ated sep a rately. Where Ta ble 802.2(1), 802.2(2),802.2(3) or 802.2(4) does not list a par tic u lar con struc tion type, the ap pli ca ble pro vi sions of ASHRAE/IESNA 90.1 shall beused in lieu of Sec tion 802.

802.2.1 Above-grade walls. The min i mum ther mal re sis -tance (R-value) of the in su lat ing ma te rial(s) in stalled in thewall cav ity be tween the fram ing mem bers and con tin u ouslyon the walls shall be as spec i fied in Ta ble 802.2(1),802.2(2), 802.2(3) or 802.2(4), based on fram ing type andcon struc tion ma te ri als used in the wall as sem bly. Whereboth cav ity and con tin u ous in su la tion val ues are pro vided in Ta ble 802.2(1), 802.2(2), 802.2(3) or 802.2(4), both re -quire ments shall be met. Con crete ma sonry units (CMU) atleast 8 inches (203 mm) nom i nal in thick ness with es sen -tially equal amounts of mass on ei ther side of the in su la tionlayer are con sid ered as hav ing in te gral in su la tion; how ever,the ther mal re sis tance of that in su la tion shall not be con sid -ered when de ter min ing com pli ance with Ta ble 802.2(1),802.2(2), 802.2(3) or 802.2(4). “Other ma sonry walls” shallin clude walls weigh ing at least 35 pounds per square foot(170 kg/m2) of wall sur face area and do not in clude CMUsless than 8 inches (203 mm) nom i nal in thick ness.

802.2.2 Nonglazed doors. Nonglazed doors shall meet theap pli ca ble re quire ments for win dows and glazed doors andbe con sid ered as part of the gross area of above-grade wallsthat are part of the build ing en ve lope.



ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS

TABLE 802.2(1)BUILDING ENVELOPE REQUIREMENTSa through e

WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA

ELEMENT CONDITION/VALUE

Skylights (U-factor)

Slab or below-grade wall (R-value)

Windows and glass doors SHGC U-factor

PF < 0.25

0.25 ≤ PF < 0.50

PF ≥ 0.50Roof assemblies (R-value) Insulation between framing Continuous insulation

All-wood joist/truss

Metal joist/truss

Concrete slab or deck

Metal purlin with thermal block

Metal purlin without thermal blockFloors over outdoor air or unconditionedspace (R-value) Insulation between framing Continuous insulation


Metal joist/truss

Concrete slab or deckAbove-grade walls (R-value) No framing Metal framing Wood framing

Framed R-value cavity

NA

R-value continuous NA

CMU, ≥ 8 in, with integral insulation R-value cavity NA

R-value continuous

Other masonry walls R-value cavity

NA

R-value continuous

For SI: 1 inch = 25.4 mm.a. Values shall be de ter mined from Ta bles 802.2(5) through 802.2(37) us ing the cli mate zone(s) spec i fied in Ta ble 302.1. (Note: The ta bles be gin on page 78.)b. “NA” in di cates the con di tion is not ap pli ca ble.c. An R-value of zero in di cates no in su la tion is re quired.d. “Any” in di cates any avail able prod uct will com ply.e. “X” in di cates no com ply ing op tion ex ists for this con di tion.


ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING


WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA





PF < 0.25

0.25 ≤ PF < 0.50



Metal joist/truss





Metal joist/truss



NA



R-value continuous


NA

R-value continuous










PF < 0.25

0.25 ≤ PF < 0.50



Metal joist/truss





Metal joist/truss



NA



R-value continuous


NA

R-value continuous





WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN THAN 50 PERCENT OF ABOVE-GRADE WALL AREA





PF < 0.25

0.25 ≤ PF < 0.50

PF ≥ 0.50

Roof assemblies (R-value) Insulation between framing Continuous insulation


Metal joist/truss



Metal purlin without thermal block

Floors over outdoor air orunconditioned space (R-value) Insulation between framing Continuous insulation


Metal joist/truss


Above-grade walls (R-value) No framing Metal framing Wood framing


NA



R-value continuous


NA

R-value continuous


802.2.3 Win dows and glass doors. The max i mum so larheat gain co ef fi cient (SHGC) and ther mal trans mit tance(U-fac tor) of win dow as sem blies and glass doors lo cated inthe build ing en ve lope shall be as spec i fied in Ta ble 802.2(1), 802.2(2), 802.2(3) or 802.2(4), based on the win dow pro jec -tion fac tor.

The win dow pro jec tion fac tor shall be de ter mined in ac -cor dance with Equa tion 8-1.

PF = A/B (Equa tion 8-1)

where:

PF = Pro jec tion fac tor (dec i mal).

A = Dis tance mea sured hor i zon tally from the fur thestcon tin u ous ex trem ity of any over hang, eave, orper ma nently at tached shad ing de vice to the ver ti calsur face of the glaz ing.

B = Dis tance mea sured ver ti cally from the bot tom ofthe glaz ing to the un der side of the over hang, eave,or per ma nently at tached shad ing de vice.

Where dif fer ent win dows or glass doors have dif fer entPF val ues, they shall each be eval u ated sep a rately, or anarea-weighted PF value shall be cal cu lated and used for allwin dows and glass doors.

802.2.4 Roof as sem bly. The min i mum ther mal re sis tance(R-value) of the in su lat ing ma te rial in stalled ei ther be tweenthe roof fram ing or con tin u ously on the roof as sem bly shallbe as spec i fied in Ta ble 802.2(1), 802.2(2), 802.2(3) or802.2(4), based on con struc tion ma te ri als used in the roofas sem bly.

802.2.5 Sky lights. Sky lights lo cated in the build ing en ve -lope shall be lim ited to 3 per cent of the gross roof as sem blyarea and shall have a max i mum ther mal trans mit tance(U-fac tor) of the sky light as sem bly as spec i fied in Ta ble802.2(1), 802.2(2), 802.2(3) or 802.2(4).

802.2.6 Floors over out door air or un con di tioned space.The min i mum ther mal re sis tance (R-value) of the in su lat ing ma te rial in stalled ei ther be tween the floor fram ing or con -tin u ously on the floor as sem bly shall be as spec i fied in Ta ble 802.2(1), 802.2(2), 802.2(3) or 802.2(4) based on con struc -tion ma te ri als used in the floor as sem bly.

802.2.7 Slabs on grade. The min i mum ther mal re sis tance(R-value) of the in su la tion around the per im e ter of the slabfloor shall be as spec i fied in Ta ble 802.2(1), 802.2(2),802.2(3) or 802.2(4). The in su la tion shall be placed on theout side of the foun da tion or on the in side of a foun da tionwall. The in su la tion shall ex tend down ward from the top ofthe slab for a min i mum of 48 inches (1219 mm) or down -ward to at least the bot tom of the slab and then hor i zon tallyto the in te rior or ex te rior for a min i mum to tal dis tance of 48inches (1219 mm).

802.2.8 Be low-grade walls. The min i mum ther mal re sis -tance (R-value) of the in su lat ing ma te rial in stalled in, orcon tin u ously on, the be low-grade walls shall be as spec i fiedin Ta ble 802.2(1), 802.2(2), 802.2(3) or 802.2(4) and shall

ex tend to a depth of 10 feet (3048 mm) be low the out sidefin ish ground level, or to the level of the floor, which ever isless.

802.2.9 In te rior walls. The min i mum ther mal re sis tance(R-value) of the in su lat ing ma te rial in stalled in the wall cav -ity or con tin u ously on the in te rior walls shall be as spec i fiedin Ta ble 802.2(1) for above-grade walls, re gard less of glaz -ing area, based on fram ing type and con struc tion ma te ri alsused in the wall as sem bly.

802.3 Air leak age. The re quire ments for air leak age shall be asspec i fied in Sec tions 802.3.1 and 802.3.2.

802.3.1 Win dow and door as sem blies. The air leak age ofwin dow and slid ing or swing ing door as sem blies that arepart of the build ing en ve lope shall be de ter mined in ac cor -dance with AAMA/WDMA 101/I .S.2 or101/I.S.2/NAFS-02, or NFRC 400 by an ac cred ited, in de -pend ent lab o ra tory, and la beled and cer ti fied by the man u -fac turer and shall not ex ceed the val ues in Ta ble 502.1.4.1.

Ex cep tion: Site-con structed win dows and doors that areweath er stripped or sealed in ac cor dance with Sec tion802.3.3.

802.3.2 Cur tain wall, store front glaz ing and com mer cialen trance doors. Cur tain wall, store front glaz ing and com -mer cial-glazed swing ing en trance doors and re volv ingdoors shall be tested for air leak age at 1.57 pounds persquare inch (psi) (75 Pa) in ac cor dance with ASTM E 283.For cur tain walls and store front glaz ing, the max i mum airleak age rate shall be 0.3 cu bic feet per min ute per squarefoot (cfm/ft2) (5.5 m3/h ⋅ m2) of fen es tra tion area. For com -mer cial glazed swing ing en trance doors and re volv ingdoors, the max i mum air leak age rate shall be 1.00 cfm/ft2

(18.3 m3/h ⋅ m2) of door area when tested in ac cor dance with ASTM E 283.

802.3.3 Sealing of the build ing en ve lope. Open ings andpen e tra tions in the build ing en ve lope shall be sealed withcaulk ing ma te ri als or closed with gasketing sys tems com -pat i ble with the con struc tion ma te ri als and lo ca tion. Jointsand seams shall be sealed in the same man ner or taped orcov ered with a mois ture va por-per me able wrap ping ma te -rial. Sealing ma te ri als span ning joints be tween con struc tionma te ri als shall al low for ex pan sion and con trac tion of thecon struc tion ma te ri als.

802.3.4 Damp ers in te gral to the build ing en ve lope. Stair,el e va tor shaft vents, and other damp ers in te gral to the build -ing en ve lope shall be equipped with mo tor ized damp erswith a max i mum leak age rate of 3 cfm/ft2 [5.1 L/s ⋅ m2] at1.0 inch wa ter gauge (w.g.) (250 Pa) when tested in ac cor -dance with AMCA 500.

Ex cep tion: Grav ity (nonmo tor ized) damp ers are per mit -ted to be used in build ings less than three sto ries in heightabove grade.

802.3.5 Loading dock weatherseals. Cargo doors andload ing dock doors shall be equipped with weatherseals tore strict in fil tra tion when ve hi cles are parked in the door way.



802.3.6 Ves ti bules. A door that sep a rates con di tioned spacefrom the ex te rior shall be pro tected with an en closed ves ti -bule, with all doors open ing into and out of the ves ti buleequipped with self-clos ing de vices. Ves ti bules shall be de -signed so that in pass ing through the ves ti bule it is not nec es -sary for the in te rior and ex te rior doors to open at the same time.

Ex cep tions:

1. Build ings in Cli mate Zones 1a through 4b as in di -cated in Ta ble 302.1.

2. Doors not in tended to be used as a build ing en -trance door, such as doors to me chan i cal or elec tri -cal equip ment rooms.

3. Doors open ing di rectly from a guestroom or dwell -ing unit.

4. Doors that open di rectly from a space less than3,000 square feet (298 m2) in area.

5. Re volving doors.

6. Doors used pri mar ily to fa cil i tate ve hic u lar move -ment or ma te rial han dling and ad ja cent per son neldoors.

802.3.7 Re cessed light ing fix tures. When in stalled in thebuild ing en ve lope, re cessed light ing fix tures shall meet oneof the fol low ing re quire ments:

1. Type IC rated, man u fac tured with no pen e tra tions be -tween the in side of the re cessed fix ture and ceil ingcav ity and sealed or gasketed to pre vent air leak ageinto the un con di tioned space.

2. Type IC or non-IC rated, in stalled in side a sealed boxcon structed from a min i mum 0.5-inch-thick (12.7mm) gyp sum wall board or con structed from a pre -formed poly meric va por bar rier, or other air-tight as -sem bly man u fac tured for this pur pose, whilemain tain ing re quired clear ances of not less than 0.5inch (12.7 mm) from com bus ti ble ma te rial and notless than 3 inches (76 mm) from in su la tion ma te rial.

3. Type IC rated, in ac cor dance with ASTM E 283 ad -mit ting no more than 2.0 cu bic feet per min ute (cfm)(0.944 L/s) of air move ment from the con di tionedspace to the ceil ing cav ity. The light ing fix ture shallbe tested at 1.57 psi (75 Pa) pres sure dif fer ence andshall be la beled.

SECTION 803BUILDING MECHANICAL SYSTEMS

803.1 Gen eral. This sec tion cov ers the de sign and con struc tion of me chan i cal sys tems and equip ment serv ing the build ingheat ing, cool ing or ven ti lat ing needs.

803.1.1 Com pli ance. Com pli ance with Sec tion 803 shall be achieved by meet ing ei ther Sec tion 803.2 or 803.3.

803.2 Sim ple HVAC sys tems and equip ment. This sec tionap plies to build ings served by uni tary or pack aged HVACequip ment listed in Ta bles 803.2.2(1) through 803.2.2(5), eachserv ing one zone and con trolled by a sin gle ther mo stat in thezone served. It also ap plies to two-pipe heat ing sys tems serv ing one or more zones, where no cool ing sys tem is in stalled.

This sec tion does not ap ply to fan sys tems serv ing mul ti plezones, nonunitary or nonpackaged HVAC equip ment and sys -tems or hydronic or steam heat ing and hydronic cool ing equip -ment and dis tri bu tion sys tems that pro vide cool ing or cool ingand heat ing which are cov ered by Sec tion 803.3.

[M] 803.2.1 Cal cu la tion of heat ing and cool ing loads.De sign loads shall be de ter mined in ac cor dance with thepro ce dures de scribed in the ASHRAE Fun da men talsHand book. Heating and cool ing loads shall be ad justed toac count for load re duc tions that are achieved when en ergyre cov ery sys tems are uti lized in the HVAC sys tem in ac cor -dance with the ASHRAE HVAC Sys tems and Equip mentHand book. Al ter na tively, de sign loads shall be de ter minedby an ap proved equiv a lent com pu ta tion pro ce dure, us ingthe de sign pa ram e ters spec i fied in Chap ter 3.

803.2.1.1 Equip ment and sys tem siz ing. Heating andcool ing equip ment and sys tems ca pac ity shall not ex ceed the loads cal cu lated in ac cor dance with Sec tion 803.2.1.A sin gle piece of equip ment pro vid ing both heat ing andcool ing must sat isfy this pro vi sion for one func tion withthe ca pac ity for the other func tion as small as pos si ble,within avail able equip ment op tions.

803.2.2 HVAC equip ment per for mance re quire ments.Equip ment shall meet the min i mum ef fi ciency re quire -ments of Ta bles 803.2.2(1), 803.2.2(2), 803.2.2(3),803.2.2(4) and 803.2.2(5), when tested and rated in ac cor -dance with the ap pli ca ble test pro ce dure. The ef fi ciencyshall be ver i fied through data fur nished by the man u fac tureror through cer tif i ca tion un der an ap proved cer tif i ca tion pro -gram. Where mul ti ple rat ing con di tions or per for mance re -quire ments are pro vided, the equip ment shall sat isfy allstated re quire ments.

803.2.3 Tem per a ture and hu mid ity con trols. Re quire -ments for tem per a ture and hu mid ity con trols shall be asspec i fied in Sec tions 803.2.3.1 and 803.2.3.2.

803.2.3.1 Tem per a ture con trols. Each heat ing andcool ing sys tem shall have at least one solid-state pro -gram ma ble ther mo stat. The ther mo stat shall have the ca -pa bil ity to set back or shut down the sys tem based on dayof the week and time of day, and pro vide a readily ac ces -si ble man ual over ride that will re turn to the presetback or shut down sched ule with out re pro gram ming.

Ex cep tions:

1. HVAC sys tems serv ing ho tel /mo telguestrooms.

2. Pack aged ter mi nal air con di tioners, pack agedter mi nal heat pumps and room air con di tionersys tems.

803.2.3.2 Heat pump sup ple men tary heat. Heatpumps hav ing sup ple men tary elec tric-re sis tance heatshall have con trols that, ex cept dur ing de frost, pre ventsup ple men tal heat op er a tion when the heat pump canmeet the heat ing load.

803.2.3.3 Hu mid ity con trols. When humidistats are in -stalled, they shall have the ca pa bil ity to pre vent the use of fos sil fuel or elec tric power to achieve a hu mid ity be low



60 per cent when the sys tem con trolled is cool ing, andabove 30 per cent when the sys tem con trolled is heat ing.

Ex cep tions:

1. Sys tems serv ing spaces where spe cific hu mid -ity lev els are re quired to sat isfy pro cess needs,such as com puter rooms, mu se ums, sur gi calsuites and build ings with re frig er at ing sys tems,such as su per mar kets, re frig er ated ware housesand ice are nas.

2. Sys tems where hu mid ity is re moved as the re -sult of the use of a desiccant sys tem with en ergy re cov ery.

3. Re heat sys tems uti liz ing site-re cov ered (in -clud ing con denser heat) or site-so lar en ergysources.

803.2.4 Hydronic sys tem con trols. Hydronic sys tems of atleast 600,000 Brit ish ther mal units per hour (Btu/h) (175860 W) de sign ca pac ity sup ply ing heated wa ter to com fortcon di tion ing sys tems shall in clude con trols that meet the re -quire ments of Sec tion 803.3.3.7.

803.2.5 Ven ti la tion. Ven ti la tion, ei ther nat u ral or me chan i -cal, shall be pro vided in ac cor dance with Chap ter 4 of the In -ter na tional Me chan i cal Code. Where me chan i calven ti la tion is pro vided, the sys tem shall pro vide the ca pa bil -ity to re duce the out door air sup ply to the min i mum re quired by Chap ter 4 of the In ter na tional Me chan i cal Code.

803.2.6 Cooling with out door air. Each sys tem with a cool -ing ca pac ity greater than 65,000 Btu/h (19 kW) lo cated inother than Cli mate Zones 1, 2, 3b, 5a or 6b as shown in Ta ble302.1 shall have an economizer that will au to mat i cally shutoff the cool ing sys tem and al low all of the sup ply air to bepro vided di rectly from out doors.

Econ o miz ers shall be ca pa ble of op er at ing at 100-per centout side air, even if ad di tional me chan i cal cool ing is re quired to meet the cool ing load of the build ing. Where a sin gleroom or space is sup plied by mul ti ple air sys tems, the ag gre -gate ca pac ity of those sys tems shall be used in ap ply ing thisre quire ment.

Ex cep tions:

1. Where the cool ing equip ment is cov ered by themin i mum ef fi ciency re quire ments of Ta ble803.2.2(1) or 803.2.2(2) and meets the ef fi ciencyre quire ments of Ta ble 803.2.6.

2. Sys tems with air or evaporatively cooledcondensors and which serve spaces with open casere frig er a tion or that re quire fil tra tion equip ment inor der to meet the min i mum ven ti la tion re quire -ments of Chap ter 4 of the In ter na tional Me chan i -cal Code.

3. Sys tems with a cool ing ca pac ity less than 135,000Btu/h (40 kW) in Cli mate Zones 3c, 5b, 7, 13b, and14.



TABLE 803.2.2 (1)UNITARY AIR CONDITIONERS AND CONDENSING UNITS, ELECTRICALLY OPERATED,

MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPE SIZE CATEGORYSUBCATEGORY ORRATING CONDITION

MINIMUMEFFICIENCY b TEST PROCEDUREa

Air conditioners,Air cooled

< 65,000 Btu/hd Split system 10.0 SEER ARI 210/240

Single package 9.7 SEER

≥ 65,000 Btu/h and< 135,000 Btu/h

Split system andsingle package

10.3 EERc

≥ 135,000 Btu/h and< 240,000 Btu/h


9.7 EERc

ARI 340/360

≥ 240,000 Btu/h and< 760,000 Btu/h


9.5 EERc

9.7 IPLVc

≥ 760,000 Btu/hSplit system andsingle package

9.2 EERc

9.4 IPLVc

Air conditioners, Water andevaporatively cooled

< 65,000 Btu/h Split system andsingle package

12.1 EERARI 210/240

≥ 65,000 Btu/h and< 135,000 Btu/h


11.5 EERc

≥ 135,000 Btu/h and< 240,000 Btu/h


11.0 EERc ARI 340/360


11.0 EERc

10.3 IPLVc

For SI: 1 British thermal unit per hour = 0.2931 W.a. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.b. IPLVs are only ap pli ca ble to equip ment with ca pac ity mod u la tion.c. De duct 0.2 from the re quired EERs and IPLVs for units with a heat ing sec tion other than elec tric re sis tance heat.d. Sin gle-phase air-cooled air con di tion ers < 65,000 Btu/h are reg u lated by the Na tional Ap pli ance En ergy Con ser va tion Act of 1987 (NAECA). SEER val ues are

those set by NAECA.



TABLE 803.2.2(2)UNITARY AND APPLIED HEAT PUMPS, ELECTRICALLY OPERATED,

MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPE SIZE CATEGORYSUBCATEGORY ORRATING CONDITION

MINIMUMEFFICIENCYb TEST PROCEDUREa

Air cooled (Cooling mode)

< 65,000 Btu/hd Split system 10.0 SEER

ARI 210/240Single package 9.7 SEER

≥ 65,000 Btu/h and< 135,000 Btu/h


10.1 EERc

≥ 135,000 Btu/h and< 240,000 Btu/h


9.3 EERc

ARI 340/360


9.0 EERc

9.2 IPLVc

Water source(Cooling mode)

< 17,000 Btu/h 86oF entering water 11.2 EER ARI/ASHRAE-13256-1

≥ 17,000 Btu/h and< 135,000 Btu/h

86oF entering water 12.0 EER ARI/ASHRAE-13256-1

Groundwater source(Cooling mode) < 135,000 Btu/h 59oF entering water 16.2 EER ARI/ASHRAE-13256-1

Ground source(Cooling mode)

< 135,000 Btu/h 77oF entering water 13.4 EER ARI/ASHRAE-13256-1

Air cooled (Heating mode)

< 65,000 Btu/hd

(Cooling capacity)Split system 6.8 HSPF

ARI 210/240Single package 6.6 HSPF

≥ 65,000 Btu/h and< 135,000 Btu/h

(Cooling capacity)

47oF db/43oF wboutdoor air

3.2 COP

≥ 135,000 Btu/h(Cooling capacity)

47oF db/43oF wboutdoor air 3.1 COP ARI 340/360

Water source(Heating mode)

< 135,000 Btu/h(Cooling capacity)

68oF entering water 4.2 COP ARI/ASHRAE-13256-1

Groundwater source(Heating mode)



Ground source (Heating mode)



For SI: EC = [(EF) - 32] / 1.8, 1British thermal unit per hour = 0.2931W.db = dry-bulb tem per a ture, EFwb = wet-bulb tem per a ture, EFa. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.b. IPLVs and Part load rat ing con di tions are only ap pli ca ble to equip ment with ca pac ity mod u la tion.c. De duct 0.2 from the re quired EERs and IPLVs for units with a heat ing sec tion other than elec tric re sis tance heat.d. Sin gle-phase air-cooled heat pumps < 65,000 Btu/h are reg u lated by the Na tional Ap pli ance En ergy Con ser va tion Act of 1987 (NAECA). SEER and HSPF val ues

are those set by NAECA.



TABLE 803.2.2(4)WARM AIR FURNACES AND COMBINATION WARM AIR FURNACES/AIR-CONDITIONING UNITS,

WARM AIR DUCT FURNACES AND UNIT HEATERS, MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPE SIZE CATEGORY (INPUT)SUBCATEGORY ORRATING CONDITION

MINIMUMEFFICIENCYd,e TEST PROCEDUREa

Warm air furnaces, gas fired < 225,000 Btu/h —78% AFUE

or80% Et

c

DOE 10 CFRPart 430 or

ANSI Z21.47

≥ 225,000 Btu/h Maximum capacityc 80% Etf ANSI Z21.47

Warm air furnaces, oil fired< 225,000 Btu/h —

78% AFUEor

80% Etc

DOE 10 CFR Part 430 or

UL 727

≥ 225,000 Btu/h Maximum capacityb 81% Etg UL 727

Warm air duct furnaces,gas fired

All capacities Maximum capacityb 80% Ec ANSI Z83.9

Warm air unit heaters,gas fired

All capacities Maximum capacityb 80% Ec ANSI Z83.8

Warm air unit heaters, oil fired All capacities Maximum capacityb 80% Ec UL 731

For SI: 1 British thermal unit per hour = 0.2931W.a. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.b. Min i mum and max i mum rat ings as pro vided for and al lowed by the unit’s con trols.c. Com bi na tion units not cov ered by the Na tional Ap pli ance En ergy Con ser va tion Act of 1987 (NAECA) (3-phase power or cool ing ca pac ity greater than or equal to

65,000 Btu/h [19 kW]) shall com ply with ei ther rat ing.d. Et = Ther mal ef fi ciency. See test pro ce dure for de tailed dis cus sion.e. Ec = Com bus tion ef fi ciency (100% less flue losses). See test pro ce dure for de tailed dis cus sion.f. Ec = Com bus tion ef fi ciency. Units must also in clude an IID, have jacket losses not ex ceed ing 0.75 per cent of the in put rat ing, and have ei ther power vent ing or a

flue damper. A vent damper is an ac cept able al ter na tive to a flue damper for those fur naces where com bus tion air is drawn from the con di tioned space.g. Et = Ther mal ef fi ciency. Units must also in clude an IID, have jacket losses not ex ceed ing 0.75 per cent of the in put rat ing, and have ei ther power vent ing or a flue

damper. A vent damper is an ac cept able al ter na tive to a flue damper for those fur naces where com bus tion air is drawn from the con di tioned space.

TABLE 803.2.2(3)PACKAGED TERMINAL AIR CONDITIONERS AND PACKAGED TERMINAL HEAT PUMPS

EQUIPMENT TYPE SIZE CATEGORY (INPUT)SUBCATEGORY ORRATING CONDITION

MINIMUMEFFICIENCYb TEST PROCEDUREa

PTAC (Cooling mode)New construction

All capacities 95°F db outdoor air 12.5 - (0.213 ⋅ Cap/1000) EER

ARI 310/380

PTAC (Cooling mode)Replacementsc All capacities 95oF db outdoor air 10.9 - (0.213 ⋅ Cap/1000) EER

PTHP (Cooling mode)New construction

All capacities 95oF db outdoor air 12.3 - (0.213 ⋅ Cap/1000) EER

PTHP (Cooling mode)Replacementsc All capacities 95oF db outdoor air 10.8 - (0.213 ⋅ Cap/1000) EER

PTHP (Heating mode)New construction

All capacities — 3.2 - (0.026 ⋅ Cap/1000) COP

PTHP (Heating mode)Replacementsc All capacities — 2.9 - (0.026 ⋅ Cap/1000) COP

For SI:EC = [(EF) - 32] / 1.8, 1 British thermal unit per hour = 0.2931W.db = dry-bulb tem per a ture, EFwb = wet-bulb tem per a ture, EFa. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.b. Cap means the rated cool ing ca pac ity of the prod uct in Btu/h. If the unit’s ca pac ity is less than 7,000 Btu/h, use 7,000 Btu/h in the cal cu la tion. If the unit’s ca pac ity

is greater than 15,000 Btu/h, use 15,000 Btu/h in the cal cu la tion.c. Re place ment units must be fac tory la beled as fol lows: “MAN U FAC TURED FOR RE PLACE MENT AP PLI CA TIONS ONLY; NOT TO BE IN STALLED IN

NEW CON STRUC TION PRO JECTS.” Re place ment ef fi cien cies ap ply only to units with ex ist ing sleeves less than 16 inches (406 mm) high and less than 42inches (1067 mm) wide.



TABLE 803.2.2(5)BOILERS, GAS- AND OIL-FIRED, MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPEfSIZE CATEGORY

(INPUT)SUBCATEGORY OR RATING

CONDITIONMINIMUM

EFFICIENCYc, d, e TEST PROCEDUREa

Boilers, Gas fired

< 300,000 Btu/hHot water 80% AFUE DOE 10 CFR

Part 430Steam 75% AFUE

≥ 300,000 Btu/h and ≤ 2,500,000 Btu/h

Minimum capacityb 75% Et

H.I. HBS 86

> 2,500,000 Btu/hfHot water 80% Ec

Steam 80% Ec

Boilers, Oil fired

< 300,000 Btu/h — 80% AFUE DOE 10 CFR

Part 430

≥ 300,000 Btu/h and≤ 2,500,000 Btu/h

Minimum capacityb 78% Et

H.I. HBS 86


Steam 83% Ec

Boilers, Oil fired (Residual)

≥ 300,000 Btu/h and≤ 2,500,000 Btu/h Minimum capacityb 78% Et

H.I. HBS 86


Steam 83% Ec

For SI: 1 British thermal unit per hour = 0.2931W.a. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.b. Min i mum rat ings as pro vided for and al lowed by the unit’s con trols.c. Ec = Com bus tion ef fi ciency (100 per cent less flue losses). See ref er ence doc u ment for de tailed in for ma tion.d. Et = Ther mal ef fi ciency. See ref er ence doc u ment for de tailed in for ma tion.e. Al ter na tive test pro ce dures used at the man u fac turer’s op tion are ASME PTC-4.1 for units greater than 5,000,000 Btu/h in put, or ANSI Z21.13 for units greater

than or equal to 300,000 Btu/h and less than or equal to 2,500,000 Btu/h in put.f. These re quire ments ap ply to boil ers with rated in put of 8,000,000 Btu/h or less that are not pack aged boil ers, and to all pack aged boil ers. Min i mum ef fi ciency re -

quire ments for boil ers cover all ca pac i ties of pack aged boil ers.

TABLE 803.2.6MINIMUM EQUIPMENT EFFICIENCY ECONOMIZER EXCEPTION

TOTAL COOLING CAPACITY OFEQUIPMENT

BUILDING LOCATION

Zones 6a, 9a, 10a, 11a, 12a, 12b, 13a, 13b, 14a, 14b, 15-19 Zones 3a, 3b, 4a, 7a, 8, 9b, 10b, 11b Zones 4b, 5a, 5b, 6b, 7b

90,000 Btu/h to 134,999 Btu/h Not Applicable 11.4 EER 10.4 EER

135,000 Btu/h to 759,999 Btu/h Not Applicable 10.9 EER 9.9 EER

760,000 Btu/h or more Not Applicable 10.5 EER 9.6 EER

For SI: °C = [(°F)-32]/1.8, 1 British thermal unit per hour = 0.2931 W.

803.2.7 Shut off damp ers. Out door air sup ply and ex haustducts shall be pro vided with au to matic means to re duce andshut off air flow.

Ex cep tions:

1. Sys tems serv ing ar eas de signed for con tin u ous op -er a tion.

2. In di vid ual sys tems with a max i mum 3,000 cfm(1416 L/s) air flow rate.

3. Sys tems with readily ac ces si ble man ual damp ers.4. Where re stricted by health and life safety codes.

803.2.8 Duct and ple num in su la tion and seal ing. All sup -ply and re turn air ducts and ple nums shall be in su lated witha min i mum of R-5 in su la tion when lo cated in un con di tioned spaces and with a min i mum of R-8 in su la tion when lo catedout side the build ing. When lo cated within a build ing en ve -lope as sem bly, the duct or ple num shall be sep a rated fromthe build ing ex te rior or un con di tioned or ex empt spaces by a min i mum of R-8 in su la tion.

Ex cep tions:

1. When lo cated within equip ment.

2. When the de sign tem per a ture dif fer ence be tweenthe in te rior and ex te rior of the duct or ple num doesnot ex ceed 15°F (8°C).

All joints, lon gi tu di nal and trans verse seams and con nec -tions in ductwork, shall be se curely fas tened and sealed with welds, gas kets, mastics (ad he sives), mas tic-plus-em bed -ded-fab ric sys tems, or tapes. Tapes and mastics used to sealductwork shall be listed and la beled in ac cor dance with UL181A or UL 181B. Duct con nec tions to flanges of air dis tri -bu tion sys tem equip ment shall be sealed and me chan i callyfas tened. Un listed duct tape is not per mit ted as a seal ant onany metal ducts.

803.2.8.1 Duct con struc tion. Ductwork shall be con -structed and erected in ac cor dance with the In ter na tional Me chan i cal Code.

803.2.8.1.1 High- and me dium-pres sure duct sys -tems. All ducts and ple nums op er at ing at a static pres -sures greater than 2 inches w.g. (500 Pa) shall bein su lated and sealed in ac cor dance with Sec tion803.2.8. Ducts op er at ing at a static pres sures in ex cess of 3 inches w.g. (750 Pa) shall be leak tested in ac cor -dance with Sec tion 803.3.6. Pres sure clas si fi ca tionsspe cific to the duct sys tem shall be clearly in di catedon the con struc tion doc u ments in ac cor dance with theIn ter na tional Me chan i cal Code.

803.2.8.1.2 Low-pres sure duct sys tems. All lon gi tu -di nal and trans verse joints, seams and con nec tions ofsup ply and re turn ducts op er at ing at a static pres sureless than or equal to 2 inches w.g. (500 Pa) shall be se -curely fas tened and sealed with welds, gas kets,mastics (ad he sives), mas tic-plus-em bed ded-fab ricsys tems or tapes in stalled in ac cor dance with the man -u fac turer’s in stal la tion in struc tions. Pres sure clas si fi -ca tions spe cific to the duct sys tem shall be clearly

in di cated on the con struc tion doc u ments in ac cor -dance with the In ter na tional Me chan i cal Code.

Ex cep tion: Con tin u ously welded and lock -ing-type lon gi tu di nal joints and seams on ducts op -er at ing at static pres sures less than 2 inches w.g.(500 Pa) pres sure clas si fi ca tion.

803.2.9 Pip ing in su la tion. All pip ing serv ing as part of aheat ing or cool ing sys tem shall be ther mally in su lated in ac -cor dance with Sec tion 803.3.7.

803.3 Com plex HVAC sys tems and equip ment. This sec tionap plies to build ings served by HVAC equip ment and sys temsnot cov ered in Sec tion 803.2.

803.3.1 Cal cu la tion of heat ing and cool ing loads. De signloads shall be de ter mined in ac cor dance with Sec tion803.2.1.

803.3.1.1 Equip ment and sys tem siz ing. Heating andcool ing equip ment and sys tem ca pac ity shall not ex ceedthe loads cal cu lated in ac cor dance with Sec tion 803.2.1.

Ex cep tions:

1. Re quired standby equip ment and sys tems pro -vided with con trols and de vices that al low suchsys tems or equip ment to op er ate au to mat i callyonly when the pri mary equip ment is not op er at -ing.

2. Mul ti ple units of the same equip ment type withcom bined ca pac i ties ex ceed ing the de sign loadand pro vided with con trols that have the ca pa -bil ity to se quence the op er a tion of each unitbased on load.

803.3.2 HVAC equip ment per for mance re quire ments.Equip ment shall meet the min i mum ef fi ciency re quire ments of Ta bles 803.3.2(1) through 803.3.2(6) and Ta ble803.2.2(5), when tested and rated in ac cor dance with the ap -pli ca ble test pro ce dure. The ef fi ciency shall be ver i fiedthrough cer tif i ca tion un der an ap proved cer tif i ca tion pro -gram or, if no cer tif i ca tion pro gram ex ists, the equip ment ef -fi ciency rat ings shall be sup ported by data fur nished by theman u fac turer. Where mul ti ple rat ing con di tions or per for -mance re quire ments are pro vided, the equip ment shall sat -isfy all stated re quire ments. Where com po nents, such asin door or out door coils, from dif fer ent man u fac tur ers areused, cal cu la tions and sup port ing data shall be fur nished bythe de signer that dem on strate that the com bined ef fi ciencyof the spec i fied com po nents meets the re quire ments herein.

Where uni tary or pre pack aged equip ment is used in acom plex HVAC sys tem and is not cov ered by Sec tion803.3.2, the equip ment shall meet the ap pli ca ble re quire -ments of Sec tion 803.2.2.

Ex cep tion: Equip ment listed in Ta ble 803.3.2(2) not de -signed for op er a tion at ARI Stan dard test con di tions of44°F (7°C) leav ing chilled wa ter tem per a ture and 85°F(29°C) en ter ing con denser wa ter tem per a ture shall havea min i mum full load COP and IPLV rat ing as shown inTa bles 803.3.2(3) through 803.3.2(5) as ap pli ca ble. The



ta ble val ues are only ap pli ca ble over the fol low ing fullload de sign ranges:

Leaving Chilled Wa ter Tem per a ture: 40 to 48°F (4 to 9°C)

En tering Con denser Wa ter Tem per a ture: 75 to 85°F (24 to 29°C)

Con densing Wa ter Tem per a ture Rise: 5 to 15°F (∆3 to ∆8°C )

Chillers de signed to op er ate out side of these ranges arenot cov ered by this code.



TABLE 803.3.2(1)CONDENSING UNITS, ELECTRICALLY OPERATED, MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPE SIZE CATEGORYMINIMUM

EFFICIENCYb TEST PROCEDUREa

Condensing units,Air cooled

≥ 135,000 Btu/h10.1 EER11.2 IPLV

ARI 365Condensing units,

Water or evaporatively cooled ≥ 135,000 Btu/h13.1 EER13.1 IPLV

For SI: 1 British thermal unit per hour = 0.2931W.a. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.b. IPLVs are only ap pli ca ble to equip ment with ca pac ity mod u la tion.

TABLE 803.3.2(2)WATER CHILLING PACKAGES, MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPE SIZE CATEGORY MINIMUM

EFFICIENCYb TEST PROCEDUREa

Air cooled, with condenser,Electrically operated

< 150 tons2.80 COP2.80 IPLV

ARI 550/590

≥ 150 tons2.50 COP2.50 IPLV

Air cooled,without condenser,

Electrically operated All capacities

3.10 COP3.10 IPLV

Water cooled, Electrically operated, Positive displacement(reciprocating)

All capacities4.20 COP4.65 IPLV

Water cooled,Electrically operated,Positive displacement

(rotary screw and scroll)


≥ 150 tons and< 300 tons

4.90 COP4.95 IPLV


Water cooled, Electrically operated,

centrifugal


≥ 150 tons and< 300 tons

5.55 COP5.55 IPLV


Air cooled, absorptionsingle effect

All capacities 0.60 COP

ARI 560

Water cooled, absorptionsingle effect

All capacities 0.70 COP

Absorption double effect,indirect-fired


Absorption double effect,direct-fired


For SI: 1 ton = 3.517 kW, °C = [(°F) − 32] / 1.8.a. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.b. The chiller equip ment re quire ments do not ap ply for chill ers used in low tem per a ture ap pli ca tions where the de sign leav ing fluid tem per a ture is less than or equal

to 40oF.



TABLE 803.3.2(3)COPS AND IPLVS FOR NONSTANDARD CENTRIFUGAL CHILLERS < 150 TONS

CENTRIFUGAL CHILLERS < 150 TONSCOPstd = 5.4

Condenser flow rate

2 gpm/ton 2.5 gpm/ton 3 gpm/ton 4 gpm/ton 5 gpm/ton 6 gpm/ton

Leaving chilled watertemperature (°F)

Entering condenser watertemperature (°F) Lifta (°F) Required COP and IPLV

46 75 29 6.00 6.27 6.48 6.80 7.03 7.20

45 75 30 5.92 6.17 6.37 6.66 6.87 7.02

44 75 31 5.84 6.08 6.26 6.53 6.71 6.86

43 75 32 5.75 5.99 6.16 6.40 6.58 6.71

42 75 33 5.67 5.90 6.06 6.29 6.45 6.57

41 75 34 5.59 5.82 5.98 6.19 6.34 6.44

46 80 34 5.59 5.82 5.98 6.19 6.34 6.44

40 75 35 5.50 5.74 5.89 6.10 6.23 6.33

45 80 35 5.50 5.74 5.89 6.10 6.23 6.33

44 80 36 5.41 5.66 5.81 6.01 6.13 6.22

43 80 37 5.31 5.57 5.73 5.92 6.04 6.13

42 80 38 5.21 5.48 5.64 5.84 5.95 6.04

41 80 39 5.09 5.39 5.56 5.76 5.87 5.95

46 85 39 5.09 5.39 5.56 5.76 5.87 5.95

40 80 40 4.96 5.29 5.47 5.67 5.79 5.86

45 85 40 4.96 5.29 5.47 5.67 5.79 5.86

44 85 41 4.83 5.18 5.40 5.59 5.71 5.78

43 85 42 4.68 5.07 5.28 5.50 5.62 5.70

42 85 43 4.51 4.94 5.17 5.41 5.54 5.62

41 85 44 4.33 4.80 5.05 5.31 5.45 5.53

40 85 45 4.13 4.65 4.92 5.21 5.35 5.44

Condenser ∆Tb 14.04 11.23 9.36 7.02 5.62 4.68

For SI: EC = [(EF) - 32] / 1.8, 1 gallon per minute = 3.785 L/min., 1 ton = 12,000 British thermal unit per hour = 3.517 kW.a. Lift = En tering con denser wa ter tem per a ture (EF) – Leaving chilled wa ter tem per a ture (EF).b. Con denser )T = Leaving con denser wa ter tem per a ture (EF) – En tering con denser wa ter tem per a ture (EF).

Kadj = 6.1507 - 0.30244(X) + 0.0062692(X)2 - 0.000045595(X)

where: X = Con denser )T + Lift

COPadj = Kadj × COPstd



TABLE 803.3.2(4)COPs AND IPLVS FOR NONSTANDARD CENTRIFUGAL CHILLERS ≥ 150 TONS, ≤ 300 TONS

CENTRIFUGAL CHILLERS ≥ 150 Tons, ≤ 300 TonsCOPstd = 5.55

Condenser flow rate

2 gpm/ton 2.5 gpm/ton 3 gpm/ton 4 gpm/ton 5 gpm/ton 6 gpm/ton


Entering condenser water temperature (°F) Lifta (°F) Required COP and IPLV

46 75 29 6.17 6.44 6.66 6.99 7.23 7.40

45 75 30 6.08 6.34 6.54 6.84 7.06 7.22

44 75 31 6.00 6.24 6.43 6.71 6.90 7.05

43 75 32 5.91 6.15 6.33 6.58 6.76 6.89

42 75 33 5.83 6.07 6.23 6.47 6.63 6.75

41 75 34 5.74 5.98 6.14 6.36 6.51 6.62

46 80 34 5.74 5.98 6.14 6.36 6.51 6.62

40 75 35 5.65 5.90 6.05 6.26 6.40 6.51

45 80 35 5.65 5.90 6.05 6.26 6.40 6.51

44 80 36 5.56 5.81 5.97 6.17 6.30 6.40

43 80 37 5.46 5.73 5.89 6.08 6.21 6.30

42 80 38 5.35 5.64 5.80 6.00 6.12 6.20

41 80 39 5.23 5.54 5.71 5.91 6.03 6.11

46 85 39 5.23 5.54 5.71 5.91 6.03 6.11

40 80 40 5.10 5.44 5.62 5.83 5.95 6.03

45 85 40 5.10 5.44 5.62 5.83 5.95 6.03

44 85 41 4.96 5.33 5.55 5.74 5.86 5.94

43 85 42 4.81 5.21 5.42 5.66 5.78 5.86

42 85 43 4.63 5.08 5.31 5.56 5.69 5.77

41 85 44 4.45 4.93 5.19 5.46 5.60 5.69

40 85 45 4.24 4.77 5.06 5.35 5.50 5.59

Condenser ∆Tb 14.04 11.23 9.36 7.02 5.62 4.68


Kadj = 6.1507 - 0.30244(X) + 0.0062692(X)2 - 0.000045595(X)





TABLE 803.3.2(5)COPS AND IPLVS FOR NONSTANDARD CENTRIFUGAL CHILLERS > 300 TONS

CENTRIFUGAL CHILLERS > 300 TONSCOPstd = 6.1

Condenser Flow Rate

2gpm/ton

2.5gpm/ton 3 gpm/ton 4 gpm/ton 5 gpm/ton 6 gpm/ton


Entering CondenserWater Temperature (°F)

Lifta

(°F) Required COP and IPLV

46 75 29 6.80 7.11 7.35 7.71 7.97 8.16

45 75 30 6.71 6.99 7.21 7.55 7.78 7.96

44 75 31 6.61 6.89 7.09 7.40 7.61 7.77

43 75 32 6.52 6.79 6.98 7.26 7.45 7.60

42 75 33 6.43 6.69 6.87 7.13 7.31 7.44

41 75 34 6.33 6.60 6.77 7.02 7.18 7.30

46 80 34 6.33 6.60 6.77 7.02 7.18 7.30

40 75 35 6.23 6.50 6.68 6.91 7.06 7.17

45 80 35 6.23 6.50 6.68 6.91 7.06 7.17

44 80 36 6.13 6.41 6.58 6.81 6.95 7.05

43 80 37 6.02 6.31 6.49 6.71 6.85 6.94

42 80 38 5.90 6.21 6.40 6.61 6.75 6.84

41 80 39 5.77 6.11 6.30 6.52 6.65 6.74

46 85 39 5.77 6.11 6.30 6.52 6.65 6.74

40 80 40 5.63 6.00 6.20 6.43 6.56 6.65

45 85 40 5.63 6.00 6.20 6.43 6.56 6.65

44 85 41 5.47 5.87 6.10 6.33 6.47 6.55

43 85 42 5.30 5.74 5.98 6.24 6.37 6.46

42 85 43 5.11 5.60 5.86 6.13 6.28 6.37

41 85 44 4.90 5.44 5.72 6.02 6.17 6.27

40 85 45 4.68 5.26 5.58 5.90 6.07 6.17

Condenser ∆Tb 14.04 11.23 9.36 7.02 5.62 4.68


Kadj = 6.1507 - 0.30244(X) + 0.0062692(X)2 - 0.000045595(X)



803.3.3 HVAC sys tem con trols. Each heat ing and cool ingsys tem shall be pro vided with ther mo static con trols as re -quired in Sec tions 803.3.3.1 through 803.3.3.5.

803.3.3.1 Ther mo static con trols. The sup ply of heat ingand cool ing en ergy to each zone shall be con trolled by in -di vid ual ther mo static con trols ca pa ble of re spond ing totem per a ture within the zone. Where humidification ordehumidification or both is pro vided, at least one hu mid -ity con trol de vice shall be pro vided for each hu mid itycon trol sys tem

Ex cep tion: In de pend ent per im e ter sys tems that arede signed to off set only build ing en ve lope heat lossesor gains or both serv ing one or more per im e ter zonesalso served by an in te rior sys tem pro vided:

1. The per im e ter sys tem in cludes at least one ther -mo static con trol zone for each build ing ex po -sure hav ing ex te rior walls fac ing only oneori en ta tion (within +/- 45 de grees) (0.8 rad) formore than 50 con tig u ous feet (15.2 m); and,

2. The per im e ter sys tem heat ing and cool ing sup -ply is con trolled by a ther mo stat(s) lo catedwithin the zone(s) served by the sys tem.

803.3.3.1.1 Heat pump sup ple men tary heat. Heatpumps hav ing sup ple men tary elec tric re sis tance heatshall have con trols that, ex cept dur ing de frost, pre vent sup ple men tary heat op er a tion when the heat pumpcan meet the heat ing load.

803.3.3.2 Set point over lap re stric tion. Where used tocon trol both heat ing and cool ing, zone ther mo static con -trols shall pro vide a tem per a ture range or deadband of atleast 5°F (∆2.8°C) within which the sup ply of heat ing

and cool ing en ergy to the zone is ca pa ble of be ing shutoff or re duced to a min i mum.

Ex cep tion: Ther mo stats re quir ing man ual change -over be tween heat ing and cool ing modes.

803.3.3.3 Off-hour con trols. Each zone shall be pro -vided with ther mo static set back con trols that are con -trolled by ei ther an au to matic t ime clock orpro gram ma ble con trol sys tem.

Ex cep tions:

1. Zones that will be op er ated con tin u ously.

2. Zones with a full HVAC load de mand not ex -ceed ing 6,800 Btu/h (2 kW) and hav ing areadily ac ces si ble man ual shut off switch.

803.3.3.3.1 Ther mo static set back ca pa bil i ties.Ther mo static set back con trols shall have the ca pa bil -ity to set back or tem po rarily op er ate the sys tem tomain tain zone tem per a tures down to 55°F (13°C) orup to 85°F (29°C).

803.3.3.3.2 Au to matic set back and shut down ca -pa bil i ties. Au to matic time clock or pro gram ma blecon trols shall be ca pa ble of start ing and stop ping thesys tem for seven dif fer ent daily sched ules per weekand re tain ing their pro gram ming and time set ting dur -ing a loss of power for at least 10 hours. Ad di tionally,the con trols shall have: a man ual over ride that al lowstem po rary op er a tion of the sys tem for up to 2 hours; aman u ally op er ated timer ca pa ble of be ing ad justed toop er ate the sys tem for up to 2 hours; or an oc cu pancysen sor.

803.3.3.4 Shut off damper con trols. Both out door airsup ply and ex haust ducts shall be equipped with grav ity



TABLE 803.3.2(6)PERFORMANCE REQUIREMENTS FOR HEAT REJECTION EQUIPMENT

EQUIPMENT TYPE

TOTAL SYSTEM HEATREJECTION CAPACITYAT RATED CONDITIONS SUBCATEGORY OR RATING CONDITION

PERFORMANCEREQUIREDa,b

TESTPROCEDUREc

Propeller or axial fan cooling towers All95°F entering water85°F leaving water

75oF wb outdoor air $38.2 gpm/hp

CTI ATC-105and

CTI STD-201

Centrifugal fan cooling towers All95°F entering water85°F leaving water75°F wb outdoor air

$ 20.0 gpm/hpCTI ATC-105

andCTI STD-201

Air-cooled condensers All

125°F condensing temperatureR-22 test fluid

190°F entering gas temperature 15°F subcooling 95°F entering db

$176,000Btu/h"hp(69 COP)

ARI 460

For SI: °C = [ (°F) - 32 ] / 1.8, 1 British thermal unit per hour = 0.2931W, 1 gallon per minute per horsepower = 0.846 L/s ⋅ kW.wb = wet-bulb tem per a ture, EFa. For pur poses of this ta ble, cool ing tower per for mance is de fined as the max i mum flow rat ing of the tower units (gpm) di vided by the fan name plate rated mo tor

power units (hp).b. For pur poses of this ta ble, air-cooled con denser per for mance is de fined as the heat re jected from the re frig er ant units (Btu/h) di vided by the fan name plate rated

mo tor power units (hp).c. Chap ter 10 con tains a com plete spec i fi ca tion of the ref er enced test pro ce dure, in clud ing the ref er enced year ver sion of the test pro ce dure.

or mo tor ized damp ers that will au to mat i cally shut whenthe sys tems or spaces served are not in use.

Ex cep tion: In di vid ual sup ply sys tems with a de signair flow rate of 3,000 cfm (1416 L/s) or less.

803.3.3.5 Econ o miz ers. Econ o miz ers shall be pro videdon each sys tem with a cool ing ca pac ity greater than65,000 Btu/h (19 kW) in ac cor dance with Sec tion803.2.6.

Ex cep tions:

1. Wa ter econ o miz ers that are ca pa ble of cool ingsup ply air by di rect or in di rect evap o ra tion orboth and pro vid ing up to 100 per cent of the ex -pected sys tem cool ing load at out side air tem -per a tures of 50°F (10°C) dry bulb/45°F (7°C)wet bulb and be low.

2. Sys tems with a cool ing ca pac ity less than135,000 Btu/h (40 kW) in Cli mate Zones 3c,5b, 7, 13b, and 14.

803.3.3.6 Vari able air vol ume (VAV) fan con trol. In di -vid ual VAV fans with mo tors of 25 horse power (18.8kW) or greater shall be:

1. Driven by a me chan i cal or elec tri cal vari able speed drive; or

2. The fan mo tor shall have con trols or de vices thatwill re sult in fan mo tor de mand of no more than 30per cent of their de sign watt age at 50 per cent of de -sign air flow when static pres sure set point equalsone-third of the to tal de sign static pres sure, basedon man u fac turer’s cer ti fied fan data.

803.3.3.7 Hydronic sys tems con trols. The heat ing offlu ids that have been pre vi ously me chan i cally cooledand the cool ing of flu ids that have been pre vi ously me -chan i cally heated shall be lim ited in ac cor dance withSec tions 803.3.3.7.1 through 803.3.3.7.3. Hydronicheat ing sys tems com prised of mul ti ple-pack aged boil ersand de signed to de liver con di tioned wa ter or steam into acom mon dis tri bu tion sys tem shall in clude au to maticcon trols ca pa ble of se quenc ing op er a tion of the boil ers.Hydronic heat ing sys tems com prised of a sin gle boilerand greater than 500,000 Btu/h in put de sign ca pac ityshall in clude ei ther a multistaged or mod u lat ing burner.

803.3.3.7.1 Three-pipe sys tem. Hydronic sys temsthat use a com mon re turn sys tem for both hot wa terand chilled wa ter are pro hib ited.

803.3.3.7.2 Two-pipe change over sys tem. Sys temsthat use a com mon dis tri bu tion sys tem to sup ply bothheated and chilled wa ter shall be de signed to al low adead band be tween change over from one mode to theother of at least 15°F (∆8.3°C) out side air tem per a -tures; be de signed to and pro vided with con trols thatwill al low op er a tion in one mode for at least 4 hoursbe fore chang ing over to the other mode; and be pro -vided with con trols that al low heat ing and cool ingsup ply tem per a tures at the change over point to be nomore than 30EF (∆16.7EC) apart.

803.3.3.7.3 Hydronic (wa ter loop) heat pump sys -tems Hydronic heat pumps con nected to a com mon heat pump wa ter loop with cen tral de vices for heat re jec tionand heat ad di tion shall have con trols that are ca pa ble ofpro vid ing a heat pump wa ter sup ply tem per a ture deadband of at least 20°F (∆11.1°C) be tween ini ti a tion ofheat re jec tion and heat ad di tion by the cen tral de vices. For Cli mate Zones 5a to 19 as in di cated in Ta ble302.1, if a closed-cir cuit cool ing tower is used, ei theran au to matic valve shall be in stalled to by pass all but a min i mal flow of wa ter around the tower, or lowerleak age pos i tive clo sure damp ers shall be pro vided. Ifan open-cir cuit tower is used di rectly in the heat pump loop, an au to matic valve shall be in stalled to by passall heat pump wa ter flow around the tower. If anopen-cir cuit cool ing tower is used in con junc tion with a sep a rate heat exchanger to iso late the cool ing towerfrom the heat pump loop, then heat loss shall be con -trolled by shut ting down the cir cu la tion pump on thecool ing tower loop. Each hydronic heat pump on thehydronic sys tem hav ing a to tal pump sys tem powerex ceed ing 10 horse power (hp) (7.5 kW) shall have atwo-po si tion valve.

Ex cep tion: Where a sys tem loop tem per a ture op -ti mi za tion con trol ler is in stalled and can de ter mine the most ef fi cient op er at ing tem per a ture based onreal time con di tions of de mand and ca pac ity, deadbands of less than 20°F (11.1°C) shall be per mit ted.

803.3.3.7.4 Part load con trols. Hydronic sys temsgreater than or equal to 300,000 Btu/h (87,930 W) inde sign ca pac ity sup ply ing heated or chilled wa ter tocom fort con di tion ing sys tems shall in clude con trolsthat have the ca pa bil ity to:

1. Au to matically re set the sup ply wa ter tem per a -tures us ing zone re turn wa ter tem per a ture,build ing re turn wa ter tem per a ture, or out side air tem per a ture as an in di ca tor of build ing heat ingor cool ing de mand. The tem per a ture shall beca pa ble of be ing re set by at least 25 per cent ofthe de sign sup ply-to-re turn wa ter tem per a turedif fer ence; or

2. Re duce sys tem pump flow by at least 50 per cent of de sign flow rate uti liz ing ad just able speeddrive(s) on pump(s), mul ti ple staged pumpswhere at least one-half of the to tal pump horse -power is ca pa ble of be ing au to mat i cally turnedoff, con trol valves de signed to mod u late or stepdown, and close, as a func tion of load, or otherap proved means.

803.3.3.7.5 Pump iso la tion. Chilled wa ter plants in -clud ing more than one chiller shall have the ca pa bil ity to re duce flow au to mat i cally through the chiller plantwhen a chiller is shut down. Chillers piped in se riesfor the pur pose of in creased tem per a ture dif fer en tial,shall be con sid ered as one chiller.

Boiler plants in clud ing more than one boiler shallhave the ca pa bil ity to re duce flow au to mat i callythrough the boiler plant when a boiler is shut down.



803.3.3.8 Heat re jec tion equip ment fan speed con trol. Each fan pow ered by a mo tor of 7.5 hp (5.6 kW) or largershall have the ca pa bil ity to op er ate that fan at two-thirdsof full speed or less, and shall have con trols that au to mat -i cally change the fan speed to con trol the leav ing fluidtem per a ture or con dens ing tem per a ture/pres sure of theheat re jec tion de vice.

Ex cep tion: Fac tory-in stalled heat re jec tion de viceswithin HVAC equip ment tested and rated in ac cor -dance with Ta bles 803.3.2(1) through 803.3.2(6).

803.3.4 Re quire ments for com plex me chan i cal sys temsserv ing mul ti ple zones. Sec tions 803.3.4.1 through803.3.4.3 shall ap ply to com plex me chan i cal sys tems serv -ing mul ti ple zones. Sup ply air sys tems serv ing mul ti plezones shall be VAV sys tems which, dur ing pe ri ods of oc cu -pancy, are de signed and ca pa ble of be ing con trolled to re -duce pri mary air sup ply to each zone to one of the fol low ingbe fore re heat ing, recooling or mix ing takes place:

1. Thirty per cent of the max i mum sup ply air to eachzone.

2. Three hundred cfm (142 L/s) or less where the max i -mum flow rate is less than 10 per cent of the to tal fansys tem sup ply air flow rate.

3. The min i mum ven ti la tion re quire ments of Chap ter 4of the In ter na tional Me chan i cal Code.

Ex cep tion: The fol low ing de fine when in di vid ual zonesor when en tire air dis tri bu tion sys tems are ex emptedfrom the re quire ment for VAV con trol:

1. Zones where spe cial pres sur iza tion re la tion shipsor cross-con tam i na tion re quire ments are such thatVAV sys tems are im prac ti cal.

2. Zones or sup ply air sys tems where at least 75 per -cent of the en ergy for re heat ing or for pro vid ingwarm air in mix ing sys tems is pro vided from asite-re cov ered or site-so lar en ergy source.

3. Zones where spe cial hu mid ity lev els are re quiredto sat isfy pro cess needs.

4. Zones with a peak sup ply air quan tity of 300 cfm(142 L/s) or less and where the flow rate is less than 10 per cent of the to tal fan sys tem sup ply air flowrate.

5. Zones where the vol ume of air to be re heated,recooled or mixed is no greater than the vol ume ofout side air re quired to meet the min i mum ven ti la -tion re quire ments of Chap ter 4 of the In ter na tionalMe chan i cal Code.

6. Zones or sup ply air sys tems with ther mo static andhumidistatic con trols ca pa ble of op er at ing in se -quence the sup ply of heat ing and cool ing en ergy tothe zone(s) and which are ca pa ble of pre vent ing re -heat ing, recooling, mix ing or si mul ta neous sup plyof air that has been pre vi ously cooled, ei ther me -chan i cally or through the use of economizer sys -tems, and air that has been pre vi ouslyme chan i cally heated.

803.3.4.1 Sin gle duct vari able air vol ume (VAV) sys -tems, ter mi nal de vices. Sin gle duct VAV sys tems shalluse ter mi nal de vices ca pa ble of re duc ing the sup ply ofpri mary sup ply air be fore re heat ing or recooling takesplace.

803.3.4.2 Dual duct and mix ing VAV sys tems, ter mi -nal de vices. Sys tems that have one warm air duct andone cool air duct shall use ter mi nal de vices which are ca -pa ble of re duc ing the flow from one duct to a min i mumbe fore mix ing of air from the other duct takes place.

803.3.4.3 Sin gle fan dual duct and mix ing VAV sys -tems, econ o miz ers. In di vid ual dual duct or mix ing heat -ing and cool ing sys tems with a sin gle fan and with to talca pac i ties greater than 90,000 Btu/h [(26 375 W) 7.5tons] shall not be equipped with air econ o miz ers.

803.3.5 Ven ti la tion. Ven ti la tion shall be in ac cor dance with Sec tion 803.2.5.

803.3.6 Duct and ple num in su la tion and seal ing. Allducts and ple nums shall be in su lated and sealed in ac cor -dance with Sec tion 803.2.8.

Ducts de signed to op er ate at static pres sures in ex cess of 3inches w.g. (746 Pa) shall be leak-tested in ac cor dance withthe SMACNA HVAC Air Duct Leak age Test Man ual withthe rate of air leak age (CL) less than or equal to 6.0 as de ter -mined in ac cor dance with Equa tion 8-2.

CL = F × P 0.65 (Equa tion 8-2)

where:

F = The mea sured leak age rate in cfm per 100 squarefeet of duct sur face.

P = The static pres sure of the test.

Doc u men ta tion shall be fur nished by the de signer dem -on strat ing that rep re sen ta tive sec tions to tal ing at least 25per cent of the duct area have been tested and that all testedsec tions meet the re quire ments of this sec tion.

803.3.7 Pip ing in su la tion. All pip ing serv ing as part of aheat ing or cool ing sys tem shall be ther mally in su lated in ac -cor dance with Ta ble 803.3.7.

Ex cep tions:

1. Fac tory-in stalled pip ing within HVAC equip menttested and rated in ac cor dance with a test pro ce -dure ref er enced by this code.

2. Pip ing that con veys flu ids that have a de sign op er -at ing tem per a ture range be tween 55°F (13°C) and105°F (41°C).

3. Pip ing that con veys flu ids that have not beenheated or cooled through the use of fos sil fu els orelec tric power.

4. Run out pip ing not ex ceed ing 4 feet (1219 mm) inlength and 1 inch (25 mm) in di am e ter be tween thecon trol valve and HVAC coil.

803.3.8 HVAC sys tem com ple tion. Prior to the is su ance ofa cer tif i cate of oc cu pancy, the de sign pro fes sional shall pro -vide ev i dence of sys tem com ple tion in ac cor dance withSec tions 803.3.8.1 through 803.3.8.3.



á

803.3.8.1 Air sys tem bal anc ing. Each sup ply air out letand zone ter mi nal de vice shall be equipped with meansfor air bal anc ing in ac cor dance with the re quire ments ofChap ter 6 of the In ter na tional Me chan i cal Code. Dis -charge damp ers are pro hib ited on con stant vol ume fansand vari able vol ume fans with mo tors 25 hp (18.6 kW)and larger.

803.3.8.2 Hydronic sys tem bal anc ing. In di vid ualhydronic heat ing and cool ing coils shall be equippedwith means for bal anc ing and pres sure test con nec tions.

803.3.8.3 Man uals. The con struc tion doc u ments shallre quire that an op er at ing and main te nance man ual bepro vided to the build ing owner by the me chan i cal con -trac tor. The man ual shall in clude, at least, the fol low ing:

1. Equip ment ca pac ity (in put and out put) and re -quired main te nance ac tions.

2. Equip ment op er a tion and main te nance man u als.3. HVAC sys tem con trol main te nance and cal i bra -

tion in for ma tion, in clud ing wir ing di a grams, sche -mat ics, and con trol se quence de scrip tions.De sired or field-de ter mined setpoints shall be per -ma nently re corded on con trol draw ings, at con trolde vices or, for dig i tal con trol sys tems, in pro gram -ming com ments.

4. A com plete writ ten nar ra tive of how each sys tem is in tended to op er ate.

803.3.9 Heat re cov ery for ser vice wa ter heating. Con -denser heat re cov ery shall be in stalled for heat ing or re heat -ing of ser vice hot wa ter pro vided the fa cil ity op er ates 24hours a day, the to tal in stalled heat ca pac ity of wa ter-cooledsys tems ex ceeds 6,000,000 Btu/hr of heat re jec tion, and thede sign ser vice wa ter heat ing load ex ceeds 1,000,000 Btu/h.

The re quired heat re cov ery sys tem shall have the ca pac ity to pro vide the smaller of:

1. Sixty percent of the peak heat re jec tion load at de signcon di tions; or

2. The pre heat ing re quired to raise the peak ser vice hotwa ter draw to 85EF (29EC).

Ex cep tions:

1. Fa cil ities that em ploy con denser heat re cov ery forspace heat ing or re heat pur poses with a heat re cov -

ery de sign ex ceed ing 30 per cent of the peakwa ter-cooled con denser load at de sign con di tions.

2. Fa cil ities that pro vide 60 per cent of their ser vicewa ter heat ing from site so lar or site re cov ered en -ergy or from other sources


804.1 Gen eral. This sec tion cov ers the min i mum ef fi ciency of,and con trols for, ser vice wa ter-heat ing equip ment and in su la -tion of ser vice hot wa ter pip ing.

804.2 Ser vice wa ter-heat ing equip ment per for mance ef fi -ciency. Wa ter-heat ing equip ment and hot wa ter stor age tanksshall meet the re quire ments of Ta ble 804.2. The ef fi ciency shall be ver i fied through data fur nished by the man u fac turer orthrough cer tif i ca tion un der an ap proved cer tif i ca tion pro gram.

804.3 Tem per a ture con trols. Ser vice wa ter-heat ing equip -ment shall be pro vided with con trols to al low a setpoint of110°F (43°C) for equip ment serv ing dwell ing units and 90°F(32°C) for equip ment serv ing other oc cu pan cies. The out lettem per a ture of lav a to ries in pub lic fa cil ity rest rooms shall belim ited to 110°F (43°C).

804.4 Heat traps. Wa ter-heat ing equip ment not sup plied within te gral heat traps and serv ing noncirculating sys tems shall bepro vided with heat traps on the sup ply and dis charge pip ing as -so ci ated with the equip ment.

804.5 Pipe in su la tion. For au to matic-cir cu lat ing hot wa tersys tems, pip ing shall be in su lated with 1 inch (25 mm) ofinsula tion hav ing a con duc tiv ity not ex ceed ing 0.27 Btu perinch/h ⋅ ft2 ⋅ °F (1.53 W per 25 mm/m2 ⋅ K). The first 8 feet(2438 mm) of pip ing in noncirculating sys tems served byequip ment with out in te gral heat traps shall be in su lated with0.5 inch (12.7 mm) of ma te rial hav ing a con duc tiv ity notexceed ing 0.27 Btu per inch/h ⋅ ft2 ⋅ °F (1.53 W per 25 mm/m2

⋅ K).

804.6 Hot wa ter sys tem con trols. Au to matic-cir cu lat ing hotwa ter sys tem pumps or heat trace shall be ar ranged to be con ve -niently turned off au to mat i cally or man u ally when the hot wa -ter sys tem is not in op er a tion.



TABLE 803.3.7MINIMUM PIPE INSULATIONa


FLUID

NOMINAL PIPE DIAMETER

≤ 1.5″ > 1.5″

Steam 11/2 3

Hot water 1 2

Chilled water, brine or refrigerant 1 11/2

For SI: 1 inch = 25.4 mm, British thermal unit per inch/h ⋅ ft2 ⋅ °F = W per 25 mm/K ⋅ m2.a. Based on in su la tion hav ing a con duc tiv ity (k) not ex ceed ing 0.27 Btu per inch/h ⋅ ft2 ⋅ °F.



TABLE 804.2MINIMUM PERFORMANCE OF WATER-HEATING EQUIPMENT

EQUIPMENT TYPESIZE CATEGORY

(input)SUBCATEGORY OR RATING CONDITION PERFORMANCE REQUIREDb

TEST PROCEDURE

Water heaters, Electric

≤ 12 kW Resistance 0.93 - 0.00132V, EFDOE 10 CFR

Part 430

> 12 kW Resistance 1.73V + 155 SL, Btu/h ANSI Z21.10.3

≤ 24 amps and≤ 250 volts

Heat pump 0.93 - 0.00132V, EFDOE 10 CFR

Part 430

Storage water heaters, Gas

≤ 75,000 Btu/h ≥ 20 gal 0.62 - 0.0019V, EFDOE 10 CFR

Part 430

> 75,000 Btu/h and≤ 155,000 Btu/h

< 4,000 Btu/h/gal80% Et

( )Q / 800 110+ V SL, Btu/h ANSI Z21.10.3

> 155,000 Btu/h < 4,000 Btu/h/gal80% Et

( )Q / 800 110+ V SL, Btu/h

Instantaneous water heaters, Gas

> 50,000 Btu/h and< 200,000 Btu/hd ≥ 4,000 (Btu/h)/gal and < 2 gal 0.62 - 0.0019V EF

DOE 10 CFRPart 430

≥ 200,000 Btu/h ≥ 4,000 Btu/h/gal and < 10 gal 80% Et

ANSI Z21.10.3> 200,000 Btu/h ≥ 4,000 Btu/h/gal and ≥ 10 gal

80% Et

( )Q / 800 110+ V SL, Btu/h

Storage water heaters, Oil

≤ 105,000 Btu/h ≥20 gal 0.59 - 0.0019V, EFDOE 10 CFR

Part 430

> 105,000 Btu/h < 4,000 Btu/h/gal78% Et

( )Q / 800 110+ V SL, Btu/h ANSI Z21.10.3

Instantaneous water heaters, Oil

≤ 210,000 Btu/h ≥ 4,000 Btu/h/gal and < 2 gal 0.59 - 0.0019V, EF DOE 10 CFRPart 430

> 210,000 Btu/h ≥ 4,000 Btu/h/gal and < 10 gal 80% Et

ANSI Z21.10.3> 210,000 Btu/h ≥ 4,000 Btu/h/gal and ≥ 10 gal

78% Et

( )Q / 800 110+ V SL, Btu/h

Hot water supply boilers,Gas and Oil ≥ 300,000 Btu/h and

<12,500,000 Btu/h

≥ 4,000 Btu/h/gal and < 10 gal 80% Et

ANSI Z21.10.3Hot water supply boilers,

Gas and Oil≥ 4,000 Btu/h/gal and ≥ 10 gal

80% Et

( )Q / 800 110+ V SL, Btu/h

Pool heaters, Gas and Oil

All —- 78% Et ASHRAE 146

Unfired storage tanks All —- ≤ 6.5 Btu/h ⋅ ft2 (none)

For SI: °C = [(°F) - 32] / 1.8, 1 British thermal unit per hour = 0.2931 W, 1 gallon = 3.785 L, 1 British thermal unit per hour per gallon = 0.078 W/L.a . En ergy fac tor (EF) and ther mal ef fi ciency (Et) are min i mum re quire ments. In the EF equa tion, V is the rated vol ume in gal lonsb. Standby loss (SL) is the max i mum Btu/h based on a nom i nal 70°F tem per a ture dif fer ence be tween stored wa ter and am bi ent re quire ments. In the SL equa tion, Q is

the name plate in put rate in Btu/h. In the SL equa tion for elec tric wa ter heat ers, V is the rated vol ume in gal lons. In the SL equa tion for oil and gas wa ter heat ers andboil ers, V is the rated vol ume in gal lons.

c. In stan ta neous wa ter heat ers with in put rates be low 200,000 Btu/h must com ply with these re quire ments if the wa ter heater is de signed to heat wa ter to tem per a -tures 180°F or higher.

SECTION 805ELECTRICAL POWER AND LIGHTING SYSTEMS

805.1 Gen eral. This sec tion cov ers light ing sys tem con trols,the con nec tion of bal lasts, the max i mum light ing power for in -te rior ap pli ca tions, and min i mum ac cept able light ing equip -ment for ex te rior ap pli ca tions.

Ex cep tion: Lighting within dwell ing units.

805.2 Lighting con trols. Lighting sys tems shall be pro videdwith con trols as re quired in Sec tions 805.2.1, 805.2.2 and805.2.3.

805.2.1 In te rior light ing con trols. Each area en closed bywalls or floor-to-ceil ing par ti tions shall have at least oneman ual con trol for the light ing serv ing that area. The re -quired con trols shall be lo cated within the area served by the con trols or be a re mote switch that iden ti fies the lightsserved and in di cates their sta tus.

Ex cep tions:

1. Areas des ig nated as se cu rity or emer gency ar easthat must be con tin u ously lighted.

2. Lighting in stair ways or cor ri dors that are el e ments of the means of egress.

805.2.2 Ad di tional con trols. Each area that is re quired tohave a man ual con trol shall have ad di tional con trols thatmeet the re quire ments of Sec tions 805.2.2.1, 805.2.2.2 and805.2.2.3.

Ex cep tions:

1. Areas that have only one luminaire.

2. Areas that are con trolled by an oc cu pant-sens ingde vice.

3. Cor ri dors, store rooms, restrooms or pub lic lob -bies.

805.2.2.1 Light re duc tion con trols. Each area that is re -quired to have a man ual con trol shall also al low the oc cu -pant to re duce the con nected light ing load in a rea son ably uni form il lu mi na tion pat tern by at least 50 per cent.Lighting re duc tion shall be achieved by one of the fol -low ing or other ap proved method:

1. Con trolling all lamps or lu mi nar ies;

2. Dual switch ing of al ter nate rows of luminaires, al -ter nate luminaires or al ter nate lamps;

3. Switching the mid dle lamp luminaires in de pend -ently of the outer lamps; or

4. Switching each luminaire or each lamp.

Ex cep tions:

1. Areas that have only one luminaire.

2. Areas that are con trolled by an oc cu pant-sens -ing de vice.

3. Cor ri dors, store rooms, restrooms or pub lic lob -bies.

4. Guestrooms.5. Spaces that use less than 0.6 Watts per square

foot (6.5 W/m).

805.2.2.2 Au to matic light ing shut off. Build ings largerthan 5,000 square feet (465 m2) shall be equipped with anau to matic con trol de vice to shut off light ing in those ar -eas. This au to matic con trol de vice shall func tion on ei -ther:

1. A sched uled ba sis, us ing time-of-day, with an in -de pend ent pro gram sched ule that con trols the in te -rior light ing in ar eas that do not ex ceed 25,000square feet (2323 m2) and are not more than onefloor; or

2. An un sched uled ba sis by oc cu pant in ter ven tion.

805.2.2.2.1 Oc cu pant over ride. Where an au to matictime switch con trol de vice is in stalled to com ply withSec tion 805.2.2.2, Item 1, it shall in cor po rate an over -ride switch ing de vice that:

1. Is readily ac ces si ble.

2. Is lo cated so that a per son us ing the de vice cansee the lights or the area con trolled by thatswitch, or so that the area be ing lit is an nun ci -ated.

3. Is man u ally op er ated.4. Al lows the light ing to re main on for no more

than 2 hours when an over ride is ini ti ated.

5. Con trols an area not ex ceed ing 5,000 squarefeet (465 m2).

Ex cep tions:

1. In malls and ar cades, au di to ri ums, sin -gle-ten ant re tail spaces, in dus trial fa cil i tiesand are nas, where cap tive-key over ride isuti lized, over ride time may ex ceed 2 hours.

2. In malls and ar cades, au di to ri ums, sin -gle-ten ant re tail spaces, in dus trial fa cil i tiesand are nas, the area con trolled may not ex -ceed 20,000 square feet (1860 m2).

805.2.2.2.2 Hol i day sched uling. If an au to matic time switch con trol de vice is in stalled in ac cor dance withSec tion 805.2.2.2, Item 1, it shall in cor po rate an au to -matic hol i day sched ul ing fea ture that turns off allloads for at least 24 hours, then re sumes the nor mallysched uled op er a tion.

Ex cep tion: Re tail stores and as so ci ated malls, res -tau rants, gro cery stores, churches and the aters.

805.2.2.3 Guestrooms. Guestrooms in ho tels, mo tels,board ing houses or sim i lar build ings shall have at leastone mas ter switch at the main en try door that con trols allper ma nently wired light ing fix tures and switched re cep -ta cles, ex cept those in the bath room(s). Suites shall havea con trol meet ing these re quire ments at the en try to eachroom or at the pri mary en try to the suite.

805.2.3 Ex te rior light ing con trols. Au to matic switch ing or photocell con trols shall be pro vided for all ex te rior light ingnot in tended for 24-hour op er a tion. Au to matic timeswitches shall have a com bi na tion seven-day and sea sonalday light pro gram sched ule ad just ment, and a min i mum4-hour power backup.



805.3 Tan dem wir ing. The fol low ing luminaires lo catedwithin the same area shall be tan dem wired:

1. Flourescent luminaires equipped with one, three or odd-num bered lamp con fig u ra tions, that are re cess-mountedwithin 10 feet (3048 mm) cen ter-to-cen ter of each other.

2. Flourescent luminaires equipped with one, three or anyother odd-num bered lamp con fig u ra tion, that are pen -dant- or sur face-mounted within 1 foot (305 mm)edge-to-edge of each other.

Ex cep tions:

1. Where elec tronic high-fre quency bal lasts are used.

2. Luminaires on emer gency cir cuits.3. Luminaires with no avail able pair in the same area.

805.4 Exit signs. In ternally il lu mi nated exit signs shall not ex -ceed 5 Watts per side.

805.5 In te rior light ing power re quire ments. A build ingcom plies with this sec tion if its to tal con nected light ing powercal cu lated un der Sec tion 805.5.1 is no greater than the in te riorlight ing power cal cu lated un der Sec tion 805.5.2.

805.5.1 To tal con nected in te rior light ing power. The to talcon nected in te rior light ing power (Watts) shall be the sum of the watts of all in te rior light ing equip ment as de ter mined inac cor dance with Sec tions 805.5.1.1 through 805.5.1.4.

Ex cep tions: The con nected power as so ci ated with thefol low ing light ing equip ment is not in cluded in cal cu lat -ing to tal con nected light ing power.

1. Spe cial ized med i cal, den tal and re search light ing.2. Pro fes sional sports arena play ing field light ing.

3. Dis play light ing for ex hib its in gal ler ies, mu se umsand mon u ments.

4. Guestroom light ing in ho tels, mo tels, board inghouses or sim i lar build ings.

5. Emer gency light ing au to mat i cally off dur ing nor -mal build ing op er a tion.

805.5.1.1 Screw lamp hold ers. The watt age shall be themax i mum la beled watt age of the luminaire.

805.5.1.2 Low-volt age light ing. The watt age shall bethe spec i fied watt age of the trans former sup ply ing thesys tem.

805.5.1.3 Other luminaires. The watt age of all otherlight ing equip ment shall be the watt age of the light ingequip ment ver i fied through data fur nished by the man u -fac turer or other ap proved sources.

805.5.1.4 Line-volt age light ing track and plug-inbusway. The watt age shall be the greater of the watt ageof the luminaires de ter mined in ac cor dance with Sec -tions 805.5.1.1 through 805.5.1.3 or 30 W/lin ear foot(98W/lin m).

805.5.2 In te rior light ing power. The in te rior light ingpower shall be cal cu lated us ing Sec tion 805.5.2.1 or805.5.2.2 as ap pli ca ble.

805.5.2.1 En tire build ing method. Un der this ap -proach, the in te rior light ing power (Watts) is the valuefrom Ta ble 805.5.2 for the build ing type times the con di -tioned floor area of the en tire build ing. The in te rior light -ing power (Watts) shall not be in creased by theal low ances con tained in the foot notes of Ta ble 805.5.2when us ing the en tire build ing method.

805.5.2.2 Ten ant area or por tion of build ing method.The to tal in te rior light ing power (Watts) is the sum of allin te rior light ing pow ers for all ar eas in the build ing cov -ered in this per mit. The in te rior light ing power is the con -di tioned floor area for each area type listed in Ta ble805.5.2 times the value from Ta ble 805.5.2 for that area.For the pur poses of this method, an “area” shall be de -fined as all con tig u ous spaces that ac com mo date or areas so ci ated with a sin gle area type as listed in Ta ble805.5.2. When this method is used to cal cu late the to talin te rior light ing power for an en tire build ing, each areatype shall be treated as a sep a rate area.

805.6 Ex te rior light ing. When the power for ex te rior light ingis sup plied through the en ergy ser vice to the build ing, all ex te -rior light ing, other than low-volt age land scape light ing, shallhave a source ef fi cacy of at least 45 lumens per Watt.

Ex cep tion: Where ap proved be cause of his tor i cal, safety,sign age or emer gency con sid er ations.

805.7 Elec tri cal en ergy con sump tion. In build ings hav ing in -di vid ual dwell ing units, pro vi sions shall be made to de ter minethe elec tri cal en ergy con sumed by each ten ant by sep a ratelyme ter ing in di vid ual dwell ing units.

SECTION 806TOTAL BUILDING PERFORMANCE

806.1 Gen eral. The pro posed de sign com plies with this sec -tion where an nual en ergy costs of the pro posed de sign as de ter -mined in ac cor dance with Sec tion 806.3 do not ex ceed those ofthe stan dard de sign as de ter mined in ac cor dance with Sec tion806.4.

806.2 Anal y sis pro ce dures. Sec tions 806.2.1 through 806.2.8shall be ap plied in de ter min ing to tal build ing per for mance.

806.2.1 En ergy anal y sis. An nual (8,760 hours) en ergycosts for the stan dard de sign and the pro posed de sign shalleach be de ter mined us ing the same ap proved en ergy anal y -sis sim u la tion tool.

806.2.2 Cli mate data. The cli mate data used in the en ergyanal y sis shall cover a full cal en dar year (8,760 hours) andshall re flect ap proved co in ci dent hourly data for tem per a -ture, so lar ra di a tion, hu mid ity and wind speed for the build -ing lo ca tion.

806.2.3 En ergy rates. The an nual en ergy costs shall be es ti -mated us ing en ergy rates pub lished by the serv ing en ergysup plier and which would ap ply to the ac tual build ing orDOE State-Av er age En ergy Prices pub lished by DOE’s En -ergy In for ma tion Ad min is tra tion and which would ap ply tothe ac tual build ing.





TABLE 805.5.2INTERIOR LIGHTING POWER

BUILDING OR AREA TYPEENTIRE BUILDING

(W/ft2)TENANT AREA OR PORTION OF BUILDING

(W/ft2)

Auditorium Not Applicable 1.8

Automotive facility 0.9 Not Applicable

Bank/financial institution a Not Applicable 1.5

Classroom/lecture hall b Not Applicable 1.4

Convention, conference or meeting center a 1.2 1.3

Corridor, restroom, support area Not Applicable 0.9

Courthouse/town hall 1.2 Not Applicable

Dining a Not Applicable 0.9

Dormitory 1.0 NA

Exercise center a 1.0 0.9

Exhibition hall Not Applicable 1.3

Grocery store c 1.5 1.6

Gymnasium playing surface Not Applicable 1.4

Hotel function a 1.0 1.3

Industrial work, < 20-foot ceiling height Not Applicable 1.2

Industrial work, ≥ 20-foot ceiling height Not Applicable 1.7

Kitchen Not Applicable 1.2

Library a 1.3 1.7

Lobby—hotel a Not Applicable 1.1

Lobby—other a Not Applicable 1.3

Mall, arcade, or atrium Not Applicable 0.6

Medical and clinical care b, d 1.2 1.2

Motel 1.0 Not Applicable

Multifamily 0.7 Not Applicable

Museum b 1.1 1.0

Office b 1.0 1.1

Parking garage 0.3 Not Applicable

Penitentiary 1.0 Not Applicable

Police/fire station 1.0 Not Applicable

Post office 1.1 Not Applicable

Religious worship a 1.3 2.4

Restaurant a 1.6 0.9

Retail sales, wholesale showroom c 1.5 1.7

School 1.2 Not Applicable

Storage, industrial and commercial 0.8 0.8

Theaters—motion picture 1.2 1.2

Theaters—performance a 1.6 2.6

Transportation 1.0 Not Applicable

Other 0.6 1.0

For SI: 1 foot = 304.8 mm, 1 Watts per square foot = W/0.0929 m2.a. Where light ing equip ment is spec i fied to be in stalled for dec o ra tive ap pear ances in ad di tion to light ing equip ment spec i fied for gen eral light ing and is switched or

dimmed on cir cuits dif fer ent from the cir cuits for gen eral light ing, the smaller of the ac tual watt age of the dec o ra tive light ing equip ment or 1.0 W/ft2 times the areaof the space that the dec o ra tive light ing equip ment is in shall be added to the in te rior light ing power de ter mined in ac cor dance with this line item.

b. Where light ing equip ment is spec i fied to be in stalled to meet re quire ments of vi sual dis play ter mi nals as the pri mary view ing task, the smaller of the ac tual watt age of the light ing equip ment or 0.35 W/ft2 times the area of the space that the light ing equip ment is in shall be added to the in te rior light ing power de ter mined in ac cor -dance with this line item.

c. Where light ing equip ment is spec i fied to be in stalled to high light spe cific mer chan dise in ad di tion to light ing equip ment spec i fied for gen eral light ing and isswitched or dimmed on cir cuits dif fer ent from the cir cuits for gen eral light ing, the smaller of the ac tual watt age of the light ing equip ment in stalled spe cif i cally former chan dise, or 1.6 W/ft2 times the area of the spe cific dis play, or 3.9 W/ft2 times the ac tual case or shelf area for dis play ing and sell ing fine mer chan dise such asjew elry, fine ap parel and ac ces so ries, or china and sil ver, shall be added to the in te rior light ing power de ter mined in ac cor dance with this line item.

d. Where light ing equip ment is spec i fied to be in stalled, the smaller of the ac tual watt age of the light ing equip ment, or 1.0 W/ft2 times the area of the emer gency, re -cov ery, med i cal sup ply and phar macy space shall be added to the in te rior light ing power de ter mined in ac cor dance with this line item.

806.2.4 Nondepletable en ergy. Nondepletable en ergy col -lected off site shall be treated and priced the same as pur -chased en ergy. En ergy from nondepletable en ergy sourcescol lected on site shall be omit ted from the an nual en ergycost of the pro posed de sign. The anal y sis and per for manceof any nondepletable en ergy sys tem shall be de ter mined inac cor dance with ac cepted en gi neer ing prac tice us ing ap -proved meth ods.

806.2.5 Build ing op er a tion. Build ing op er a tion shall besim u lated for a full cal en dar year (8,760 hours). Op er atingsched ules shall in clude hourly pro files for daily op er a tionand shall ac count for vari a tions be tween week days, week -ends, hol i days, and any sea sonal op er a tion. Sched ules shallmodel the time-de pend ent vari a tions of oc cu pancy, il lu mi -na tion, re cep ta cle loads, ther mo stat set tings, me chan i calven ti la tion, HVAC equip ment avail abil ity, ser vice hot wa terus age, and any pro cess loads.

806.2.6 Sim u lated loads. The fol low ing sys tems and loadsshall be mod eled in de ter min ing to tal build ing per for mance: heat ing sys tems, cool ing sys tems, fan sys tems, light ingpower, re cep ta cle loads, and pro cess loads that ex ceed 1.0W/ft2 (W/0.0929 m2) of floor area of the room or space inwhich the pro cess loads are lo cated.

Ex cep tion: Sys tems and loads serv ing re quired emer -gency power only.

806.2.7 Ser vice wa ter-heat ing sys tems. Ser vice wa -ter-heat ing sys tems that are other than com bined ser vice hotwa ter/space-heat ing sys tems shall be be omit ted from theen ergy anal y sis pro vided all re quire ments in Sec tion 804have been met.

806.2.8 Ex te rior light ing. Ex te rior light ing sys tems shallbe the same as in the stan dard and pro posed de signs.

806.3 De ter mining en ergy costs for the pro posed de sign.Build ing sys tems and loads shall be sim u lated in the Pro posedde sign in ac cor dance with Sec tions 806.3.1 and 806.3.2.

806.3.1 HVAC and ser vice wa ter-heat ing equip ment. AllHVAC and ser vice wa ter-heat ing equip ment shall be sim u -lated in the pro posed de sign us ing ca pac i ties, rated ef fi cien -cies and part-load per for mance data for the pro posedequip ment as pro vided by the equip ment man u fac turer.

806.3.2 Fea tures not doc u mented at time of per mit. Ifany fea ture of the pro posed de sign is not in cluded in thebuild ing per mit ap pli ca tion, the en ergy per for mance of thatfea ture shall be as sumed to be that of the cor re spond ing fea -ture used in the cal cu la tions re quired in Sec tion 806.4.

806.4 De ter mining en ergy costs for the stan dard de sign.Sec tions 806.4.1 through 806.4.7 shall be used in de ter min ingthe an nual en ergy costs of the Stan dard de sign.

806.4.1 Equip ment ef fi ciency. The space-heat ing,space-cool ing, ser vice wa ter-heat ing, and ven ti la tion sys -tems and equip ment shall meet, but not ex ceed, the min i -mum ef fi ciency re quire ments of Sec tions 803 and 804.

806.4.2 HVAC sys tem ca pac i ties. HVAC sys tem ca pac i ties in the stan dard de sign shall be es tab lished such that nosmaller num ber of un met heat ing and cool ing load hours

and no larger heat ing and cool ing ca pac ity safety fac tors arepro vided than in the pro posed de sign.

806.4.3 En ve lope. The per for mance of el e ments of the ther -mal en ve lope of the stan dard de sign shall be de ter mined inac cor dance with the re quire ments of Sec tion 802.2 as ap pli -ca ble.

806.4.4 Iden ti cal char ac ter is tics. The heat ing/cool ingsys tem zon ing, the ori en ta tion of each build ing fea ture, thenum ber of floors and the gross en ve lope ar eas of the stan -dard de sign shall be the same as those of the pro posed de -sign ex cept as mod i fied by Sec tion 806.4.5 or 806.4.6.

Ex cep tion: Per ma nent fixed or mov able ex ter nal shad -ing de vices for win dows and glazed doors shall be ex -cluded from the stan dard de sign.

806.4.5 Win dow area. The win dow area of the stan dard de -sign shall be the same as the pro posed de sign, or 35 per centof the above-grade wall area, which ever is less, and shall bedis trib uted in a uni form pat tern equally over each build ingfacade.

806.4.6 Sky light area. The sky light area of the stan dard de -sign shall be the same as the pro posed de sign, or 3 per cent of the gross area of the roof as sem bly, which ever is less.

806.4.7 In te rior light ing. The light ing power for the stan -dard de sign shall be the max i mum al lowed in ac cor dancewith Sec tion 805.4. Where the oc cu pancy of the build ing isnot known, the light ing power den sity shall be 1.5 Watts persquare foot (16.1 W/m2).

806.5 Doc u men ta tion. The en ergy anal y sis and sup port ingdoc u men ta tion shall be pre pared by a reg is tered de sign pro fes -sional where re quired by the stat utes of the ju ris dic tion inwhich the pro ject is to be con structed. The in for ma tion doc u -ment ing com pli ance shall be sub mit ted in ac cor dance withSec tions 806.5.1 through 806.5.4

806.5.1 An nual en ergy use and as so ci ated costs. The an -nual en ergy use and costs by en ergy source of the stan dardde sign and the pro posed de sign shall be clearly in di cated.

806.5.2 En ergy-re lated fea tures. A list of the en ergy-re -lated fea tures that are in cluded in the pro posed de sign andon which com pli ance with the pro vi sions of the code areclaimed shall be pro vided to the code of fi cial. This list shallin clude and prom i nently in di cate all fea tures that dif ferfrom those set forth in Sec tion 806.4 and used in the en ergyanal y sis be tween the stan dard de sign and the pro posed de -sign.

806.5.3 In put and out put re port(s). In put and out put re -port(s) from the en ergy anal y sis sim u la tion pro gram con -tain ing the com plete in put and out put files, as ap pli ca ble.The out put file shall in clude en ergy use to tals and en ergyuse by en ergy source and end-use served, to tal hours thatspace con di tion ing loads are not met and any er rors or warn -ing mes sages gen er ated by the sim u la tion tool as ap pli ca ble.

806.5.4 Written ex pla na tion(s). An ex pla na tion of any er -ror or warn ing mes sages ap pear ing in the sim u la tion toolout put shall be pro vided in a writ ten, nar ra tive for mat.





TABLE 802.2(5)BUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 1a



Skylights (U-factor) 1

Slab or below-grade wall (R-value) R-0


PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny


All-wood joist/truss Metal joist/truss Concrete slab or deck Metal purlin with thermal block Metal purlin without thermal block

R-13R-13NA

R-19R-30

R-11R-12R-11R-12R-12

Floors over outdoor air or unconditioned space (R-value) Insulation between framing Continuous insulation

All-wood joist/truss Metal joist/truss Concrete slab or deck

R-0R-0NA

R-0R-0R-0


Framed R-value cav ity R-value con tin u ous CMU, ≥ 8 inches, with in te gral in su la tion R-value cav ity R-value con tin u ous Other ma sonry walls R-value cav ity R-value con tin u ous

NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-0R-0NA

R-0R-0R-0


Framed R-value cavity R-value continuous CMU, ≥ 8 inches, with integral insulation R-value cavity R-value continuous Other masonry walls R-value cavity R-value continuous

NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

(continued)



TABLE 802.2(5)—continuedBUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 1a






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-0R-0NA

R-0R-0R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.70.70.7



R-19R-25NA

R-25R-30

R-16R-17R-16R-17R-17



R-0R-0NA

R-0R-0R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

For SI: 1 inch = 25.4 mm.a. Values from Ta bles 802.2(5) through 802.2(37) shall be used for the pur pose of the com ple tion of Ta bles 802.2(1) through 802.2(4), as ap pli ca ble based on win -

dow and glazed door area.b. “NA” in di cates the con di tion is not ap pli ca ble.c. An R-value of zero in di cates no in su la tion is re quired.d. “Any” in di cates any avail able prod uct will com ply.e. “X” in di cates no com ply ing op tion ex ists for this con di tion.



TABLE 802.2(6)BUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 1b






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-0R-0NA

R-0R-0R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-0R-0NA

R-0R-0R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

(continued)



TABLE 802.2(6)—continuedBUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 1b






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-0R-0NA

R-0R-0R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.70.70.7



R-19R-19NA

R-25R-30

R-14R-15R-14R-15R-15



R-0R-0NA

R-0R-0R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-19X

R-13R-14R-13R-14R-14



R-0R-11NA

R-0R-4R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

AnyAnyAny



R-19R-19NA

R-19X

R-13R-14R-13R-14R-14



R-0R-11NA

R-0R-4R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-19R-19NA

R-19X

R-13R-14R-13R-14R-14



R-0R-11NA

R-0R-4R-0



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-19R-19NA

R-19R-25

R-13R-14R-13R-14R-14



R-0R-11NA

R-0R-4R-0



NANA

NAR-0

NAR-0

R-7R-0

R-0R-0

R-0R-0

R-7R-0

R-0R-0

R-0R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-1



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-1



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-1



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.70.70.7



R-19R-25NA

R-25R-30

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-1



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-11R-11NA

R-13R-25

R-9R-10R-9

R-10R-10



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-11R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.70.70.7



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-11R-0

R-0R-0

R-0R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

AnyAnyAny



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-7R-0

R-0R-0

R-0R-0

R-7R-0

R-0R-0

R-0R-0





TABLE 802.2(11)BUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 3c






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

AnyAnyAny



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

(continued)



TABLE 802.2(11)—continuedBUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 3c






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-11R-11NA

R-4R-4R-2



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-13R-13NA

R-19R-30

R-11R-12R-11R-12R-12



R-11R-11NA

R-4R-4R-3



NANA

NAR-0

NAR-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-3



NANA

NAR-0

NAR-0

R-11NA

R-0R-0

R-0R-0

R-11NA

R-0R-0

R-0R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-3



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.70.70.7



R-19R-19NA

R-19R-30

R-12R-13R-12R-13R-13



R-11R-11NA

R-4R-4R-3



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-4



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-11R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-4



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-4



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-19R-25NA

R-25R-30

R-16R-17R-16R-17R-17



R-11R-11NA

R-4R-4R-4



NANA

NAR-0

NAR-5

R-13R-3

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-11R-11NA

R-5R-6R-5



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-11R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-5R-6R-5



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-5R-6R-5



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.70.70.7



R-19R-25NA

R-25R-30

R-16R-17R-16R-17R-17



R-11R-11NA

R-5R-6R-5



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-11R-11NA

R-5R-6R-5



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-11R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-5R-6R-5



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-5R-6R-5



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-11R-11NA

R-5R-6R-5



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0








Skylights (U-factor) 0.8



PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-11R-13NA

R-19R-25

R-10R-11R-10R-11R-11



R-11R-11NA

R-7R-8R-7



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-11R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

AnyAnyAny



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-7R-8R-7



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-7R-8R-7



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.70.70.7



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-11R-11NA

R-7R-8R-7



NANA

NAR-0

NAR-5

R-13R-3

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0









Slab or below-grade wall (R-value) R-0Windows and glass doors SHGC U-factor

PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-6R-6R-6



NANA

NAR-0

NAR-0

R-11R-0

R-0R-0

R-0R-0

R-11R-0

R-0R-0

R-0R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-11R-11NA

R-6R-6R-6



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-6R-6R-6



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.70.70.7



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20

Floors over outdoor air or unconditioned space (R-value) Insulation between framing Continueous insulation


R-11R-11NA

R-6R-6R-6



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0





TABLE 802.2(18)BUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 7a






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-11R-11NA

R-8R-9R-8



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-8R-9R-8



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0

(continued)



TABLE 802.2(18)—continuedBUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 7a





Windows and glass doors SHGC U-factora

PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-8R-9R-8



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.70.70.7



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-11R-11NA

R-8R-9R-8



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

For SI: 1 inch = 25.4 mm.a. For build ings over three sto ries in height, the max i mum U-fac tor shall be 0.60.b. Values from Ta bles 802.2(5) through 802.2(37) shall be used for the pur pose of the com ple tion of Ta bles 802.2(1) through 802.2(4), as ap pli ca ble based on win -

dow and glazed door area.c. “NA” in di cates the con di tion is not ap pli ca ble.d. An R-value of zero in di cates no in su la tion is re quired.e. “Any” in di cates any avail able prod uct will com ply.f. “X” in di cates no com ply ing op tion ex ists for this con di tion.



TABLE 802.2(19)BUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 7b






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-11R-11NA

R-7R-8R-8



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-7R-8R-8



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)



TABLE 802.2(19)—continuedBUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 7b






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-7R-8R-8



NANA

NAR-5

NAR-6

R-13R-0

R-11R-0

R-13R-0

R-13R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.70.70.7



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-11R-11NA

R-7R-8R-8



NANA

NAR-5

NAR-6

R-13R-3

R-11R-0

R-13R-0

R-13R-0

R-11R-0

R-11R-0





TABLE 802.2(20)BUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 8






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-11R-11NA

R-9R-10R-9



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-9R-10R-9



NANA

NAR-5

NAR-6

R-13R-0

R-11R-0

R-13R-0

R-11R-0

R-11R-0

R-11R-0

(continued)



TABLE 802.2(20)—continuedBUILDING ENVELOPE REQUIREMENTSa through e - CLIMATE ZONE 8






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-11R-11NA

R-9R-10R-9



NANA

NAR-5

NAR-6

R-13R-0

R-11R-0

R-13R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.50.50.5



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-11R-11NA

R-9R-10R-9



NANA

NAR-5

NAR-6

R-13R-0

R-11R-0

R-13R-0

R-11R-0

R-11R-0

R-11R-0





TABLE 802.2(21)BUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 9a






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-19X

R-13R-14R-13R-14R-14



R-13R-13NA

R-12R-12R-12



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

0.70.70.7



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-13R-13NA

R-12R-12R-12



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)



TABLE 802.2(21)—continuedBUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 9a






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-13R-13NA

R-12R-12R-12



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.70.8

0.50.50.5



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-13R-13NA

R-12R-12R-12



NANA

NAR-5

NAR-5

R-13R-11

R-11R-0

R-11R-0

R-13R-5

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-15R-16R-15R-16R-16



R-13R-13NA

R-11R-12R-12



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.50.50.5



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-13R-13NA

R-11R-12R-12



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-13R-13NA

R-11R-12R-12



NANA

NAR-5

NAR-6

R-13R-0

R-11R-0

R-13R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.50.50.5



R-25R-25NA

R-30R-38

R-19R-20R-19R-20R-20



R-13R-13NA

R-11R-12R-12



NANA

NAR-5

NAR-6

R-13R-5

R-11R-0

R-13R-0

R-13R-3

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-19R-19NA

R-13R-13R-13



NANA

NAR-0

NAR-5

R-11R-0

R-0R-0

R-11R-0

R-11R-0

R-0R-0

R-11R-0






PF < 0.25 0.2 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

0.70.70.7



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-19R-19NA

R-13R-13R-13



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-19NA

R-13R-13R-13



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.40.40.4



R-25R-25NA

R-30R-30

R-19R-20R-19R-20R-20



R-19R-19NA

R-13R-13R-13



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-25NA

R-30X

R-17R-18R-17R-18R-18



R-19R-19NA

R-12R-13R-13



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-19NA

R-12R-13R-13



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-19NA

R-12R-13R-13



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.50.50.5



R-25R-25NA

R-30R-30

R-19R-20R-19R-20R-20



R-19R-19NA

R-12R-13R-13



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-19R-19NA

R-14R-14R-14



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

0.70.70.7



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-19R-19NA

R-14R-14R-14



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-19NA

R-14R-14R-14



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.40.40.4



R-25R-25NA

R-30R-30

R-19R-20R-19R-20R-20



R-19R-19NA

R-14R-14R-14



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-25R-25NA

R-30X

R-18R-19R-18R-19R-19



R-19R-19NA

R-14R-15R-15



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-19NA

R-14R-15R-15



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-19R-19NA

R-14R-15R-15



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.50.50.5



R-30R-30NA

R-30R-38

R-23R-24R-23R-24R-24



R-19R-19NA

R-14R-15R-15



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-19R-19NA

R-16R-16R-16



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-19NA

R-16R-16R-16



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-19R-19NA

R-16R-16R-16



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.40.40.4



R-30R-30NA

R-30R-38

R-23R-24R-23R-24R-24



R-19R-19NA

R-16R-16R-16



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-19R-25NA

R-25X

R-16R-17R-16R-17R-17



R-19R-19NA

R-15R-16R-16



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-19NA

R-15R-16R-16



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-19R-19NA

R-15R-16R-16



NANA

NAR-5

NAR-5

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.30.40.5

0.50.50.5



R-30R-30NA

R-38R-49

R-23R-24R-23R-24R-24



R-19R-19NA

R-15R-16R-16



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-13R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

0.70.70.7



R-19R-19NA

R-25X

R-14R-15R-14R-15R-15



R-19R-25NA

R-16R-17R-17



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.60.7Any

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-25NA

R-16R-17R-17



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-19R-25NA

R-16R-17R-17



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.40.40.4



R-30R-30NA

R-30R-38

R-23R-24R-23R-24R-24



R-19R-25NA

R-16R-17R-17



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

AnyAnyAny



R-25R-25NA

R-30NA

R-18R-19R-18R-19R-19



R-19R-25NA

R-17R-17R-17



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.50.50.5



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-19R-25NA

R-17R-17R-17



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-19R-25NA

R-17R-17R-17



NANA

NAR-5

NAR-5

R-13R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.40.40.4



R-30R-30NA

R-38R-49

R-23R-24R-23R-24R-24



R-19R-25NA

R-17R-17R-17



NANA

NAR-5

NAR-5

R-13R-7

R-11R-0

R-11R-0

R-13R-3

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

0.70.70.7



R-19R-25NA

R-30X

R-17R-18R-17R-18R-18



R-25R-25NA

R-18R-19R-19



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-25R-25NA

R-18R-19R-19



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-25NA

R-18R-19R-19



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.40.40.4



R-30R-30NA

R-38R-38

R-23R-24R-23R-24R-24



R-25R-25NA

R-18R-19R-19



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

0.70.70.7



R-25R-25NA

R-30NA

R-19R-20R-19R-20R-20



R-25R-25NA

R-19R-19R-19



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.50.50.5



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-25R-25NA

R-19R-19R-19



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-25NA

R-19R-19R-19



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.6

0.40.40.4



R-30R-30NA

R-38R-49

R-23R-24R-23R-24R-24



R-25R-25NA

R-19R-19R-19



NANA

NAR-5

NAR-5

R-13R-7

R-11R-0

R-11R-0

R-13R-3

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

AnyAnyAny

0.70.70.7



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-25R-30NA

R-22R-23R-22



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.50.50.5



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-25R-30NA

R-22R-23R-22



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.40.40.4



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-5

NAR-6

R-13R-3

R-11R-0

R-13R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.40.40.4



R-30R-30NA

R-38X

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-5

NAR-6

R-13R-7

R-13R-0

R-13R-3

R-13R-4

R-11R-0

R-11R-0











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.60.60.6



R-25R-25NA

R-30X

R-19R-20R-19R-20R-20



R-25R-30NA

R-22R-23R-22



NANA

NAR-5

NAR-5

R-13R-3

R-11R-0

R-11R-0

R-11R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-5

NAR-9

R-13R-3

R-11R-0

R-13R-3

R-11R-0

R-11R-0

R-11R-0

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.50.60.7

0.40.40.4



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-6

NAR-9

R-13R-3

R-13R-0

R-13R-3

R-13R-0

R-11R-0

R-13R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.40.40.4



R-30R-30NA

R-38X

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-10

NAR-9

R-13R-14

R-13R-3

R-13R-3

R-13R-7

R-13R-0

R-13R-3





TABLE 802.2(35)BUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 17






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-6

NAR-6

R-13R-3

R-13R-0

R-13R-0

R-13R-0

R-11R-0

R-11R-0






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.40.40.4



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-6

NAR-9

R-13R-3

R-13R-0

R-13R-3

R-13R-0

R-11R-0

R-11R-0

(continued)



TABLE 802.2(35)—continuedBUILDING ENVELOPE REQUIREMENTSb through f - CLIMATE ZONE 17





Windows and glass doors SHGCa U-factor

PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.40.40.4



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-10

NAR-10

R-13R-4

R-13R-4

R-13R-4

R-13R-3

R-13R-3

R-13R-3






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.40.50.7

0.40.40.4



R-30R-30NA

R-38X

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-14

NAR-14

R-13R-14

R-13R-10

R-13R-10

R-13R-14

R-13R-7

R-13R-7

For SI: 1 inch = 25.4 mm.a. For build ings over three sto ries in height, the max i mum SHGC shall be 0.60.b. Values from Ta bles 802.2(5) through 802.2(37) shall be used for the pur pose of the com ple tion of Ta bles 802.2(1) through 802.2(4), as ap pli ca ble based on win -










PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.60.60.6



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-9

NAR-10

R-13R-4

R-13R-3

R-13R-4

R-13R-3

R-13R-3

R-13R-3






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.40.40.4



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-9

NAR-10

R-13R-4

R-13R-3

R-13R-4

R-13R-3

R-13R-3

R-13R-3

(continued)






Skylights (U-factor) X

Slab or below-grade wall (R-value) X


PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

XXX

XXX



XXXXX

XXXXX



XXX

XXX



NANA

XX

XX

XX

XX

XX

XX

XX

XX






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

XXX

XXX



XXXXX

XXXXX



XXX

XXX



NANA

XX

XX

XX

XX

XX

XX

XX

XX











PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.50.50.5



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-9

NAR-10

R-13R-4

R-13R-3

R-13R-4

R-13R-3

R-13R-3

R-13R-3






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

0.7AnyAny

0.40.40.4



R-30R-30NAXX

R-23R-24R-23R-24R-24



R-25R-30NA

R-22R-23R-22



NANA

NAR-9

NAR-10

R-13R-4

R-13R-3

R-13R-4

R-13R-3

R-13R-3

R-13R-3

(continued)









PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

XXX

XXX



XXXXX

XXXXX



XXX

XXX



NANA

XX

XX

XX

XX

XX

XX

XX

XX






PF < 0.25 0.25 ≤ PF < 0.50 PF ≥ 0.50

XXX

XXX



XXXXX

XXXXX



XXX

XXX



NANA

XX

XX

XX

XX

XX

XX

XX

XX



CHAPTER 9

CLIMATE MAPS

SECTION 901GENERAL

901.1 Scope. The criteria of this chapter establish design con-ditions based on political boundaries for use with climate-de-pendent requirements in Chapters 5, 6 and 8, as applicable.

SECTION 902CLIMATE ZONES

902.1 General. The climate zone for use in Table 302.1 shallbe selected from the applicable map in Figures 902.1(1)through 902.1(51) corresponding to the state and county ofeach jurisdiction.


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Zone 5A

Zone 6B

Zone 7A

Zone 8

a. Counties identified with (H) shall be considered “hot and humid climate areas” for purposes of the application of Section 502.1.1.

FIGURE 902.1(1)ALABAMAa

Zone County

6B Autauga (H)

4B Baldwin (H)

5A Barbour (H)

6B Bibb (H)

7A Blount

5A Bullock (H)

5A Butler (H)

6B Calhoun (H)

6B Chambers (H)

7A Cherokee

6B Chilton (H)

5A Choctaw (H)

5A Clarke (H)

7A Clay

7A Cleburne

4B Coffee (H)

8 Colbert (H)

5A Conecuh (H)

6B Coosa (H)

4B Covington (H)

5A Crenshaw (H)

7A Cullman

4B Dale (H)

5A Dallas (H)

8 De Kalb

6B Elmore (H)

4B Escambia (H)

7A Etowah

7A Fayette

8 Franklin

4B Geneva (H)

5A Greene (H)

5A Hale (H)

4B Henry (H)

Zone County

4B Houston (H)

8 Jackson

6B Jefferson (H)

7A Lamar

8 Lauderdale

8 Lawrence

6B Lee (H)

8 Limestone

5A Lowndes (H)

6B Macon (H)

8 Madison

5A Marengo (H)

7A Marion

8 Marshall

4B Mobile (H)

5A Monroe (H)

6B Montgomery (H)

8 Morgan

5A Perry (H)

6B Pickens (H)

5A Pike (H)

7A Randolph

5A Russell (H)

6B Shelby (H)

6B St Clair (H)

5A Sumter (H)

6B Talladega (H)

6B Tallapoosa (H)

6B Tuscaloosa (H)

6B Walker (H)

5A Washington (H)

5A Wilcox (H)

7A Winston

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a. Borough refers to boroughs, united home rule municipalities and regional education attendance areas.

FIGURE 902.1(2)ALASKA

17 Kenai Peninsula

15 Ketchikan Gateway

16 Kodiak Island

18 Kuspuk

17 Lake and Peninsula

18 Lower Kuskokwim

18 Lower Yukon

17 Matanuska-Susitna

19 North Slope

19 Northwest Arctic

17 Pribilof Islands

15 Sitka

15 Southeast Island

17 Southwest Region

17 Yakutat

19 Yukon Flats

19 Yukon-Koyukuk

18 Yupiit

Zone Borougha

16 Adak Region

19 Alaska Gateway

17 Aleutian Region

17 Aleutians East

17 Anchorage

15 Annette Island

19 Bering Straits

17 Bristol Bay

16 Chatham

17 Chugach

18 Copper River

18 Delta/Greely

18 Denali

18 Fairbanks North Star

16 Haines

19 Iditarod Area

16 Juneau

18 Kashunamiut





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Zone 4B

Zone 6B

Zone 7B

Zone 8

Zone 10B

Zone 13B

Zone 14A

FIGURE 902.1(3)ARIZONA

Zone County

13B Apache

6B Cochise

14A Coconino

8 Gila

6B Graham

6B Greenlee

3C La Paz

3C Maricopa

7B Mohave

10B Navajo

4B Pima

4B Pinal

6B Santa Cruz

10B Yavapai

3C Yuma





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Zone 6B

Zone 7B

Zone 8

Zone 9B

7B Lee (H)

6B Lincoln (H)

6B Little River (H)

7B Logan (H)

7B Lonoke (H)

9B Madison

9B Marion

6B Miller (H)

8 Mississippi

7B Monroe (H)

8 Montgomery

6B Nevada (H)

9B Newton

6B Ouachita (H)

7B Perry (H)

7B Phillips (H)

7B Pike (H)

8 Poinsett

8 Polk

8 Pope

7B Prairie (H)

7B Pulaski (H)

8 Randolph

7B Saline (H)

7B Scott (H)

9B Searcy

8 Sebastian

7B Sevier (H)

8 Sharp

7B St Francis (H)

9B Stone

6B Union (H)

8 Van Buren

9B Washington

7B White (H)

7B Woodruff (H)

7B Yell (H)

Zone County

6B Arkansas (H)

6B Ashley (H)

9B Baxter

9B Benton

9B Boone

6B Bradley (H)

6B Calhoun (H)

9B Carroll

6B Chicot (H)

6B Clark (H)

8 Clay

8 Cleburne

6B Cleveland (H)

6B Columbia (H)

7B Conway (H)

8 Craighead

8 Crawford

7B Crittenden (H)

7B Cross (H)

6B Dallas (H)

6B Desha (H)

6B Drew (H)

7B Faulkner (H)

8 Franklin

8 Fulton

7B Garland (H)

6B Grant (H)

8 Greene

7B Hempstead (H)

7B Hot Spring (H)

7B Howard (H)

8 Independence

8 Izard

8 Jackson

6B Jefferson (H)

8 Johnson

6B Lafayette (H)

8 Lawrence


FIGURE 902.1(4)ARKANSASa





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Zone 3A

Zone 4A

Zone 4B

Zone 5A

Zone 5B

Zone 6A

Zone 6B

Zone 8

Zone 9A

Zone 9B

Zone 11A

Zone 13B

Zone 15

Zone County

6A Alameda

15 Alpine

8 Amador

6B Butte

8 Calaveras

6B Colusa

6A Contra Costa

9A Del Norte

8 El Dorado

6B Fresno

6B Glenn

9A Humboldt

3A Imperial

9B Inyo

5B Kern

6B Kings

8 Lake

13B Lassen

4A Los Angeles

6B Madera

6A Marin

8 Mariposa

8 Mendocino

6B Merced

15 Modoc

15 Mono

Zone County

6A Monterey

6A Napa

11A Nevada

4A Orange

8 Placer

13B Plumas

4B Riverside

6B Sacramento

6B San Benito

4B San Bernardino

3A San Diego

6A San Francisco

6A San Joaquin

6A San Luis Obispo

6A San Mateo

5A Santa Barbara

6A Santa Clara

6A Santa Cruz

6B Shasta

11A Sierra

11A Siskiyou

6A Solano

6A Sonoma

6B Stanislaus

6B Sutter

6B Tehama

9B Trinity

6B Tulare

8 Tuolumne

4A Ventura

6B Yolo

6B Yuba

FIGURE 902.1(5)CALIFORNIA





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Zone 11B

Zone 13B

Zone 15

Zone 16

Zone 17

FIGURE 902.1(6)COLORADO

Zone County

13B Adams

16 Alamosa

13B Arapahoe

16 Archuleta

11B Baca

11B Bent

13B Boulder

16 Chaffee

13B Cheyenne

17 Clear Creek

16 Conejos

16 Costilla

11B Crowley

16 Custer

13B Delta

13B Denver

15 Dolores

13B Douglas

15 Eagle

13B El Paso

13B Elbert

11B Fremont

15 Garfield

13B Gilpin

17 Grand

17 Gunnison

17 Hinsdale

11B Huerfano

17 Jackson

13B Jefferson

13B Kiowa

13B Kit Carson

Zone County

15 La Plata

17 Lake

13B Larimer

11B Las Animas

13B Lincoln

13B Logan

13B Mesa

17 Mineral

15 Moffat

15 Montezuma

13B Montrose

13B Morgan

11B Otero

15 Ouray

17 Park

13B Phillips

17 Pitkin

11B Prowers

11B Pueblo

15 Rio Blanco

17 Rio Grande

17 Routt

16 Saguache

17 San Juan

15 San Miguel

13B Sedgwick

17 Summit

13B Teller

13B Washington

13B Weld

13B Yuma





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Zone 12A

Zone 13A

Zone 14A

Zone County

12A Fairfield

13A Hartford

14A Litchfield

12A Middlesex

12A New Haven

12A New London

14A Tolland

14A Windham

FIGURE 902.1(7)CONNECTICUT





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Zone 9B

Zone 10B

Zone County

9B Kent

10B New Castle

9B Sussex

FIGURE 902.1(8)DELAWARE





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Zone 10B

Zone County

10B Washington

FIGURE 902.1(9)DISTRICT OF COLUMBIA

10

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Zone 1B

Zone 2A

Zone 3B

Zone 4B

Zone County

3B Alachua (H)

3B Baker (H)

4B Bay (H)

3B Bradford (H)

2A Brevard (H)

1B Broward (H)

4B Calhoun (H)

2A Charlotte (H)

2A Citrus (H)

3B Clay (H)

1B Collier (H)

3B Columbia (H)

1B Dade (H)

2A De Soto (H)

3B Dixie (H)

3B Duval (H)

4B Escambia (H)

3B Flagler (H)

4B Franklin (H)

4B Gadsden (H)

3B Gilchrist (H)

1B Glades (H)

4B Gulf (H)

3B Hamilton (H)

2A Hardee (H)

1B Hendry (H)

2A Hernando (H)

2A Highlands (H)

2A Hillsborough (H)

4B Holmes (H)

2A Indian River (H)

4B Jackson (H)

4B Jefferson (H)

3B Lafayette (H)

Zone County

2A Lake (H)

1B Lee (H)

4B Leon (H)

2A Levy (H)

4B Liberty (H)

3B Madison (H)

2A Manatee (H)

2A Marion (H)

1B Martin (H)

1B Monroe (H)

3B Nassau (H)

4B Okaloosa (H)

2A Okeechobee (H)

2A Orange (H)

2A Osceola (H)

1B Palm Beach (H)

2A Pasco (H)

2A Pinellas (H)

2A Polk (H)

3B Putnam (H)

4B Santa Rosa (H)

2A Sarasota (H)

2A Seminole (H)

3B St Johns (H)

2A St Lucie (H)

2A Sumter (H)

3B Suwannee (H)

3B Taylor (H)

3B Union (H)

2A Volusia (H)

4B Wakulla (H)

4B Walton (H)

4B Washington (H)


FIGURE 902.1(10)FLORIDAa

11





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GEORGIA

Zone 4B

Zone 5A

Zone 6B

Zone 7A

Zone 8

Zone County

4B Appling (H)

4B Atkinson (H)

4B Bacon (H)

4B Baker (H)

6B Baldwin (H)

7A Banks

7A Barrow

7A Bartow

Zone County

5A Ben Hill (H)

4B Berrien (H)

5A Bibb (H)

5A Bleckley (H)

4B Brantley (H)

4B Brooks (H)

4B Bryan (H)

5A Bulloch (H)

6B Burke (H)

7A Butts

5A Calhoun (H)

4B Camden (H)

5A Candler (H)

7A Carroll

8 Catoosa

4B Charlton (H)

4B Chatham (H)

Zone County

5A Chattahoochee (H)

8 Chattooga

8 Cherokee

7A Clarke

5A Clay (H)

7A Clayton

4B Clinch (H)

7A Cobb

5A Coffee (H)

4B Colquitt (H)

6B Columbia (H)

4B Cook (H)

7A Coweta

5A Crawford (H)

5A Crisp (H)

8 Dade

8 Dawson

7A De Kalb

4B Decatur (H)

5A Dodge (H)

5A Dooly (H)

5A Dougherty (H)

7A Douglas

5A Early (H)

4B Echols (H)

4B Effingham (H)

7A Elbert

5A Emanuel (H)

4B Evans (H)

8 Fannin

7A Fayette

7A Floyd

8 Forsyth

7A Franklin

Zone County

7A Fulton

8 Gilmer

6B Glascock (H)

4B Glynn (H)

8 Gordon

4B Grady (H)

6B Greene (H)

7A Gwinnett

8 Habersham

7A Hall

6B Hancock (H)

7A Haralson

6B Harris (H)

7A Hart

6B Heard (H)

7A Henry

5A Houston (H)

5A Irwin (H)

7A Jackson

6B Jasper (H)

4B Jeff Davis (H)

6B Jefferson (H)

5A Jenkins (H)

5A Johnson (H)

6B Jones (H)

6B Lamar (H)

4B Lanier (H)

5A Laurens (H)

5A Lee (H)

4B Liberty (H)

6B Lincoln (H)

4B Long (H)

4B Lowndes (H)

8 Lumpkin

5A Macon (H)

7A Madison

5A Marion (H)

6B McDuffie (H)

4B McIntosh (H)

6B Meriwether (H)

4B Miller (H)

4B Mitchell (H)

6B Monroe (H)

5A Montgomery (H)

6B Morgan (H)

8 Murray

5A Muscogee (H)

7A Newton

7A Oconee

7A Oglethorpe

Zone County

7A Paulding

5A Peach (H)

8 Pickens

4B Pierce (H)

6B Pike (H)

7A Polk

5A Pulaski (H)

6B Putnam (H)

5A Quitman (H)

8 Rabun

5A Randolph (H)

6B Richmond (H)

7A Rockdale

5A Schley (H)

5A Screven (H)

4B Seminole (H)

7A Spalding

7A Stephens

5A Stewart (H)

5A Sumter (H)

5A Talbot (H)

6B Taliaferro (H)

4B Tattnall (H)

5A Taylor (H)

5A Telfair (H)

5A Terrell (H)

4B Thomas (H)

5A Tift (H)

4B Toombs (H)

8 Towns

5A Treutlen (H)

5A Troup (H)

6B Turner (H)

5A Twiggs (H)

5A Union

8 Upson (H)

5A Walker

8 Walton

7A Ware (H)

4B Warren (H)

6B Washington (H)

6B Wayne (H)

4B Webster (H)

5A Wheeler (H)

5A White

8 Whitfield

8 Wilcox (H)

5A Wilkes

7A Wilkinson (H)

5A Worth (H)


FIGURE 902.1(11)GEORGIAa

12





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Zone 1A

Zone County

1A Hawaii (H)

1A Honolulu (H)

1A Kalawao(H)

1A Kauai H)

1A Maui (H)


FIGURE 902.1(12)HAWAIIa

13





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Zone 13B

Zone 14A

Zone 14B

Zone 15

Zone 16

FIGURE 902.1(13)IDAHO

Zone County

12B Ada

15 Adams

15 Bannock

15 Bear Lake

14A Benewah

15 Bingham

16 Blaine

15 Boise

15 Bonner

15 Bonneville

15 Boundary

16 Butte

15 Camas

12B Canyon

15 Caribou

14B Cassia

15 Clark

12B Clearwater

16 Custer

13B Elmore

15 Franklin

16 Fremont

Zone County

13B Gem

13B Gooding

15 Idaho

16 Jefferson

14B Jerome

14A Kootenai

14A Latah

15 Lemhi

15 Lewis

15 Lincoln

16 Madison

15 Minidoka

12B Nez Perce

15 Oneida

12B Owyhee

12B Payette

15 Power

14A Shoshone

16 Teton

14B Twin Falls

16 Valley

13B Washington

14





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Zone 10B

Zone 11B

Zone 12B

Zone 13B

Zone 14B

Zone County

12B Adams

10B Alexander

11B Bond

14B Boone

12B Brown

13B Bureau

11B Calhoun

14B Carroll

12B Cass

12B Champaign

11B Christian

12B Clark

11B Clay

10B Clinton

12B Coles

14B Cook

11B Crawford

12B Cumberland

14B De Kalb

12B De Witt

12B Douglas

14B Du Page

12B Edgar

11B Edwards

11B Effingham

11B Fayette

13B Ford

10B Franklin

13B Fulton

10B Gallatin

11B Greene

13B Grundy

10B Hamilton

13B Hancock

Zone County

10B Hardin

13B Henderson

13B Henry

13B Iroquois

10B Jackson

11B Jasper

11B Jefferson

10B Jersey

14B Jo Daviess

10B Johnson

14B Kane

13B Kankakee

13B Kendall

13B Knox

13B La Salle

14B Lake

11B Lawrence

14B Lee

13B Livingston

12B Logan

12B Macon

11B Macoupin

10B Madison

11B Marion

13B Marshall

12B Mason

10B Massac

13B McDonough

14B McHenry

12B McLean

12B Menard

13B Mercer

10B Monroe

11B Montgomery

Zone County

12B Morgan

12B Moultrie

14B Ogle

13B Peoria

10B Perry

12B Piatt

12B Pike

10B Pope

10B Pulaski

13B Putnam

10B Randolph

11B Richland

13B Rock Island

10B Saline

12B Sangamon

12B Schuyler

12B Scott

11B Shelby

10B St Clair

13B Stark

14B Stephenson

12B Tazewell

10B Union

12B Vermilion

11B Wabash

13B Warren

10B Washington

11B Wayne

10B White

14B Whiteside

13B Will

10B Williamson

14B Winnebago

13B Woodford

FIGURE 902.1(14)ILLINOIS

15





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Zone 10B

Zone 11B

Zone 12B

Zone 13B

Zone 14A

Zone County

13B Adams

13B Allen

11B Bartholomew

13B Benton

13B Blackford

12B Boone

11B Brown

13B Carroll

13B Cass

10B Clark

12B Clay

13B Clinton

11B Crawford

11B Daviess

13B De Kalb

11B Dearborn

12B Decatur

13B Delaware

11B Dubois

13B Elkhart

12B Fayette

10B Floyd

12B Fountain

12B Franklin

14A Fulton

10B Gibson

13B Grant

11B Greene

12B Hamilton

12B Hancock

10B Harrison

Zone County

12B Hendricks

12B Henry

13B Howard

14A Huntington

11B Jackson

13B Jasper

13B Jay

10B Jefferson

11B Jennings

12B Johnson

11B Knox

14A Kosciusko

13B La Porte

14A Lagrange

13B Lake

11B Lawrence

13B Madison

12B Marion

13B Marshall

11B Martin

14A Miami

11B Monroe

12B Montgomery

12B Morgan

13B Newton

14A Noble

11B Ohio

11B Orange

12B Owen

12B Parke

10B Perry

Zone County

11B Pike

13B Porter

10B Posey

13B Pulaski

12B Putnam

13B Randolph

11B Ripley

12B Rush

11B Scott

12B Shelby

10B Spencer

13B St Joseph

13B Starke

14A Steuben

11B Sullivan

10B Switzerland

13B Tippecanoe

13B Tipton

12B Union

10B Vanderburgh

12B Vermillion

12B Vigo

14A Wabash

12B Warren

10B Warrick

11B Washington

12B Wayne

13B Wells

13B White

14A Whitley

FIGURE 902.1(15)INDIANA

16





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Zone 13B

Zone 14B

Zone 15

Zone County

14B Adair

13B Adams

15 Allamakee

13B Appanoose

14B Audubon

14B Benton

15 Black Hawk

14B Boone

Zone County

15 Bremer

15 Buchanan

15 Buena Vista

15 Butler

15 Calhoun

14B Carroll

14B Cass

14B Cedar

Zone County

15 Cerro Gordo

15 Cherokee

15 Chickasaw

13B Clarke

15 Clay

15 Clayton

13B Clinton

14B Crawford

Zone County

14B Dallas

13B Davis

13B Decatur

15 Delaware

13B Des Moines

15 Dickinson

14B Dubuque

15 Emmet

Zone County

15 Fayette

15 Floyd

15 Franklin

13B Fremont

14B Greene

15 Grundy

14B Guthrie

15 Hamilton

Zone County

15 Hancock

15 Hardin

14B Harrison

13B Henry

15 Howard

15 Humboldt

15 Ida

14B Iowa

Zone County

14B Jackson

14B Jasper

13B Jefferson

13B Johnson

14B Jones

13B Keokuk

15 Kossuth

13B Lee

14B Linn

13B Louisa

13B Lucas

15 Lyon

14B Madison

13B Mahaska

13B Marion

14B Marshall

13B Mills

Zone County

15 Mitchell

14B Monona

13B Monroe

13B Montgomery

13B Muscatine

15 O’Brien

15 Osceola

13B Page

15 Palo Alto

15 Plymouth

15 Pocahontas

14B Polk

14B Pottawattamie

14B Poweshiek

13B Ringgold

15 Sac

13B Scott

14B Shelby

15 Sioux

14B Story

14B Tama

13B Taylor

13B Union

13B Van Buren

13B Wapello

14B Warren

13B Washington

13B Wayne

15 Webster

15 Winnebago

15 Winneshiek

15 Woodbury

15 Worth

15 Wright

FIGURE 902.1(16)IOWA

17





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Zone 9B

Zone 10B

Zone 11B

Zone 12B

Zone 13B

Zone County

10B Allen

10B Anderson

11B Atchison

9B Barber

11B Barton

10B Bourbon

11B Brown

10B Butler

10B Chase

9B Chautauqua

Zone County

9B Cherokee

13B Cheyenne

10B Clark

11B Clay

12B Cloud

10B Coffey

9B Comanche

9B Cowley

9B Crawford

13B Decatur

Zone County

11B Dickinson

11B Doniphan

10B Douglas

11B Edwards

9B Elk

12B Ellis

11B Ellsworth

11B Finney

11B Ford

10B Franklin

Zone County

11B Geary

12B Gove

12B Graham

11B Grant

11B Gray

12B Greeley

10B Greenwood

11B Hamilton

9B Harper

11B Harvey

Zone County

11B Haskell

11B Hodgeman

11B Jackson

11B Jefferson

12B Jewell

11B Johnson

11B Kearny

10B Kingman

10B Kiowa

9B Labette

Zone County

12B Lane

11B Leavenworth

11B Lincoln

10B Linn

12B Logan

11B Lyon

11B Marion

12B Marshall

11B McPherson

10B Meade

Zone County

10B Miami

12B Mitchell

9B Montgomery

11B Morris

10B Morton

11B Nemaha

9B Neosho

12B Ness

13B Norton

10B Osage

Zone County

12B Osborne

11B Ottawa

11B Pawnee

12B Phillips

11B Pottawatomie

10B Pratt

13B Rawlins

11B Reno

12B Republic

11B Rice

11B Riley

12B Rooks

11B Rush

11B Russell

11B Saline

12B Scott

10B Sedgwick

10B Seward

11B Shawnee

12B Sheridan

13B Sherman

12B Smith

11B Stafford

11B Stanton

10B Stevens

9B Sumner

13B Thomas

12B Trego

11B Wabaunsee

12B Wallace

12B Washington

12B Wichita

9B Wilson

10B Woodson

11B Wyandotte

FIGURE 902.1(17)KANSAS

18





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Zone 9B

Zone 10B

Zone 11B

KENTUCKY

CountyZone

Adair9BAllen9BAnderson10BBallard9BBarren9BBath11BBell10BBoone11BBourbon10BBoyd11BBoyle10BBracken11BBreathitt10BBreckenridge9BBullitt10BButler9B

CountyZone

Caldwell9BCalloway9BCampbell11BCarlisle9BCarroll10BCarter11BCasey10BChristian9BClark10BClay10BClinton10BCrittenden9BCumberland9BDaviess9BEdmonson9BElliot11B

CountyZone

Estill10BFayette10BFleming11BFloyd10BFranklin10BFulton9BGallatin11BGarrard10BGrant11BGraves9BGrayson9BGreen9BGreenup11BHancock9BHardin9BHarlan10B

CountyZone

Harrison11BHart9BHenderson9BHenry10BHickman9BHopkins9BJackson10BJefferson10BJessamine10BJohnson11BKenton11BKnott10BKnox10BLarue9BLaurel10BLawrence11B

CountyZone

Lee10BLeslie10BLetcher10BLewis11BLincoln10BLivingston9BLogan9BLyon9BMadison10BMagoffin10BMarion10BMarshall9BMartin11BMason11B

CountyZone

Mccracken9BMccreary10BMclean9BMeade9BMenifee10BMercer10BMetcalfe9BMonroe9BMontgomery10BMorgan10BMuhlenberg9BNelson10B

CountyZone

Nicholas11BOhio9BOldham10BOwen10BOwsley10BPendleton11BPerry10BPike10BPowell10BPulaski10BRobertson11BRockcastle10BRowan11BRussell10B

CountyZone

Scott11BShelby10BSimpson9BSpencer10BTaylor9BTodd9BTrigg9BTrimble10BUnion9BWarren9BWashington10BWayne10BWebster9BWhitley10BWolfe10BWoodford10B

Zone County

9B Adair

9B Allen

10B Anderson

9B Ballard

9B Barren

11B Bath

10B Bell

11B Boone

10B Bourbon

11B Boyd

10B Boyle

11B Bracken

10B Breathitt

9B Breckenridge

10B Bullitt

9B Butler

Zone County

9B Caldwell

9B Calloway

11B Campbell

9B Carlisle

10B Carroll

11B Carter

10B Casey

9B Christian

10B Clark

10B Clay

10B Clinton

9B Crittenden

9B Cumberland

9B Daviess

9B Edmonson

11B Elliot

Zone County

10B Estill

10B Fayette

11B Fleming

10B Floyd

10B Franklin

9B Fulton

11B Gallatin

10B Garrard

11B Grant

9B Graves

9B Grayson

9B Green

11B Greenup

9B Hancock

9B Hardin

10B Harlan

Zone County

11B Harrison

9B Hart

9B Henderson

10B Henry

9B Hickman

9B Hopkins

10B Jackson

10B Jefferson

10B Jessamine

11B Johnson

11B Kenton

10B Knott

10B Knox

9B Larue

10B Laurel

11B Lawrence

Zone County

10B Lee

10B Leslie

10B Letcher

11B Lewis

10B Lincoln

9B Livingston

9B Logan

9B Lyon

10B Madison

10B Magoffin

10B Marion

9B Marshall

11B Martin

11B Mason

Zone County

9B McCracken

10B McCreary

9B McLean

9B Meade

10B Menifee

10B Mercer

9B Metcalfe

9B Monroe

10B Montgomery

10B Morgan

9B Muhlenberg

10B Nelson

Zone County

11B Nicholas

9B Ohio

10B Oldham

10B Owen

10B Owsley

11B Pendleton

10B Perry

10B Pike

10B Powell

10B Pulaski

11B Robertson

10B Rockcastle

11B Rowan

10B Russell

Zone County

11B Scott

10B Shelby

9B Simpson

10B Spencer

9B Taylor

9B Todd

9B Trigg

10B Trimble

9B Union

9B Warren

10B Washington

10B Wayne

9B Webster

10B Whitley

10B Wolfe

10B Woodford

FIGURE 902.1(18)KENTUCKY

19





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Zone Parish

4B Acadia (H)

4B Allen (H)

4B Ascension (H)

3B Assumption (H)

5A Avoyelles (H)

4B Beauregard (H)

6B Bienville (H)

6B Bossier (H)

6B Caddo (H)

4B Calcasieu (H)

6B Caldwell (H)

4B Cameron (H)

5A Catahoula (H)

6B Claiborne (H)

5A Concordia (H)

5A De Soto (H)

4B East Baton Rouge (H)

Zone Parish

6B East Carroll (H)

4B East Feliciana (H)

4B Evangeline (H)

6B Franklin (H)

5A Grant (H)

4B Iberia (H)

4B Iberville (H)

6B Jackson (H)

3B Jefferson (H)

4B Jefferson Davis (H)

5A La Salle (H)

4B Lafayette (H)

3B Lafourche (H)

6B Lincoln (H)

4B Livingston (H)

6B Madison (H)

6B Morehouse (H)

Zone Parish

5A Natchitoches (H)

3B Orleans (H)

6B Ouachita (H)

3B Plaquemines (H)

4B Pointe Coupee (H)

5A Rapides (H)

5A Red River (H)

6B Richland (H)

5A Sabine (H)

3B St Bernard (H)

3B St Charles (H)

4B St Helena (H)

3B St James (H)

3B St John The Baptist (H)

4B St Landry (H)

4B St Martin (H)

3B St Mary (H)

4B St Tammany (H)

4B Tangipahoa (H)

5A Tensas (H)

3B Terrebonne (H)

6B Union (H)

4B Vermilion (H)

5A Vernon (H)

4B Washington (H)

6B Webster (H)

4B West Baton Rouge (H)

6B West Carroll (H)

4B West Feliciana (H)

5A Winn (H)


FIGURE 902.1(19)LOUISIANAa

1K:\DATA\CODES\iecc_2003\Final VP_Boca\2003_iecc_09B.vp




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FIGURE 902.1(20)MAINE

Zone County

15 Androscoggin

17 Aroostook

15 Cumberland

16 Franklin

15 Hancock

15 Kennebec

15 Knox

15 Lincoln

16 Oxford

15 Penobscot

17 Piscataquis

15 Sagadahoc

17 Somerset

15 Waldo

15 Washington

15 York





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Zone 9B

Zone 10B

Zone 11B

Zone 12B

Zone 13A

MARYLAND

CountyZone

Allegany12BAnne Arundel9BBaltimore10BBaltimore City9BCalvert9BCaroline9BCarroll11BCecil10BCharles9BDorchester9BFrederick11BGarrett13A

CountyZone

Harford10BHoward10BKent10BMontgomery10BPrince Georges10BQueen Annes9BSomerset9BSt Marys9BTalbot9BWashington11BWicomico9BWorcester9B

Zone County

12B Allegany

9B Anne Arundel

10B Baltimore

9B Baltimore City

9B Calvert

9B Caroline

11B Carroll

10B Cecil

9B Charles

9B Dorchester

11B Frederick

13A Garrett

Zone County

10B Harford

10B Howard

10B Kent

10B Montgomery

10B Prince Georges

9B Queen Annes

9B Somerset

9B St Marys

9B Talbot

11B Washington

9B Wicomico

9B Worcester

FIGURE 902.1(21)MARYLAND





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Zone 12A

Zone 13A

Zone 14A

MASSACHUSETTS

CountyZone

Barnstable12ABerkshire14ABristol12ADukes12AEssex13AFranklin14AHampden14AHampshire14AMiddlesex13ANantucket12ANorfolk13APlymouth12ASuffolk13AWorcester14A

Zone County

12A Barnstable

14A Berkshire

12A Bristol

12A Dukes

13A Essex

14A Franklin

14A Hampden

14A Hampshire

13A Middlesex

12A Nantucket

13A Norfolk

12A Plymouth

13A Suffolk

14A Worcester

FIGURE 902.1(22)MASSACHUSETTS





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Zone 13A

Zone 14A

Zone 15

Zone 16

Zone 17

MICHIGAN

CountyZone

Alcona15Alger16Allegan14AAlpena15Antrim15Arenac15Baraga17Barry14ABay15Benzie15Berrien14ABranch14ACalhoun14ACass14ACharlevoix15Cheboygan15Chippewa16Clare15Clinton14ACrawford15Delta16Dickinson16Eaton14AEmmet15Genesee14AGladwin15Gogebic17Grand15TraverseGratiot14AHillsdale14AHoughton17Huron14AIngham14AIonia14AIosco15Iron17Isabella15Jackson14AKalamazoo14AKalkaska15Kent14A

CountyZone

Keweenaw17Lake15Lapeer14ALeelanau15Lenawee14ALivingston14ALuce16Mackinac16Macomb14AManistee15Marquette16Mason15Mecosta15Menominee16Midland15Missaukee15Monroe13AMontcalm14AMontmorency15Muskegon14ANewaygo15Oakland14AOceana15Ogemaw15Ontonagon17Osceola15Oscoda15Otsego15Ottawa14APresque Isle15Roscommon15Saginaw14ASanilac14ASchoolcraft16Shiawassee14ASt Clair14ASt Joseph14ATuscola14AVan Buren14AWashtenaw13AWayne13AWexford15

Zone County

15 Alcona

16 Alger

14A Allegan

15 Alpena

15 Antrim

15 Arenac

17 Baraga

14A Barry

15 Bay

15 Benzie

14A Berrien

14A Branch

14A Calhoun

14A Cass

15 Charlevoix

15 Cheboygan

16 Chippewa

15 Clare

14A Clinton

15 Crawford

16 Delta

16 Dickinson

14A Eaton

15 Emmet

14A Genesee

15 Gladwin

17 Gogebic

15 Grand Traverse

14A Gratiot

14A Hillsdale

17 Houghton

14A Huron

14A Ingham

14A Ionia

15 Iosco

17 Iron

15 Isabella

14A Jackson

14A Kalamazoo

15 Kalkaska

14A Kent

Zone County

17 Keweenaw

15 Lake

14A Lapeer

15 Leelanau

14A Lenawee

14A Livingston

16 Luce

16 Mackinac

14A Macomb

15 Manistee

16 Marquette

15 Mason

15 Mecosta

16 Menominee

15 Midland

15 Missaukee

13A Monroe

14A Montcalm

15 Montmorency

14A Muskegon

15 Newaygo

14A Oakland

15 Oceana

15 Ogemaw

17 Ontonagon

15 Osceola

15 Oscoda

15 Otsego

14A Ottawa

15 Presque Isle

15 Roscommon

14A Saginaw

14A Sanilac

16 Schoolcraft

14A Shiawassee

14A St Clair

14A St Joseph

14A Tuscola

14A Van Buren

13A Washtenaw

13A Wayne

15 Wexford

FIGURE 902.1(23)MICHIGAN





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Zone County

17 Aitkin

16 Anoka

17 Becker

17 Beltrami

16 Benton

16 Big Stone

15 Blue Earth

15 Brown

17 Carlton

15 Carver

17 Cass

16 Chippewa

16 Chisago

17 Clay

17 Clearwater

17 Cook

15 Cottonwood

17 Crow Wing

15 Dakota

15 Dodge

16 Douglas

15 Faribault

15 Fillmore

15 Freeborn

15 Goodhue

16 Grant

15 Hennepin

15 Houston

17 Hubbard

16 Isanti

17 Itasca

15 Jackson

16 Kanabec

16 Kandiyohi

17 Kittson

17 Koochiching

15 Lac Qui Parle

17 Lake

17 Lake Of The Woods

15 Le Sueur

15 Lincoln

15 Lyon

17 Mahnomen

Zone County

17 Marshall

15 Martin

15 McLeod

16 Meeker

16 Mille Lacs

16 Morrison

15 Mower

15 Murray

15 Nicollet

15 Nobles

17 Norman

15 Olmsted

17 Otter Tail

17 Pennington

16 Pine

15 Pipestone

17 Polk

16 Pope

15 Ramsey

17 Red Lake

15 Redwood

15 Renville

15 Rice

15 Rock

17 Roseau

15 Scott

16 Sherburne

15 Sibley

17 St Louis

16 Stearns

15 Steele

16 Stevens

16 Swift

16 Todd

16 Traverse

15 Wabasha

17 Wadena

15 Waseca

15 Washington

15 Watonwan

17 Wilkin

15 Winona

16 Wright

15 Yellow Medicine

FIGURE 902.1(24)MINNESOTA





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Zone 4B

Zone 5A

Zone 6B

Zone 7B

MISSISSIPPI

CountyZone

Adams5AAlcorn7BAmite4BAttala6BBenton7BBolivar6BCalhoun6BCarroll6BChickasaw6BChoctaw6BClaiborne5AClarke5AClay6BCoahoma7BCopiah5ACovington5ADe Soto7BForrest5AFranklin5AGeorge4BGreene5AGrenada6BHancock4BHarrison4BHinds6BHolmes6BHumphreys6BIssaquena6BItawamba7BJackson4BJasper5AJefferson5AJefferson5A

DavisJones5AKemper6BLafayette7BLamar4BLauderdale6BLawrence5ALeake6BLee7B

CountyZone

Leflore6BLincoln5ALowndes6BMadison6BMarion4BMarshall7BMonroe6BMontgomery6BNeshoba6BNewton6BNoxubee6BOktibbeha6BPanola7BPearl River4BPerry5APike4BPontotoc7BPrentiss7BQuitman7BRankin6BScott6BSharkey6BSimpson5ASmith5AStone4BSunflower6BTallahatchie7BTate7BTippah7BTishomingo7BTunica7BUnion7BWalthall4BWarren6BWashington6BWayne5AWebster6BWilkinson4BWinston6BYalobusha7BYazoo6B

Zone County

5A Adams (H)

7B Alcorn

4B Amite (H)

6B Attala (H)

7B Benton

6B Bolivar (H)

6B Calhoun (H)

6B Carroll (H)

6B Chickasaw (H)

6B Choctaw (H)

5A Claiborne (H)

5A Clarke (H)

6B Clay (H)

7B Coahoma

5A Copiah (H)

5A Covington (H)

7B De Soto

5A Forrest (H)

5A Franklin (H)

4B George (H)

5A Greene (H)

6B Grenada (H)

4B Hancock (H)

4B Harrison (H)

6B Hinds (H)

6B Holmes (H)

6B Humphreys (H)

6B Issaquena (H)

7B Itawamba

4B Jackson (H)

5A Jasper (H)

5A Jefferson (H)

5A Jefferson Davis (H)

5A Jones (H)

6B Kemper (H)

7B Lafayette

4B Lamar (H)

6B Lauderdale (H)

5A Lawrence (H)

6B Leake (H)

7B Lee

Zone County

6B Leflore (H)

5A Lincoln (H)

6B Lowndes (H)

6B Madison (H)

4B Marion (H)

7B Marshall

6B Monroe (H)

6B Montgomery (H)

6B Neshoba (H)

6B Newton (H)

6B Noxubee (H)

6B Oktibbeha (H)

7B Panola

4B Pearl River (H)

5A Perry (H)

4B Pike (H)

7B Pontotoc

7B Prentiss

7B Quitman

6B Rankin (H)

6B Scott (H)

6B Sharkey (H)

5A Simpson (H)

5A Smith (H)

4B Stone (H)

6B Sunflower (H)

7B Tallahatchie

7B Tate

7B Tippah

7B Tishomingo

7B Tunica

7B Union

4B Walthall (H)

6B Warren (H)

6B Washington (H)

5A Wayne (H)

6B Webster (H)

4B Wilkinson (H)

6B Winston (H)

7B Yalobusha

6B Yazoo (H)


FIGURE 902.1(25)MISSISSIPPIa





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Zone 9B

Zone 10B

Zone 11B

Zone 12B

Zone 13B

MISSOURI

CountyZone

Adair12BAndrew12BAtchison13BAudrain12BBarry9BBarton10B

CountyZone

Bates11BBenton11BBollinger10BBoone11BBuchanan12BButler9B

CountyZone

Caldwell12BCallaway11BCamden11BCape9B

GirardeauCarroll12B

CountyZone

Carter10BCass11BCedar11BChariton12BChristian10BClark13B

CountyZone

Clay11BClinton12BCole11BCooper11BCrawford10BDade10BDallas10BDaviess12BDe Kalb12BDent10BDouglas10BDunklin9BFranklin10BGasconade11B

CountyZone

Gentry13BGreene10BGrundy12BHarrison13BHenry11BHickory11BHolt12BHoward11BHowell9BIron10BJackson11BJasper9BJefferson10BJohnson11BKnox12BLaclede10BLafayette11BLawrence10BLewis12BLincoln11BLinn12BLivingston12BMacon12BMadison10BMaries11BMarion12B

CountyZone

Mcdonald9BMercer13BMiller11BMississippi9BMoniteau11BMonroe12BMontgomery11BMorgan11BNew Madrid9BNewton9BNodaway13BOregon9BOsage11BOzark9BPemiscot9BPerry10BPettis11BPhelps10BPike12BPlatte11BPolk10BPulaski10BPutnam13BRalls12BRandolph12BRay11B

CountyZone

Reynolds10BRipley9BSaline11BSchuyler13BScotland13BScott9BShannon10BShelby12BSt Charles10BSt Clair11BSt Francois10BSt Louis10BSt Louis City10BSte Genevieve10BStoddard9BStone9BSullivan12BTaney9BTexas10BVernon11BWarren11BWashington10BWayne10BWebster10BWorth13BWright10B

Zone County

12B Adair

12B Andrew

13B Atchison

12B Audrain

9B Barry

10B Barton

Zone County

11B Bates

11B Benton

10B Bollinger

11B Boone

12B Buchanan

9B Butler

Zone County

12B Caldwell

11B Callaway

11B Camden

9B Cape Girardeau

12B Carroll

10B Carter

Zone County

11B Cass

11B Cedar

12B Chariton

10B Christian

13B Clark

11B Clay

Zone County

12B Clinton

11B Cole

11B Cooper

10B Crawford

10B Dade

10B Dallas

12B Daviess

12B De Kalb

10B Dent

10B Douglas

9B Dunklin

10B Franklin

11B Gasconade

Zone County

13B Gentry

10B Greene

12B Grundy

13B Harrison

11B Henry

11B Hickory

12B Holt

11B Howard

9B Howell

10B Iron

11B Jackson

9B Jasper

10B Jefferson

11B Johnson

12B Knox

10B Laclede

11B Lafayette

10B Lawrence

12B Lewis

11B Lincoln

12B Linn

12B Livingston

12B Macon

10B Madison

11B Maries

12B Marion

Zone County

9B McDonald

13B Mercer

11B Miller

9B Mississippi

11B Moniteau

12B Monroe

11B Montgomery

11B Morgan

9B New Madrid

9B Newton

13B Nodaway

9B Oregon

11B Osage

9B Ozark

9B Pemiscot

10B Perry

11B Pettis

10B Phelps

12B Pike

11B Platte

10B Polk

10B Pulaski

13B Putnam

12B Ralls

12B Randolph

11B Ray

Zone County

10B Reynolds

9B Ripley

11B Saline

13B Schuyler

13B Scotland

9B Scott

10B Shannon

12B Shelby

10B St Charles

11B St Clair

10B St Francois

10B St Louis

10B St Louis City

10B Ste Genevieve

9B Stoddard

9B Stone

12B Sullivan

9B Taney

10B Texas

11B Vernon

11B Warren

10B Washington

10B Wayne

10B Webster

13B Worth

10B Wright

FIGURE 902.1(26)MISSOURI





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Zone County

15 Beaverhead

15 Big Horn

16 Blaine

15 Broadwater

15 Carbon

15 Carter

15 Cascade

15 Chouteau

Zone County

15 Custer

16 Daniels

15 Dawson

16 Deer Lodge

15 Fallon

15 Fergus

16 Flathead

15 Gallatin

Zone County

15 Garfield

16 Glacier

15 Golden Valley

16 Granite

16 Hill

15 Jefferson

15 Judith Basin

15 Lake

Zone County

15 Lewis And Clark

16 Liberty

15 Lincoln

15 Madison

15 McCone

15 Meagher

15 Mineral

Zone County

15 Missoula

15 Musselshell

15 Park

15 Petroleum

16 Phillips

16 Pondera

15 Powder River

Zone County

16 Powell

15 Prairie

15 Ravalli

15 Richland

16 Roosevelt

15 Rosebud

15 Sanders

Zone County

16 Sheridan

16 Silver Bow

15 Stillwater

15 Sweet Grass

15 Teton

16 Toole

15 Treasure

Zone County

16 Valley

15 Wheatland

15 Wibaux

15 Yellowstone

15 Yellowstone

National Park

FIGURE 902.1(27)MONTANA





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Zone County

13B Adams

14B Antelope

14B Arthur

14B Banner

14B Blaine

14B Boone

15 Box Butte

14B Boyd

14B Brown

13B Buffalo

14B Burt

13B Butler

Zone County

13B Cass

14B Cedar

13B Chase

14B Cherry

14B Cheyenne

13B Clay

13B Colfax

14B Cuming

14B Custer

14B Dakota

15 Dawes

13B Dawson

Zone County

14B Deuel

14B Dixon

13B Dodge

13B Douglas

13B Dundy

13B Fillmore

13B Franklin

13B Frontier

13B Furnas

13B Gage

14B Garden

14B Garfield

Zone County

13B Gosper

14B Grant

14B Greeley

13B Hall

13B Hamilton

13B Harlan

13B Hayes

13B Hitchcock

14B Holt

14B Hooker

14B Howard

13B Jefferson

Zone County

13B Johnson

13B Kearney

14B Keith

14B Keya Paha

14B Kimball

14B Knox

13B Lancaster

14B Lincoln

14B Logan

14B Loup

14B Madison

14B McPherson

Zone County

13B Merrick

14B Morrill

13B Nance

13B Nemaha

13B Nuckolls

13B Otoe

13B Pawnee

13B Perkins

13B Phelps

14B Pierce

13B Platte

Zone County

13B Polk

13B Red Willow

13B Richardson

14B Rock

13B Saline

13B Sarpy

13B Saunders

14B Scotts Bluff

13B Seward

15 Sheridan

14B Sherman

Zone County

15 Sioux

14B Stanton

13B Thayer

14B Thomas

14B Thurston

14B Valley

13B Washington

14B Wayne

13B Webster

14B Wheeler

13B York

FIGURE 902.1(28)NEBRASKA

10

K:\DATA\CODES\iecc_2003\Final VP_Boca\2003_iecc_09B.vp




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Zone 5B

Zone 12B

Zone 13B

Zone 15

NEVADA

CountyZone

Carson City12BChurchill12BClark5BDouglas13BElko15Esmeralda12BEureka15Humboldt13BLander13BLincoln12BLyon13BMineral12BNye12BPershing12BStorey12BWashoe12BWhite Pine15

Zone County

12B Carson City

12B Churchill

5B Clark

13B Douglas

15 Elko

12B Esmeralda

15 Eureka

13B Humboldt

13B Lander

12B Lincoln

13B Lyon

12B Mineral

12B Nye

12B Pershing

12B Storey

12B Washoe

15 White Pine

FIGURE 902.1(29)NEVADA

11





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Zone 15

Zone 16

NEW HAMPSHIRE

CountyZone

Belknap15Carroll15Cheshire15Coos16Grafton15Hillsborough15Merrimack15Rockingham15Strafford15Sullivan15

Zone County

15 Belknap

15 Carroll

15 Cheshire

16 Coos

15 Grafton

15 Hillsborough

15 Merrimack

15 Rockingham

15 Strafford

15 Sullivan

FIGURE 902.1(30)NEW HAMPSHIRE

12





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Zone 10B

Zone 11B

Zone 12B

Zone 13A

NEW JERSEY

CountyZone

Atlantic10BBergen12BBurlington11BCamden10BCape May10BCumberland10BEssex11BGloucester10BHudson11BHunterdon12BMercer11BMiddlesex11BMonmouth11BMorris12BOcean11BPassaic12BSalem10BSomerset12BSussex13AUnion11BWarren12B

Zone County

10B Atlantic

12B Bergen

11B Burlington

10B Camden

10B Cape May

10B Cumberland

11B Essex

10B Gloucester

11B Hudson

12B Hunterdon

11B Mercer

11B Middlesex

11B Monmouth

12B Morris

11B Ocean

12B Passaic

10B Salem

12B Somerset

13A Sussex

11B Union

12B Warren

FIGURE 902.1(31)NEW JERSEY

13





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Zone 7A

Zone 7B

Zone 8

Zone 9B

Zone 10B

Zone 11B

Zone 12B

Zone 13B

Zone 15

NEW MEXICO

CountyZone

Bernalillo9BCatron11BChaves7BCibola12BColfax13BCurry9BDe Baca9BDona Ana7AEddy7BGrant9BGuadalupe9BHarding11BHidalgo7ALea7BLincoln9BLos Alamos13BLuna7A

CountyZone

Mckinley13BMora15Otero7AQuay8Rio Arriba12BRoosevelt8San Juan12BSan Miguel12BSandoval13BSanta Fe13BSierra8Socorro9BTaos15Torrance11BUnion11BValencia10B

Zone County

9B Bernalillo

11B Catron

7B Chaves

12B Cibola

13B Colfax

9B Curry

9B De Baca

7A Dona Ana

7B Eddy

9B Grant

9B Guadalupe

11B Harding

7A Hidalgo

7B Lea

9B Lincoln

13B Los Alamos

7A Luna

Zone County

13B Mckinley

15 Mora

7A Otero

8 Quay

12B Rio Arriba

8 Roosevelt

12B San Juan

12B San Miguel

13B Sandoval

13B Santa Fe

8 Sierra

9B Socorro

15 Taos

11B Torrance

11B Union

10B Valencia

FIGURE 902.1(32)NEW MEXICO

14





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Zone 10B

Zone 11B

Zone 12B

Zone 13A

Zone 14A

Zone 15

Zone 16

NEW YORK

CountyZone

Albany14AAllegany15Bronx11BBroome15Cattaraugus15Cayuga14AChautauqua13AChemung15Chenango15Clinton15Columbia13ACortland15Delaware15Dutchess13AErie14AEssex16Franklin16Fulton15Genesee14AGreene14AHamilton16Herkimer15Jefferson15Kings10BLewis15Livingston14AMadison14AMonroe14AMontgomery14ANassau11BNew York10B

CountyZone

Niagara14AOneida15Onondaga14AOntario14AOrange12BOrleans14AOswego14AOtsego15Putnam12BQueens10BRensselaer14ARichmond11BRockland12BSaratoga14ASchenectady14ASchoharie15Schuyler15Seneca14ASt Lawrence15Steuben15Suffolk11BSullivan15Tioga15Tompkins15Ulster15Warren15Washington15Wayne14AWestchester12BWyoming14AYates14A

County County

Zone County

14A Albany

15 Allegany

11B Bronx

15 Broome

15 Cattaraugus

14A Cayuga

14A Chautauqua

15 Chemung

15 Chenango

15 Clinton

14A Columbia

15 Cortland

15 Delaware

13A Dutchess

14A Erie

16 Essex

16 Franklin

15 Fulton

14A Genesee

14A Greene

16 Hamilton

15 Herkimer

15 Jefferson

10B Kings

15 Lewis

14A Livingston

14A Madison

14A Monroe

14A Montgomery

11B Nassau

10B New York

Zone County

14A Niagara

15 Oneida

14A Onondaga

14A Ontario

12B Orange

14A Orleans

14A Oswego

15 Otsego

12B Putnam

10B Queens

14A Rensselaer

11B Richmond

12B Rockland

14A Saratoga

14A Schenectady

15 Schoharie

15 Schuyler

14A Seneca

15 St Lawrence

15 Steuben

11B Suffolk

15 Sullivan

15 Tioga

15 Tompkins

15 Ulster

15 Warren

15 Washington

14A Wayne

12B Westchester

14A Wyoming

14A Yates

FIGURE 902.1(33)NEW YORK

15





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NORTH CAROLINA

Zone88

11A7A11A11A6B7A6B6B9B8

7A

CountyAlamanceAlexanderAlleghanyAnsonAsheAveryBeaufortBertieBladenBrunswickBuncombeBurkeCabarrus

Zone8

7A6B888

9B7A9B7A6B6B7A

CountyCaldwellCamdenCarteretCaswellCatawbaChathamCherokeeChowanClayClevelandColumbusCravenCumberland

Zone7A6B88

6B8

7A88

7A7A9B8

CountyCurrituckDareDavidsonDavieDuplinDurhamEdgecombeForsythFranklinGastonGatesGrahamGranville

Zone7A8

7A7A9B9B7A7A6B8

9B7A6B

CountyGreeneGuilfordHalifaxHarnettHaywoodHendersonHertfordHokeHydeIredellJacksonJohnstonJones

Zone7A7A7A9B9B7A8

7A11A7A7A7A

CountyLeeLenoirLincolnMaconMadisonMartinMcdowellMecklenburgMitchellMontgomeryMooreNash

Zone6B7A6B8

6B7A6B7A8

7A7A8

CountyNew HavoverNorthamptonOnslowOrangePamlicoPasquotankPenderPerquimansPersonPittPolkRandolph

Zone7A7A8

7A7A6B7A7A9B9B9B9B

CountyRichmondRobesonRockinghamRowanRutherfordSampsonScotlandStanlyStokesSurrySwainTransylvania

Zone6B7A8

7A8

7A11A7A9B7A8

11A

CountyTyrrellUnionVanceWakeWarrenWashingtonWataugaWayneWilkesWilsonYadkinYancey

Zone 6B

Zone 7A

Zone 8

Zone 9B

Zone 11A

Zone County

8 Alamance

8 Alexander

11A Alleghany

7A Anson

11A Ashe

11A Avery

6B Beaufort (H)

7A Bertie

6B Bladen (H)

6B Brunswick (H)

9B Buncombe

8 Burke

7A Cabarrus

Zone County

8 Caldwell

7A Camden

6B Carteret (H)

8 Caswell

8 Catawba

8 Chatham

9B Cherokee

7A Chowan

9B Clay

7A Cleveland

6B Columbus (H)

6B Craven (H)

7A Cumberland

Zone County

7A Currituck

6B Dare (H)

8 Davidson

8 Davie

6B Duplin (H)

8 Durham

7A Edgecombe

8 Forsyth

8 Franklin

7A Gaston

7A Gates

9B Graham

8 Granville

Zone County

7A Greene

8 Guilford

7A Halifax

7A Harnett

9B Haywood

9B Henderson

7A Hertford

7A Hoke

6B Hyde (H)

8 Iredell

9B Jackson

7A Johnston

6B Jones (H)

Zone County

7A Lee

7A Lenoir

7A Lincoln

9B Macon

9B Madison

7A Martin

8 McDowell

7A Mecklenburg

11A Mitchell

7A Montgomery

7A Moore

7A Nash

Zone County

6B New Hanover (H)

7A Northampton

6B Onslow (H)

8 Orange

6B Pamlico (H)

7A Pasquotank

6B Pender (H)

7A Perquimans

8 Person

7A Pitt

7A Polk

8 Randolph

Zone County

7A Richmond

7A Robeson

8 Rockingham

7A Rowan

7A Rutherford

6B Sampson (H)

7A Scotland

7A Stanly

9B Stokes

9B Surry

9B Swain

9B Transylvania

Zone County

6B Tyrrell (H)

7A Union

8 Vance

7A Wake

8 Warren

7A Washington

11A Watauga

7A Wayne

9B Wilkes

7A Wilson

8 Yadkin

11A Yancey


FIGURE 902.1(34)NORTH CAROLINAa

16





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Zone 16

Zone 17

NORTH DAKOTA

CountyZone

Adams16Barnes17Benson17Billings16Bottineau17Bowman16Burke17

CountyZone

Burleigh16Cass17Cavalier17Dickey16Divide17Dunn16Eddy17

CountyZone

Emmons16Foster17Golden Valley16Grand Forks17Grant16Griggs17Hettinger16

CountyZone

Kidder17La Moure16Logan16Mchenry17Mcintosh16Mckenzie16Mclean17

CountyZone

Mercer16Morton16Mountrail17Nelson17Oliver16Pembina17Pierce17

CountyZone

Ramsey17Ransom16Renville17Richland16Rolette17Sargent16

CountyZone

Sheridan17Sioux16Slope16Stark16Steele17Stutsman17

CountyZone

Towner17Traill17Walsh17Ward17Wells17Williams17

Zone County

16 Adams

17 Barnes

17 Benson

16 Billings

17 Bottineau

16 Bowman

17 Burke

Zone County

16 Burleigh

17 Cass

17 Cavalier

16 Dickey

17 Divide

16 Dunn

17 Eddy

Zone County

16 EmmonsFoster17Golden Valley16Grand Forks17Grant16Griggs17Hettinger16

CountyZoneKidder17La Moure16Logan16McHenry17McIntosh16McKenzie16McLean17

CountyZoneMercer16Morton16Mountrail17Nelson17Oliver16Pembina17Pierce17

CountyZoneRamsey17Ransom16Renville17Richland16Rolette17Sargent16

CountyZoneSheridan17Sioux16Slope16Stark16Steele17Stutsman17

CountyZoneTowner17Traill17Walsh17Ward17Wells17Williams17

FIGURE 902.1(35)NORTH DAKOTA

17





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Zone 11B

Zone 12A

Zone 12B

Zone 13A

Zone 13B

Zone 14A

OHIO

CountyZone

Adams11BAllen13BAshland13AAshtabula13AAthens11BAuglaize13BBelmont12ABrown11BButler12BCarroll13AChampaign13AClark13AClermont11BClinton12BColumbiana13ACoshocton12BCrawford13ACuyahoga13ADarke13ADefiance14ADelaware13AErie13AFairfield12AFayette12BFranklin12BFulton14AGallia11BGeauga13AGreene12BGuernsey12BHamilton11BHancock13AHardin13AHarrison13AHenry14AHighland11BHocking12AHolmes13AHuron13AJackson11BJefferson13AKnox13ALake13ALawrence11B

CountyZone

Licking12BLogan13ALorain13ALucas14AMadison12BMahoning13AMarion13AMedina13AMeigs11BMercer13BMiami13AMonroe12AMontgomery12BMorgan12AMorrow13AMuskingum12BNoble12AOttawa13APaulding14APerry12APickaway12BPike11BPortage13APreble12BPutnam13BRichland13ARoss12BSandusky13AScioto11BSeneca13AShelby13AStark13ASummit13ATrumbull13ATuscarawas13AUnion13AVan Wert13BVinton11BWarren12BWashington11BWayne13AWilliams14AWood14AWyandot13A

CountyZoneAdams11BAllen13BAshland13AAshtabula13AAthens11BAuglaize13BBelmont12ABrown11BButler12BCarroll13AChampaign13AClark13AClermont11BClinton12BColumbiana13ACoshocton12BCrawford13ACuyahoga13ADarke13ADefiance14ADelaware13AErie13AFairfield12AFayette12BFranklin12BFulton14AGallia11BGeauga13AGreene12BGuernsey12BHamilton11BHancock13AHardin13AHarrison13AHenry14AHighland11BHocking12AHolmes13AHuron13AJackson11BJefferson13AKnox13ALake13ALawrence11B

CountyZoneLicking12BLogan13ALorain13ALucas14AMadison12BMahoning13AMarion13AMedina13AMeigs11BMercer13BMiami13AMonroe12AMontgomery12BMorgan12AMorrow13AMuskingum12BNoble12AOttawa13APaulding14APerry12APickaway12BPike11BPortage13APreble12BPutnam13BRichland13ARoss12BSandusky13AScioto11BSeneca13AShelby13AStark13ASummit13ATrumbull13ATuscarawas13AUnion13AVan Wert13BVinton11BWarren12BWashington11BWayne13AWilliams14AWood14AWyandot13A

FIGURE 902.1(36)OHIO

18





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OKLAHOMA

Zone Zone Zone Zone Zone Zone Zone ZoneCounty County County County County County County County

89B7B

10B88

7B88

6B

86B

10B7B7B7B7B9B88

89B9B8

7B7B9B7B7B9B

7B7B7B6B6B9B8

7B7B7B

7B8

6B9B6B8

7B7B7B7B

7B8

9B7B888

9B8

87B7B7B6B9B9B7B7B

7B10B7B88

9B8

9B9B

AdairAlfalfaAtokaBeaverBeckhamBlaineBryanCaddoCanadianCarter

CherokeeChoctawCimarronCleavlandCoalComancheCottonCraigCreekCuster

DelawareDeweyEllisGarfieldGarvinGradyGrantGreerHarmonHarper

HaskellHughesJacksonJeffersonJohnstonKayKingfisherKiowaLatimerLe Flore

LincolnLoganLoveMajorMarshallMayesMcclainMccurtainMcintoshMurry

MuskogeeNobleNowataOkfuskeeOklahomaOkmulgeeOsageOttawaPawnee

PaynePittsburgPontotocPottawatomiePushmatahaRoger MillsRogersSeminoleSequoyah

StephensTexasTillmanTulsaWagonerWashingtonWashitaWoodsWoodward

Zone 6B

Zone 7B

Zone 8

Zone 9B

Zone 10B

Zone County

8 Adair

9B Alfalfa

7B Atoka

10B Beaver

8 Beckham

8 Blaine

7B Bryan

8 Caddo

8 Canadian

6B Carter (H)

Zone County

8 Cherokee

6B Choctaw (H)

10B Cimarron

7B Cleveland

7B Coal

7B Comanche

7B Cotton

9B Craig

8 Creek

8 Custer

Zone County

8 Delaware

9B Dewey

9B Ellis

8 Garfield

7B Garvin

7B Grady

9B Grant

7B Greer

7B Harmon

9B Harper

Zone County

7B Haskell

7B Hughes

7B Jackson

6B Jefferson (H)

6B Johnston (H)

9B Kay

8 Kingfisher

7B Kiowa

7B Latimer

7B Le Flore

Zone County

7B Lincoln

8 Logan

6B Love (H)

9B Major

6B Marshall (H)

8 Mayes

7B McClain

7B McCurtain

7B McIntosh

7B Murray

Zone County

7B Muskogee

8 Noble

9B Nowata

7B Okfuskee

8 Oklahoma

8 Okmulgee

8 Osage

9B Ottawa

8 Pawnee

Zone County

8 Payne

7B Pittsburg

7B Pontotoc

7B Pottawatomie

6B Pushmataha (H)

9B Roger Mills

9B Rogers

7B Seminole

7B Sequoyah

Zone County

7B Stephens

10B Texas

7B Tillman

8 Tulsa

8 Wagoner

9B Washington

8 Washita

9B Woods

9B Woodward


FIGURE 902.1(37)OKLAHOMAa

1K:\DATA\CODES\iecc_2003\Final VP_Boca\2003_iecc_09C.vp

Thursday, January 16, 2003 11:55:21 AM



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Zone 9A

Zone 10A

Zone 11A

Zone 12A

Zone 12B

Zone 13B

Zone 14A

Zone 15

OREGON

CountyZone

Baker15Benton10AClackamas10AClatsop11AColumbia11ACoos9ACrook14ACurry9ADeschutes14ADouglas9AGilliam12AGrant15Harney15Hood River12AJackson11AJefferson13BJosephine9AKlamath14ALake15Lane10ALincoln11ALinn10AMalheur12BMarion10AMorrow12AMultnomah10APolk10ASherman13BTillamook11AUmatilla12AUnion13BWallowa15Wasco13BWashington10AWheeler13BYamhill10A

CountyZone

Baker15

Benton10A

Clackamas10A

Clatsop11A

Columbia11A

Coos9A

Crook14A

Curry9A

Deschutes14A

Douglas9A

Gilliam12A

Grant15

Harney15

Hood River12A

Jackson11A

Jefferson13B

Josephine9A

Klamath14A

Lake15

Lane10A

Lincoln11A

Linn10A

Malheur12B

Marion10A

Morrow12A

Multnomah10A

Polk10A

Sherman13B

Tillamook11A

Umatilla12A

Union13B

Wallowa15

Wasco13B

Washington10A

Wheeler13B

Yamhill10A

FIGURE 902.1(38)OREGON





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Zone 10B

Zone 11B

Zone 12A

Zone 12B

Zone 13B

Zone 14A

Zone 15

PENNSYLVANIA

CountyZone

Adams11BAllegheny12AArmstrong13BBeaver12ABedford13BBerks12B

CountyZone

Blair13BBradford15Bucks11BButler14ACambria13BCameron15

CountyZone

Carbon13BCentre13BChester11BClarion14AClearfield15Clinton13B

CountyZone

Columbia13BCrawford14ACumberland12BDauphin12BDelaware10BElk15

CountyZone

Erie14AFayette12AForest15Franklin11BFulton12BGreene12A

CountyZone

Huntingdon12BIndiana13BJefferson15Juniata12BLackawanna14ALancaster11B

CountyZone

Lawrence14ALebanon12BLehigh12BLuzerne13BLycoming13BMckean15

CountyZone

Mercer14AMifflin12BMonroe13BMontgomery11BMontour13BNorthampton12BNorthumber-13B

landPerry12BPhiladelphia10BPike13BPotter15Schuylkill13BSnyder13BSomerset13BSullivan14ASusquehanna15Tioga15Union13BVenango14AWarren14AWashington12AWayne15Westmoreland13BWyoming14AYork11B

CountyZone

Adams11B

Allegheny12A

Armstrong13B

Beaver12A

Bedford13B

Berks12B

CountyZone

Blair13B

Bradford15

Bucks11B

Butler14A

Cambria13B

Cameron15

CountyZone

Carbon13B

Centre13B

Chester11B

Clarion14A

Clearfield15

Clinton13B

CountyZone

Columbia13B

Crawford14A

Cumberland12B

Dauphin12B

Delaware10B

Elk15

CountyZone

Erie14A

Fayette12A

Forest15

Franklin11B

Fulton12B

Greene12A

CountyZone

Huntingdon12B

Indiana13B

Jefferson15

Juniata12B

Lackawanna14A

Lancaster11B

CountyZone

Lawrence14A

Lebanon12B

Lehigh12B

Luzerne13B

Lycoming13B

McKean15

CountyZone

Mercer14A

Mifflin12B

Monroe13B

Montgomery11B

Montour13B

Northampton12B

Northumberland13B

Perry12B

Philadelphia10B

Pike13B

Potter15

Schuylkill13B

Snyder13B

Somerset13B

Sullivan14A

Susquehanna15

Tioga15

Union13B

Venango14A

Warren14A

Washington12A

Wayne15

Westmoreland13B

Wyoming14A

York11B

FIGURE 902.1(39)PENNSYLVANIA





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Zone 12A

Zone 14A

RHODE ISLAND

CountyZone

Bristol12AKent12ANewport12AProvidence14AWashington12A

CountyZone

Bristol12A

Kent12A

Newport12A

Providence14A

Washington12A

FIGURE 902.1(40)RHODE ISLAND





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Zone 5A

Zone 6B

Zone 7A

SOUTH CAROLINA

CountyZone

Abbeville7AAiken6BAllendale5AAnderson7ABamberg5ABarnwell5ABeaufort5ABerkeley5ACalhoun6BCharleston5ACherokee7AChester7AChesterfield7AClarendon6BColleton5ADarlington6BDillon6BDorchester5AEdgefield6BFairfield7AFlorence6BGeorgetown5AGreenville7A

CountyZone

Greenwood7AHampton5AHorry5AJasper5AKershaw7ALancaster7ALaurens7ALee6BLexington6BMarion6BMarlboro6BMccormick6BNewberry6BOconee7AOrangeburg6BPickens7ARichland6BSaluda6BSpartanburg7ASumter6BUnion7AWilliamsburg6BYork7A

Zone County

7A Abbeville

6B Aiken (H)

5A Allendale (H)

7A Anderson

5A Bamberg (H)

5A Barnwell (H)

5A Beaufort (H)

5A Berkeley (H)

6B Calhoun (H)

5A Charleston (H)

7A Cherokee

7A Chester

7A Chesterfield

6B Clarendon (H)

5A Colleton (H)

6B Darlington (H)

6B Dillon (H)

5A Dorchester (H)

6B Edgefield (H)

7A Fairfield

6B Florence (H)

5A Georgetown (H)

7A Greenville

Zone County

7A Greenwood

5A Hampton (H)

5A Horry (H)

5A Jasper (H)

7A Kershaw

7A Lancaster

7A Laurens

6B Lee (H)

6B Lexington (H)

6B Marion (H)

6B Marlboro (H)

6B McCormick (H)

6B Newberry (H)

7A Oconee

6B Orangeburg (H)

7A Pickens

6B Richland (H)

6B Saluda (H)

7A Spartanburg

6B Sumter (H)

7A Union

6B Williamsburg (H)

7A York


FIGURE 902.1(41)SOUTH CAROLINAa





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®187

Zone 14B

Zone 15

Zone 16

SOUTH DAKOTA

CountyZone

Aurora15Beadle15Bennett14BBon Homme14BBrookings16Brown16

CountyZone

Brule15Buffalo15Butte15Campbell15Charles Mix14BClark16

CountyZone

Clay14BCodington16Corson15Custer15Davison15Day16

CountyZone

Deuel16Dewey15Douglas14BEdmunds15Fall River15Faulk15

CountyZone

Grant16Gregory14BHaakon15Hamlin16Hand15Hanson15

CountyZone

Harding15Hughes15Hutchinson14BHyde15Jackson14BJerauld15

CountyZone

Jones15Kingsbury15Lake15Lawrence15Lincoln15Lyman15

CountyZone

Marshall16Mccook15Mcpherson16Meade15Mellette14BMiner15Minnehaha15Moody15Pennington15Perkins15Potter15Roberts16Sanborn15Shannon15Spink15Stanley15Sully15Todd14BTripp14BTurner15Union14BWalworth15Yankton14BZiebach15

CountyZone

Aurora15

Beadle15

Bennett14B

Bon Homme14B

Brookings16

Brown16

CountyZone

Brule15

Buffalo15

Butte15

Campbell15

Charles Mix14B

Clark16

CountyZone

Clay14B

Codington16

Corson15

Custer15

Davison15

Day16

CountyZone

Deuel16

Dewey15

Douglas14B

Edmunds15

Fall River15

Faulk15

CountyZone

Grant16

Gregory14B

Haakon15

Hamlin16

Hand15

Hanson15

CountyZone

Harding15

Hughes15

Hutchinson14B

Hyde15

Jackson14B

Jerauld15

CountyZone

Jones15

Kingsbury15

Lake15

Lawrence15

Lincoln15

Lyman15

CountyZone

Marshall16

McCook15

McPherson16

Meade15

Mellette14B

Miner15

Minnehaha15

Moody15

Pennington15

Perkins15

Potter15

Roberts16

Sanborn15

Shannon15

Spink15

Stanley15

Sully15

Todd14B

Tripp14B

Turner15

Union14B

Walworth15

Yankton14B

Ziebach15

FIGURE 902.1(42)SOUTH DAKOTA





CL

IMA

TE

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PS

1882003 IN

TE

RN

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AL

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CO

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VA

TIO

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E®

TENNESSEE


9B8

9B888

10B9B9B

10B9B

8

10B9B9B

88

9B8

9B8

9B8

7B

10B8

9B8

9B9B9B9B

810B

88

9B88

9B9B9B9B9B9B

10B8

9B

88888

9B888

9B88

88

9B8

10B9B9B

810B

89B

8

9B9B

810B

89B7B9B9B9B9B

8

9B10B9B9B9B9B8

9B9B8

9B

AndersonBedfordBentonBledsoeblountBradleyCampbellCannonCarrollCarterCheathamChester

ClaiborneClayCockeCoffeeCrockettCumberlandDavidsonDe KalbDecaturDicksonDyerFayette

FentressFranklinGibsonGilesGraingerGreeneGrundyHamblenHamiltonHancockHardemanHardin

HawkinsHaywoodHendersonHenryHickmanHoustonHumphreysJacksonJeffersonJohnsonKnoxLake

LauderdaleLawrenceLewisLincolnLoudonMaconMadisonMarionMarshallMauryMcminnMcnairy

MeigsMonroeMontgomeryMooreMorganObionOvertonPerryPickettPolkPutnamRhea

RoaneBobertsonRutherfordScottSequatchieSevierShelbySmithStewartSullivanSumnerTipton

TrousdaleUnicotUnionVan BurenWarrenWashingtonWayneWeakleyWhiteWilliamsonWilson

Zone 7B

Zone 8

Zone 9B

Zone 10B

Zone County

9B Anderson

8 Bedford

9B Benton

8 Bledsoe

8 Blount

8 Bradley

10B Campbell

9B Cannon

9B Carroll

10B Carter

9B Cheatham

8 Chester

Zone County

10B Claiborne

9B Clay

9B Cocke

8 Coffee

8 Crockett

9B Cumberland

8 Davidson

9B De Kalb

8 Decatur

9B Dickson

8 Dyer

7B Fayette (H)

Zone County

10B Fentress

8 Franklin

9B Gibson

8 Giles

9B Grainger

9B Greene

9B Grundy

9B Hamblen

8 Hamilton

10B Hancock

8 Hardeman

8 Hardin

Zone County

9B Hawkins

8 Haywood

8 Henderson

9B Henry

9B Hickman

9B Houston

9B Humphreys

9B Jackson

9B Jefferson

10B Johnson

8 Knox

9B Lake

Zone County

8 Lauderdale

8 Lawrence

8 Lewis

8 Lincoln

8 Loudon

9B Macon

8 Madison

8 Marion

8 Marshall

9B Maury

8 McMinn

8 McNairy

Zone County

8 Meigs

8 Monroe

9B Montgomery

8 Moore

10B Morgan

9B Obion

9B Overton

8 Perry

10B Pickett

8 Polk

9B Putnam

8 Rhea

Zone County

9B Roane

9B Robertson

8 Rutherford

10B Scott

8 Sequatchie

9B Sevier

7B Shelby (H)

9B Smith

9B Stewart

9B Sullivan

9B Sumner

8 Tipton

Zone County

9B Trousdale

10B Unicoi

9B Union

9B Van Buren

9B Warren

9B Washington

8 Wayne

9B Weakley

9B White

8 Williamson

9B Wilson


FIGURE 902.1(43)TENNESSEEa





CL

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2003 INT

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RV

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®189

Zone 2B

Zone 3B

Zone 3C

Zone 4B

Zone 5A

Zone 5B

Zone 6B

Zone 7B

Zone 8

Zone 9B

TEXASCountyZone

Anderson5AAndrews6BAngelina5AAransas3BArcher7B

Armstrong9BAtascosa3C

Austin4BBailey9B

Bandera5ABastrop4BBaylor7BBee3BBell5B

Bexar4BBlanco5ABorden7BBosque5BBowie6B

Brazoria3BBrazos4B

Brewster5ABriscoe8Brooks2BBrown5B

Burleson4BBurnet5A

Caldwell4BCalhoun3B

CountyZone

Callahan6BCameron2B

Camp6BCarson9BCass6B

Castro9BChambers4BCherokee5AChildress7B

Clay7BCochran8

Coke6BColeman5B

Collin6B

CountyZone

Collingsworth7BColorado4B

Comal4BComanche5B

Concho5BCooke6BCoryell5BCottle7BCrane5B

Crockett5BCrosby7B

Culberson6BDallam9BDallas5B

CountyZone

Dawson7BDe Witt3C

Deaf Smith9BDelta6B

Denton6BDickens7BDimmit3CDonley8Duval3C

Eastland6BEctor6B

Edwards5AEl Paso6B

Ellis5BErath6BFalls5B

Fannin6BFayette4BFisher6BFloyd8Foard7B

Fort Bend4B

CountyZone

Franklin6BFreestone5B

Frio3CGaines7B

Galveston3BGarza7B

Gillespie5AGlasscock6B

Goliad3BGonzales4B

Gray9BGrayson6BGregg6BGrimes4B

Guadalupe4BHale8Hall8

Hamilton5BHansford9B

Hardeman7BHardin4BHarris4B

CountyZone

Harrison6BHartley9BHaskell6BHays5B

Hemphill9BHenderson5B

Hidalgo2BHill5B

Hockley8Hood5B

Hopkins6BHouston5AHoward6B

Hudspeth6BHunt6B

Hutchinson9BIrion5BJack6B

Jackson3BJasper5A

Jeff Davis6BJefferson4BJim Hogg2BJim Wells3CJohnson5BJones6BKarnes3C

Kaufman6BKendall5AKenedy2B

Kent7BKerr5A

Kimble5AKing7B

Kinney4BKleberg2B

Knox7BLa Salle3CLamar6BLamb8

Lampasas5BLavaca4B

Lee4BLeon5B

Liberty4BLimestone5BLipscomb9BLive Oak3C

Llano5BLoving6B

Lubbock7B

CountyZone

Lynn7BMadison4BMarion6BMartin6BMason5B

Matagorda3BMaverick3CMcculloch5BMclennan5BMcmullen3CMedina4BMenard5BMidland6BMilam4BMills5B

Mitchell6BMontague6B

Montgomery4BMoore9BMorris6BMotley7B

Nacogdoches5ANavarro5BNewton5ANolan6B

Nueces3BOchiltree9BOldham9BOrange4B

Palo Pinto6BPanola5AParker6BParmer9BPecos5APolk5A

Potter9BPresidio5ARains6B

Randall9BReagan5B

Real5ARed River6BReeves6BRefugio3BRoberts9B

Robertson4BRockwall6BRunnels5B

Rusk5BSabine5A

San Augustine5A

CountyZone

San Jacinto4BSan Patricio3BSan Saba5BSchleicher5B

Scurry7BShackelford6B

Shelby5ASherman9B

Smith5BSomervell5B

Starr2BStephens6BSterling6B

Stonewall7BSutton5A

Swisher8Tarrant5BTaylor6BTerrell5ATerry7B

Throckmorton6BTitus6B

Tom Green5BTravis5BTrinity5ATyler5A

Upshur6BUpton5BUvalde4B

Val Verde4BVan Zandt6B

Victoria3BWalker4BWaller4BWard6B

Washington4BWebb3C

Wharton3BWheeler9BWichita7B

Wilbarger7BWillacy2B

Williamson5BWilson4BWinkler6BWise6BWood6B

Yoakum8Young6BZapata2BZavala3C


5A6B5A3B7B9B3C4B9B5A4B7B3B5B4B5A7B5B6B3B4B5A

82B5B4B5A4B3B

AndersonAndrewsAngelinaAransasArcherArmstrongAtascosaAustinBaileyBanderaBastropBaylorBeeBellBexarBlancoBordenBosqueBowieBrazoriaBrazosBrewsterBriscoeBrooksbrownBurlesonBurnetCaldwellCalhoun

6B2B6B9B6B9B4B5A7B7B

86B5B6B

CallahanCameronCampCarsonCassCastroChambersCherokeeChildressClayCochranCokeColemanCollin

7B4B4B5B5B6B5B7B5B5B7B6B9B5B

CollingsworthColoradoComalComancheConchoCookeCoryellCottleCraneCrockettCrosbyCulbersonDallamDallas

7B3C9B6B6B7B3C

83C6B6B5A6B5B6B5B6B4B6B

87B4B

DawsonDe WittDeaf SmithDeltaDentonDickensDimmitDonleyDuvalEastlandEctorEdwardsEl PasoEllisErathFallsFanninFayetteFisherFloydFoardFort Bend

6B5B3C7B3B7B5A6B3B4B9B6B6B4B4B

88

5B9B7B4B4B

FranklinFreestoneFrioGainesGalvestonGarzaGillespieGlasscockGoliadGonzalesGrayGraysonGreggGrimesGuadalupeHaleHallHamiltonHansfordHardemanHardinHarris

6B9B6B5B9B5B2B5B

85B6B5A6B6B6B9B5B6B3B5A6B4B2B3C5B6B3C6B5A2B7B5A5A7B4B2B7B3C6B

85B4B4B5B4B5B9B3C5B6B7B

HarrisonHartleyhaskellHaysHemphillHendersonHidalgoHillHockleyHoodHopkinsHoustonHowardHudspethHuntHutchinsonIrionJackJacksonJasperJeff DavisJeffersonJim HoggJim WellsJohnsonJonesLarnesKaufmanKendallKenedyKentKerrKimbleKingKinneyKlebergKnoxLa SalleLamarLambLampasasLavacaLeeLeonLibertyLimestoneLipscombLive OakLlanoLovingLubbock

7B4B6B6B5B3B3C5B5B3C4B5B6B4B5B6B6B4B9B6B7B5A5B5A6B3B9B9B4B6B5A6B9B5A5A9B5A6B9B5B5A6B6B3B9B4B6B5B5B5A5A

LynnMadisonMarionMartinMasonMatagordaMaverickMccullochMclennanMcmullenMedinaMenardMidlandMilamMillsMitchellMontagueMontgomeryMooreMorrisMotleyNacogdochesNavarroNewtonNolanNuecesOchiltreeOldhamOrangePalo PintoPanolaParkerParmerPecosPolkPotterPresidioRainsRandallReaganRealRed RiverReevesRefugioRobertsRobertsonRockwallRunnelsRuskSabineSan Augustine

4B3B5B5B7B6B5A9B5B5B2B6B6B7B5A

85B6B5A7B6B6B5B5B5A5A6B5B4B4B6B3B4B4B6B4B3C3B9B7B7B2B5B4B6B6B6B

86B2B3C

San JacintoSan PatricioSan SabaSchleicherScurryShackelfordShelbyShermanSmithSomervellStarrStephensjSterlingStonewallSuttonSwisherTarrantTaylorTerrellTerryThrockmortonTitusTom GreenTravisTrinityTylerUpshurUptonUvaldeVal VerdeVan ZandtVictoriaWalkerWallerWardWashingtonWebbWhartonWheelerWichitaWilbargerWillacyWilliamsonWilsonWinklerWiseWoodYoakumYoungZapataZavala

TEXAS

Zone 2B

Zone 3BZone 3C

Zone 4BZone 5A

Zone 5BZone 6BZone 7B

Zone 8Zone 9B

Zone County

5A Anderson (H)

6B Andrews

5A Angelina (H)

3B Aransas (H)

7B Archer

9B Armstrong

3C Atascosa (H)

4B Austin (H)

9B Bailey

5A Bandera (H)

4B Bastrop (H)

7B Baylor

3B Bee (H)

5B Bell (H)

4B Bexar (H)

5A Blanco (H)

7B Borden

5B Bosque (H)

6B Bowie

3B Brazoria (H)

4B Brazos (H)

5A Brewster (H)

8 Briscoe

2B Brooks (H)

5B Brown (H)

4B Burleson (H)

5A Burnet (H)

4B Caldwell (H)

3B Calhoun (H)

Zone County

6B Callahan

2B Cameron (H)

6B Camp

9B Carson

6B Cass

9B Castro

4B Chambers (H)

5A Cherokee (H)

7B Childress

7B Clay

8 Cochran

6B Coke

5B Coleman (H)

6B Collin

7B Collingsworth

4B Colorado (H)

Zone County

4B Comal (H)

5B Comanche (H)

5B Concho (H)

6B Cooke

5B Coryell (H)

7B Cottle

5B Crane (H)

5B Crockett (H)

7B Crosby

6B Culberson

9B Dallam

5B Dallas (H)

7B Dawson

3C De Witt (H)

9B Deaf Smith

6B Delta

Zone County

6B Denton

7B Dickens

3C Dimmit (H)

8 Donley

3C Duval (H)

6B Eastland

6B Ector

5A Edwards (H)

6B El Paso

5B Ellis (H)

6B Erath

5B Falls (H)

6B Fannin

4B Fayette (H)

6B Fisher

8 Floyd

7B Foard

4B Fort Bend (H)

6B Franklin

5B Freestone (H)

3C Frio (H)

Zone County

7B Gaines

3B Galveston (H)

7B Garza

5A Gillespie (H)

6B Glasscock

3B Goliad (H)

4B Gonzales (H)

9B Gray

6B Grayson

6B Gregg

4B Grimes (H)

4B Guadalupe (H)

8 Hale

8 Hall

5B Hamilton (H)

9B Hansford

7B Hardeman

4B Hardin (H)

4B Harris (H)

6B Harrison

9B Hartley

6B Haskell

5B Hays (H)

9B Hemphill

Zone County

5B Henderson (H)

2B Hidalgo (H)

5B Hill (H)

8 Hockley

5B Hood (H)

6B Hopkins

5A Houston (H)

6B Howard

6B Hudspeth

6B Hunt

9B Hutchinson

5B Irion (H)

6B Jack

3B Jackson (H)

5A Jasper (H)

6B Jeff Davis

4B Jefferson (H)

2B Jim Hogg (H)

3C Jim Wells (H)

5B Johnson (H)

6B Jones

3C Karnes (H)

6B Kaufman

5A Kendall (H)

2B Kenedy (H)

7B Kent

5A Kerr (H)

5A Kimble (H)

7B King

4B Kinney (H)

2B Kleberg (H)

7B Knox

3C La Salle (H)

6B Lamar

8 Lamb

5B Lampasas (H)

4B Lavaca (H)

4B Lee (H)

5B Leon (H)

4B Liberty (H)

5B Limestone (H)

9B Lipscomb

3C Live Oak (H)

5B Llano (H)

6B Loving

7B Lubbock

7B Lynn

4B Madison (H)

6B Marion

6B Martin

Zone County

5B Mason (H)

3B Matagorda (H)

3C Maverick (H)

5B McCulloch (H)

5B McLennan (H)

3C McMullen (H)

4B Medina (H)

5B Menard (H)

6B Midland (H)

4B Milam (H)

5B Mills (H)

6B Mitchell

6B Montague

4B Montgomery (H)

9B Moore

6B Morris

7B Motley

5A Nacogdoches (H)

5B Navarro (H)

5A Newton (H)

6B Nolan

3B Nueces (H)

9B Ochiltree

9B Oldham

4B Orange (H)

6B Palo Pinto

5A Panola (H)

6B Parker

9B Parmer

5A Pecos (H)

5A Polk (H)

9B Potter

5A Presidio (H)

6B Rains

9B Randall

5B Reagan (H)

5A Real (H)

6B Red River

6B Reeves

3B Refugio (H)

9B Roberts

4B Robertson (H)

6B Rockwall

5B Runnels (H)

5B Rusk (H)

5A Sabine (H)

5A San Augustine (H)

4B San Jacinto (H)

3C San Patricio (H)

Zone County

5B San Saba (H)

5B Schleicher (H)

7B Scurry

6B Shackelford

5A Shelby (H)

9B Sherman

5B Smith (H)

5B Somervell (H)

2B Starr (H)

6B Stephens

6B Sterling

7B Stonewall

5A Sutton (H)

8 Swisher

5B Tarrant (H)

6B Taylor

5A Terrell (H)

7B Terry

6B Throckmorton

6B Titus

5B Tom Green (H)

5B Travis (H)

5A Trinity (H)

5A Tyler (H)

6B Upshur

5B Upton (H)

4B Uvalde (H)

4B Val Verde (H)

6B Van Zandt

3B Victoria (H)

4B Walker (H)

4B Waller (H)

6B Ward

4B Washington (H)

3C Webb (H)

3B Wharton (H)

9B Wheeler

7B Wichita

7B Wilbarger

2B Willacy (H)

5B Williamson (H)

4B Wilson (H)

6B Winkler

6B Wise

6B Wood

8 Yoakum

6B Young

2B Zapata (H)

3C Zavala (H)

a. Counties identified with (H) shall be considered “hot and humid climate areas”for purposes of the application of Section 502.1.1.

FIGURE 902.1(44)TEXASa





CL

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1902003 IN

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Zone 10B

Zone 12B

Zone 13B

Zone 14B

Zone 15

UTAH

CountyZone

Beaver14BBox Elder12BCache15Carbon14BDaggett15Davis12BDuchesne15Emery14BGarfield14BGrand10BIron12BJuab12BKane10BMillard13BMorgan15Piute13BRich15Salt Lake12BSan Juan13BSanpete14BSevier13BSummit15Tooele12BUintah15Utah12BWasatch15Washington10BWayne14BWeber12B

CountyZone

Beaver14B

Box Elder12B

Cache15

Carbon14B

Daggett15

Davis12B

Duchesne15

Emery14B

Garfield14B

Grand10B

Iron12B

Juab12B

Kane10B

Millard13B

Morgan15

Piute13B

Rich15

Salt Lake12B

San Juan13B

Sanpete14B

Sevier13B

Summit15

Tooele12B

Uintah15

Utah12B

Wasatch15

Washington10B

Wayne14B

Weber12B

FIGURE 902.1(45)UTAH





CL

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Zone 15

Zone 16

VERMONT

CountyZone

Addison15Bennington15Caledonia16Chittenden15Essex16Franklin15Grand Isle15Lamoille16Orange16Orleans16Rutland15Washington16Windham15Windsor15

CountyZone

Addison15

Bennington15

Caledonia16

Chittenden15

Essex16

Franklin15

Grand Isle15

Lamoille16

Orange16

Orleans16

Rutland15

Washington16

Windham15

Windsor15

FIGURE 902.1(46)VERMONT

10

K:\DATA\CODES\iecc_2003\Final VP_Boca\2003_iecc_09C.vp




CL

IMA

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MA

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1922003 IN

TE

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AL

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Zone 8

Zone 9B

Zone 10B

Zone 11B

VIRGINIA

CountyZone

Accomack8Albemarle9BAlleghany10B

Amelia9BAmherst9B

Appomattox9BArlington10BAugusta11B

Bath11BBedford9BBland11B

Botetourt9BBrunswick8Buchanan10B

Buckingham9B

CountyZone

Campbell9BCaroline9BCarroll11B

Charles City8Charlotte9B

Chesterfield8Clarke11BCraig10B

Culpeper10BCumberland9BDickenson10BDinwiddie8

Essex9BFairfax10B

Fauquier10B

CountyZone

Floyd11BFluvanna9BFranklin10B

Frederick11BGiles10B

Gloucester8Goochland9BGrayson11BGreene10B

Greensville8Halifax9B

Hanover9BHenrico8Henry10B

Highland11B

CountyZone

Isle Of Wight8James City8King And9B

QueenKing George9BKing William9BLancaster8

Lee10BLoudoun10BLouisa9B

Lunenburg9BMadison11BMathews8

Mecklenburg9BMiddlesex8

CountyZone

Montgomery11BNansemond8

Nelson9BNew Kent8

Northampton8Northumber-8

landNottoway9B

CountyZone

Orange10BPage11B

Patrick10BPittsylvania9BPowhatan9B

Prince Edward9BPrince George8

CountyZone

Prince William10BPulaski11B

Rappahannock11BRichmond8Roanoke9B

Rockbridge9BRockingham11B

Russell10B

CountyZone

Scott10BShenandoah11B

Smyth11BSouthampton8Spotsylvania10B

Stafford10BSurry8

Sussex8Tazewell11BWarren11B

Washington11BWestmoreland8

Wise10BWythe11BYork8

Independent Cities

CityZone

Alexandria10BBedford9BBristol11B

Buena Vista9BCharlottesville9BChesapeake8

CityZone

Clifton Forge10BColonial Heights8

Covington10BDanville9BEmporia8

CityZone

Fairfax10BFalls Church10B

Franklin8Fredericksburg10B

Galax11B

CityZone

Hampton8Harrisonburg11B

Hopewell8Lexington9BLynchburg9B

CityZone

Manassas10BManassas Park10B

Martinsville10BNewport News8

Norfolk8

CityZone

Norton10BPetersburg8Poquoson8

Portsmouth8Radford11B

CityZone

Richmond8Roanoke9B

Salem9BSouth Boston9B

Staunton11B

CityZone

Suffolk8Virginia Beach8Waynesboro11BWilliamsburg8Winchester11B


89B

10B9B9B9B

10B11B11B9B

11B9B

810B

9B

9B9B

11B8

9B8

11B10B10B

9B10B

89B

10B10B

11B9B

10B11B10B

89B

11B10B

89B9B

810B11B

88

9B

9B9B

810B10B

9B9B

11B8

9B8

11B8

9B888

9B

10B11B10B

9B9B9B

8

10B11B11B

89B9B

11B10B

10B11B11B

810B10B

88

11B11B11B

810B11B

8

AccomackAlbemarieAlleghanyAmeliaAmherstAppomattoxArlingtonAugustaBathBedfordBlandBotetourtBrunswickBuchananBuckingham

CampbellCarolineCarrollCharles CityCharlotteChesterfieldClarkeGraigCulpeperCumberlandDickensonDinwiddieEssexFairfaxFauquier

FloydFluvannaFranklinFrederickGilesGloucesterGoochlandGraysonGreeneGreensvilleHalifaxHanoverHenricoHenryHighland

Isle Of WightJames CityKing And

QueenKing GeorgeKing WilliamLancasterLeeLoudounLouisaLunenburgMadisonMathewsMecklenburgMiddlesex

MontgomeryNansemondNelsonNew KentNorthamptonNorthumber-

landNottoway

OrangePagePatrickPittsylvaniaPowhatanPrince EdwardPrince George

Prince WilliamPulaskiRappahannockRichmondRoanokeRockbridgeRockinghamRussell

ScottShenandoahSmythSouthamptonSpotsylvaniaStaffordSurrySussexTazewellWarrenWashingtonWestmorelandWiseWytheYork

VIRGINIA

Zone 8

Zone 9B

Zone 10B

Zone 11B

Zone Zone Zone Zone

Zone Zone Zone Zone

City

City City City City10B9B

11B9B9B

8

AlexandriabedfordBristolBuena VistaCharlottesvilleChesapeake

10B8

10B9B

8

Clifton ForgeColonial HeightsCovingtonDanvilleEmporia

10B10B

810B11B

FairfaxFalls ChurchFranklinFredericksburgGalax

811B

89B9B

HamptonHarrisonburgHopewellLexingtonLynchburg

10B10B10B

88

ManassasManassas ParkMartinsvilleNewport NewsNorfolk

10B888

11B

NortonPetersburgPoquosonPortsmouthRadford

89B9B9B

11B

RichmondRoanokeSalemSouth BostonStaunton

88

11B8

11B

SuffolkVirginia BeachWaynesboroWilliamsburgWinchester

Independent Cities

Zone County

8 Accomack

9B Albemarie

10B Alleghany

9B Amelia

9B Amherst

9B Appomattox

10B Arlington

11B Augusta

11B Bath

9B Bedford

11B Bland

9B Botetourt

8 Brunswick

10B Buchanan

9B Buckingham

Zone County

9B Campbell

9B Caroline

11B Carroll

8 Charles City

9B Charlotte

8 Chesterfield

11B Clarke

10B Craig

10B Culpeper

9B Cumberland

10B Dickenson

8 Dinwiddie

9B Essex

10B Fairfax

10B Fauquier

Zone County

11B Floyd

9B Fluvanna

10B Franklin

11B Frederick

10B Giles

8 Gloucester

9B Goochland

11B Grayson

10B Greene

8 Greensville

9B Halifax

9B Hanover

8 Henrico

10B Henry

11B Highland

Zone County

8 Isle Of Wight

8 James City

9B King And Queen

9B King George

9B King William

8 Lancaster

10B Lee

10B Loudoun

9B Louisa

9B Lunenburg

11B Madison

8 Mathews

9B Mecklenburg

8 Middlesex

Zone County

11B Montgomery

8 Nansemond

9B Nelson

8 New Kent

8 Northampton

8 Northumberland

9B Nottoway

Zone County

10B Orange

11B Page

10B Patrick

9B Pittsylvania

9B Powhatan

9B Prince Edward

8 Prince George

Zone County

10B Prince William

11B Pulaski

11B Rappahannock

8 Richmond

9B Roanoke

9B Rockbridge

11B Rockingham

10B Russell

Zone County

10B Scott

11B Shenandoah

11B Smyth

8 Southampton

10B Spotsylvania

10B Stafford

8 Surry

8 Sussex

11B Tazewell

11B Warren

11B Washington

8 Westmoreland

10B Wise

11B Wythe

8 York

FIGURE 902.1(47)VIRGINIA

Zone City

10B Alexandria

9B Bedford

11B Bristol

9B Buena Vista

9B Charlottesville

8 Chesapeake

Zone City

10B Clifton Forge

8 Colonial Heights

10B Covington

9B Danville

8 Emporia

Zone City

10B Fairfax

10B Falls Church

8 Franklin

10B Fredericksburg

11B Galax

Zone City

8 Hampton

11B Harrisonburg

8 Hopewell

9B Lexington

9B Lynchburg

Zone City

10B Manassas

10B Manassas Park

10B Martinsville

8 Newport News

8 Norfolk

Zone City

10B Norton

8 Petersburg

8 Poquoson

8 Portsmouth

11B Radford

Zone City

8 Richmond

9B Roanoke

9B Salem

9B South Boston

11B Staunton

Zone City

8 Suffolk

8 Virginia Beach

11B Waynesboro

8 Williamsburg

11B Winchester

Independent Cities

11





CL

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2003 INT

ER

NA

TIO

NA

L E

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RG

Y C

ON

SE

RV

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®193

Zone 10A

Zone 11A

Zone 11B

Zone 12A

Zone 12B

Zone 14A

Zone 15

WASHINGTON

CountyZone

Adams12BAsotin12ABenton11BChelan12BClallam12AClark11AColumbia12ACowlitz11ADouglas14AFerry15Franklin11BGarfield12AGrant12BGrays Harbor11AIsland12AJefferson11AKing10AKitsap11AKittitas14AKlickitat12ALewis11ALincoln15Mason11AOkanogan15Pacific11APend Oreille15Pierce11ASan Juan12ASkagit11ASkamania11ASnohomish11ASpokane14AStevens15Thurston11AWahkiakum11AWalla Walla11BWhatcom12AWhitman14AYakima12A

CountyZone

Adams12B

Asotin12A

Benton11B

Chelan12B

Clallam12A

Clark11A

Columbia12A

Cowlitz11A

Douglas14A

Ferry15

Franklin11B

Garfield12A

Grant12B

Grays Harbor11A

Island12A

Jefferson11A

King10A

Kitsap11A

Kittitas14A

Klickitat12A

Lewis11A

Lincoln15

Mason11A

Okanogan15

Pacific11A

Pend Oreille15

Pierce11A

San Juan12A

Skagit11A

Skamania11A

Snohomish11A

Spokane14A

Stevens15

Thurston11A

Wahkiakum11A

Walla Walla11B

Whatcom12A

Whitman14A

Yakima12A

FIGURE 902.1(48)WASHINGTON

12





CL

IMA

TE

MA

PS

1942003 IN

TE

RN

AT

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AL

EN

ER

GY

CO

NS

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VA

TIO

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Zone 10B

Zone 11B

Zone 12A

Zone 13A

WEST VIRGINIA

CountyZone

Barbour13ABerkeley11BBoone10BBraxton11BBrooke12ACabell10BCalhoun11BClay11BDoddridge12AFayette12AGilmer11BGrant13AGreenbrier12AHampshire11BHancock12AHardy12AHarrison12AJackson11BJefferson11B

CountyZone

Kanawha10BLewis12ALincoln10BLogan10BMarion12AMarshall12AMason11BMcdowell11BMercer11BMineral12AMingo10BMonongalia12AMonroe11BMorgan11BNicholas12AOhio12APendleton13APleasants11B

CountyZone

Pocahontas13APreston13APutnam10BRaleigh12ARandolph13ARitchie11BRoane11BSummers12ATaylor12ATucker13ATyler11BUpshur12AWayne10BWebster12AWetzel12AWirt11BWood11BWyoming11B

CountyZone

Barbour13A

Berkeley11B

Boone10B

Braxton11B

Brooke12A

Cabell10B

Calhoun11B

Clay11B

Doddridge12A

Fayette12A

Gilmer11B

Grant13A

Greenbrier12A

Hampshire11B

Hancock12A

Hardy12A

Harrison12A

Jackson11B

Jefferson11B

FIGURE 902.1(49)WEST VIRGINIA

CountyZone

Kanawha10B

Lewis12A

Lincoln10B

Logan10B

Marion12A

Marshall12A

Mason11B

Mcdowell11B

Mercer11B

Mineral12A

Mingo10B

Monongalia12A

Monroe11B

Morgan11B

Nicholas12A

Ohio12A

Pendleton13A

Pleasants11B

CountyZone

Pocahontas13A

Preston13A

Putnam10B

Raleigh12A

Randolph13A

Ritchie11B

Roane11B

Summers12A

Taylor12A

Tucker13A

Tyler11B

Upshur12A

Wayne10B

Webster12A

Wetzel12A

Wirt11B

Wood11B

Wyoming11B

13





CL

IMA

TE

MA

PS

2003 INT

ER

NA

TIO

NA

L E

NE

RG

Y C

ON

SE

RV

AT

ION

CO

DE

®195

Zone 15

Zone 16

Zone 17

WISCONSIN

CountyZone

Adams15Ashland17Barron16Bayfield17Brown15Buffalo15Burnett17Calumet15Chippewa15Clark15Columbia15Crawford15Dane15Dodge15Door15Douglas17Dunn15Eau Claire15Florence17Fond Du Lac15Forest17Grant15Green15Green Lake15Iowa15Iron17Jackson15Jefferson15Juneau15Kenosha15Kewaunee15La Crosse15Lafayette15Langlade17Lincoln17Manitowoc15

CountyZone

Marathon15Marinette15Marquette15Menominee15Milwaukee15Monroe15Oconto15Oneida17Outagamie15Ozaukee15Pepin15Pierce15Polk16Portage15Price17Racine15Richland15Rock15Rusk16Sauk15Sawyer17Shawano15Sheboygan15St Croix15Taylor17Trempealeau15Vernon15Vilas17Walworth15Washburn17Washington15Waukesha15Waupaca15Waushara15Winnebago15Wood15

CountyZone

Adams15

Ashland17

Barron16

Bayfield17

Brown15

Buffalo15

Burnett17

Calumet15

Chippewa15

Clark15

Columbia15

Crawford15

Dane15

Dodge15

Door15

Douglas17

Dunn15

Eau Claire15

Florence17

Fond Du Lac15

Forest17

Grant15

Green15

Green Lake15

Iowa15

Iron17

Jackson15

Jefferson15

Juneau15

Kenosha15

Kewaunee15

La Crosse15

Lafayette15

Langlade17

Lincoln17

Manitowoc15

CountyZone

Marathon15

Marinette15

Marquette15

Menominee15

Milwaukee15

Monroe15

Oconto15

Oneida17

Outagamie15

Ozaukee15

Pepin15

Pierce15

Polk16

Portage15

Price17

Racine15

Richland15

Rock15

Rusk16

Sauk15

Sawyer17

Shawano15

Sheboygan15

St Croix15

Taylor17

Trempealeau15

Vernon15

Vilas17

Walworth15

Washburn17

Washington15

Waukesha15

Waupaca15

Waushara15

Winnebago15

Wood15

FIGURE 902.1(50)WISCONSIN

14





CL

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TE

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1962003 IN

TE

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AL

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GY

CO

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ER

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Zone 14B

Zone 15

Zone 16

Zone 17

WYOMING

CountyZone

Albany16Big Horn15Campbell15Carbon16Converse15Crook15Fremont15Goshen14BHot Springs15Johnson15Laramie15Lincoln17Natrona15Niobrara15Park15Platte14BSheridan15Sublette17Sweetwater16Teton17Uinta16Washakie15Weston15

CountyZone

Albany16

Big Horn15

Campbell15

Carbon16

Converse15

Crook15

Fremont15

Goshen14B

Hot Springs15

Johnson15

Laramie15

Lincoln17

Natrona15

Niobrara15

Park15

Platte14B

Sheridan15

Sublette17

Sweetwater16

Teton17

Uinta16

Washakie15

Weston15

FIGURE 902.1(51)WYOMING

15





CHAP TER 10

REF ER ENCED STAN DARDS

This chapter lists the standards that are referenced in various sections of this document. The standards are listed herein by thepromulgating agency of the standard, the standard identification, the effective date and title, and the section or sections of thisdocument that reference the standard. The application of the referenced standards shall be as specified in Section 107.

Amer i can Ar chi tec tural Man u fac turers As so ci a tion1827 Walden Of fice SquareSuite 104Schaumburg, IL 60173-4268AAMA

Stan dard Ref er encedref er ence in codenum ber Ti tle sec tion num ber

101/I.S.2—97 Voluntary Specifications for Aluminum, Vinyl (PVC) and Wood Windows and Glass Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 502.1.4.1, 601.3.2.2, 802.3.1

101/I.S.2/NAFS—02 Voluntary Performance Specification for Windows, Skylights and Glass Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802.3.1

Air Move ment and Con trol As so ci a tion In ter na tional30 West Uni ver sity DriveArlington Heights, IL 60004-1806AMCA


500—89 Test Methods for Louvers, Dampers, and Shutters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802.3.4

Amer i can Na tional Stan dards In sti tute25 West 43rd StreetFourth FloorNew York, NY 10036ANSI


Z21.10.3—98 Gas Water Heaters, Volume III - Storage Water Heaters with Input Ratings Above 75,000 Btu per Hour, Circulating Tank and Instantaneous—with Addenda Z21.10.3a-99 . . . . . . . . . . . . . . . . . . . . . . . . Table 504.2.1, Table 804.2

Z21.13—99 Gas-Fired Low-Pressure Steam and Hot Water Boilers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(5)Z21.47—00 Gas-Fired Central Furnaces—with Addenda Z21.47a-2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(4)Z21.56—98 Gas-Fired Pool Heaters—with Z21.56a—with Addenda-1999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 504.2.1

Z83.8—96 Gas Unit Heaters—with Addendum Z83.8a-1997. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(4)Z83.9—96 Gas-fired Duct Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(4)

Air Con di tioning and Re frig er a tion In sti tute4301 North Fairfax DriveSuite 200Arlington, VA 22203ARI


210/240—94 Unitary Air-Conditioning and Air-Source Heat Pump Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 503.2,Table 803.2.2(1), Table 803.2.2(2)

310/380—93 Standard for Packaged Terminal Air-Conditioning and Heat Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202, Table 803.2.2(3)325—98 Ground Water-Source Heat Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.3.2(2)340/360—2000 Commercial and Industrial Unitary Air-Conditioning and Heat Pump

Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(1), Table 803.2.2(2)365—94 Commercial and Industrial Unitary Air-Conditioning Condensing Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.3.2(1)460-94 Remote Mechanical-Draft Air-Cooled Refrigerant Condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.3.2(6)550/590—98 Water Chilling Packages Using the Vapor Compression Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.3.2(2)


ARI—con tin ued560—92 Absorption Water Chilling and Water Heating Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.3.2(2)

13256-1 (1998) Water-source Heat Pumps - Testing and Rating for Performance - Part 1: Water-to-Air and Brine-to-Air Heat Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(2)

Amer i can So ci ety of Heating, Re frig er ating and Air-Con di tioning En gi neers, Inc.1791 Tullie Cir cle, NEAt lanta, GA 30329-2305ASHRAE


136—1993 (RA 2001) A Method of Determining Air Change Rates in Detached Dwellings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402.2.3.9146-1998 Testing and Rating Pool Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 804.213256-1 (1998) Water-source Heat Pumps - Testing and Rating for Performance - Part 1: Water-to-Air and

Brine-to-Air Heat Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(2)55—1992 Thermal Environmental Conditions for Human Occupancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20290.1—2001 Energy Standard for Buildings Except Low-Rise Residential Buildings. . . . . . . . . . . . . . . . . . . . . . . 701.1, 801.2, 802.1, 802.2ASHRAE—1999 ASHRAE HVAC Applications Handbook-1999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504.2.2ASHRAE—2001 ASHRAE Fundamentals Handbook- 2001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 302.1, 402.4.2, 502.2.1.1.2,

502.2.2, 503.3.1, 803.2.1ASHRAE—2000 ASHRAE HVAC Systems and Equipment Handbook-2000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503.3.1, 803.2.1

Amer i can So ci ety of Me chan i cal En gi neersThree Park Av e nueNew York, NY 10016-5990ASME


A112.18.1-2000 Plumbing Fixture Fittings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504.6.1PTC 4.1 - 1964 Steam Generating Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(5)

ASTM In ter na tional100 Barr Har bor DriveWest Conshohocken, PA 19428-2859ASTM


C 236—93e1 Standard Test Method for Steady-State Thermal Performance of Building Assemblies by Means of a Guarded Hot Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602.1.1.1

C 518—98 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 503.3.3.3

C 976 - 90(1996)96e1 Standard Test Method for Thermal Performance of Building Assemblies by Means of a Calibrated Hot Box . . . . . . . 602.1.1.1E 96—00 Standard Test Methods for Water Vapor Transmission of Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502.1.1, 602.1.7,

802.1.2E 283—99 Test Method for Determining the Rate of Air Leakage Through Exterior Windows,

Curtain Walls and Doors Under Specified Pressure Differences Across the Specimen . . . . . . . . . . . . . . . . . . . . . . . . 502.1.3,Table 502.1.4.1, 802.3.2, 802.3.7

E 779—99 Standard Test Method for Determining Air Leakage Rate by Fan Pressurization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402.2.3.9

Cooling Technology In sti tute2611 FM 1960 West, Suite H-200Hous ton, TX 77068-3730CTI


STD-201 (1996) Certification Standard for Commercial Water Cooling Towers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.3.2(6)ATC-105 (1997) Acceptance Test Code for Water Cooling Towers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.3.2(6)

REFERENCED STANDARDS


U.S. De part ment of En ergyc/o Su per in ten dent of Doc u mentsU.S. Gov ern ment Print ing Of ficeWash ing ton, DC 20402-9325DOE


10 CFR Part 430, Subpart B, Appendix E (1998) Uniform Test Method for Measuring the Energy Consumption of

Water Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 504.2.1, Table 803.2.2(4), Table 804.210 CFR Part 430,Subpart B, Appendix N (1998) Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers . . . . . . . Table 503.2, Table 803.2.2(5),

Table 804.210 CFR Part 430, Subpart B, Test Procedures (1998) Energy Conservation Program for Consumer Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202ORNL/Sub-86-72143/1-88 Building Foundation Design Handbook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 502.2, 502.2.1.5, 502.2.3.5

DOE/EIA—0376 (Current Edition) State Energy Prices and Expenditure Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 806.2.3

Hydronics In sti tute, Di vi sion of the Gas Ap pli ance Man u fac turers As so ci a tionP.O. Box 218Berke ley Heights, NJ 07054HI


HBS I=B=R - Testing and Rating Standard for Heating Boilers, 1989 Ed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(5)

In ter na tional Code Coun cil, Inc.5203 Leesburg Pike, Suite 600Falls Church, VA 22041-3401ICC


IBC—03 International Building Code® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.3

ICC EC—03 ICC Electrical Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.3

IEBC—03 International Existing Building Code™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.2IFC—03 International Fire Code®. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.3

IFGC—03 International Fuel Gas Code®. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.3IMC—03 International Mechanical Code® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.3, 202, 503.3.3.4, 503.3.3.4.1, 503.3.3.4.2, 803.2.5,

803.2.6, 803.2.8.1, 803.2.8.1.1, 803.2.8.1.2, 803.3.4, 803.3.8.1IPC—03 International Plumbing Code® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.3

Il lu mi nat ing En gi neering So ci ety of North Amer ica120 Wall Street, 17th FloorNew York, NY 10005-4001IESNA


90.1-2001 Energy Standard for Buildings Except Low-Rise Residential Buildings. . . . . . . . . . . . . . . . . . . . . . . 701.1, 801.2, 802.1, 802.2

Na tional Fen es tra tion Rat ing Coun cil, Inc.8484 Geor gia Av e nue Suite 320Sil ver Spring, MD 20910NFRC


100—01 Procedure for Determining Fenestration Product U-Factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.5.2, 601.3.2,601.3.2.1



NFRC—continued200—01 Procedure for Determining Fenestration Product Solar Heat Gain Coefficients and

Visible Transmittance at Normal Incidence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.5.2, 601.3.2, 601.3.2.1400-01 Procedure for Determining Fenestration Product Air Leakage . . . . . . . . . . . . . . . . . . . . . . . Table 502.1.4.1, 601.3.2.2, 802.3.1

Na tional Oce anic and At mo spheric Ad min is tra tionU.S. De part ment of Com mercec/o Su per in ten dent of Doc u mentsU.S. Gov ern ment Print ing Of ficeWash ing ton, DC 20402-9325NOAA


CLIM 81-2 Annual Degree Days To Selected Bases 1961-1990 Normals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 302.1, 402.2.3.7

Sheet Metal and Air Con di tioning Con trac tors Na tional As so ci a tion, Inc.4021 La fay ette Cen ter DriveChantilly, VA 20151-1209SMACNA


SMACNA—85 HVAC Air Duct Leakage Test Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402.2.3.8, 803.3.6

Un der writers Lab o ra tories Inc.333 Pfingsten RoadNorthbrook, IL 60062-2096UL


181A—98 Closure Systems for Use with Rigid Air Ducts and Air Connectors — with Revisions through December 1998 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503.3.3.4.3, 803.2.8

181B—95 Closure Systems for Use with Flexible Air Ducts and Air Connectors —with Revisions through December 1998 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503.3.3.4.3, 803.2.8

727—98 Oil-Fired Central Furnaces—with Revisions through January 1999. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(4)731—95 Oil-Fired Unit Heaters—with Revisions through January 1999. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(4),

Win dow and Door Man u fac turers As so ci a tion1400 East Touhy Av e nue, Suite 470Des Plaines, IL 60018WDMA


101/I.S.2—97 Voluntary Specifications for Aluminum, Vinyl (PVC) and Wood Windows and Glass Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 502.1.4.1, 601.3.2.2, 802.3.1

101/I.S.2/NAFS—02 Voluntary Performance Specification for Windows, Skylights and Glass Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802.3.1




APPENDIX

The sec tions and con struc tion de tails in De tails 502.2.1.5(1) and 502.2.1.5(2), and Ta bles 502.2.3.1(1), 502.2.3.1(2), 502.2.3.1(3),502.2.3.2, 502.2.3.3, 502.2.3.5 and 502.2.3.6 are in tended to be rep re sen ta tive and not all-inclusive. Adopting agen cies are en cour -aged to add con struc tion de tails and sec tions ap pro pri ate to their spe cific ar eas. Uti li za tion of these ta bles should be cor re lated withlo cal in dus try group prac tices and model code re search rec om men da tions.

A

A = 12" (305 mm) MINIMUMA = 12 MINIMUM″

For SI: 1 inch = 25.4 mm.DETAIL 502.2.1.5(2)

CRAWL SPACE WALL INSULATION—INSTALLATION NO. 2

For SI: 1 inch = 25.4 mm.DETAIL 502.2.1.5(1)

CRAWL SPACE WALL INSULATION—INSTALLATION NO. 1

TABLE 502.2.3.1(1)WALL ASSEMBLIES

(Uw selected shall not exceed the Uo determined by Section 502.2.3.1 for any wall section)

WALL DETAILSa

TYPE ANDSPACING OF

FRAMING(nominal)

R-VALUE OFCAVITY

INSULATIONR-VALUE OFSHEATHING Uw

b

Typical schedules:

Typical interior finish—1. Gypsum wallboard;2. Lath and plaster; or3. 3/8″ minimum wood paneling

Typical exterior finish—1. Stucco;2. Wood or plywood siding; or3. Brick veneer

WOOD STUD CONSTRUCTION

4″ Studs@ 16″ o.c.

11 noninsulating 0.085


13 3 0.064

13 5 0.056

13 7 0.051


15 3 0.059

15 5 0.053

15 7 0.048

6″ Studs@ 16″ o.c.


19 3 0.050

19 5 0.046

19 7 0.041


21 3 0.046

21 5 0.042

21 7 0.038

6″ Studs@ 24″ o.c.


STEEL STUD CONSTRUCTION 4″ Studs@ 16″ o.c.



6″ Studs@ 16″ o.c.


4″ Studs@ 24″ o.c.



6″ Studs@ 24″ o.c.


For SI: 1 inch = 25.4 mm.a. De tails shown are for in su la tion and are not com plete con struc tion de tails.b. Uw cal cu lated based on the ASHRAE Fun da men tals Hand book 2001.

APPENDIX


INTERIOR FINISH

INSULATION SHEATHING

EXTERIOR FINISH

INTERIOR FINISH

INSULATION SHEATHING

EXTERIOR FINISH



WALL DETAILSf R-VALUE OR TYPE Uw AND Ro FOR WALL THICKNESS LISTEDa

PLAIN CONCRETE MASONRY BLOCK CONSTRUCTION 6″ 8″ 10″ 12″

Plain block wytheNo insulation, no interior finish

UwRo

0.372.70

0.333.03

0.313.23

0.303.33

Loose fill in cores, no interior finishUwRo

0.185.56

0.137.69

0.119.09

0.0911.11

Interior finish: 1/2″ gypsumboard on furring strips

No insulation, interior finishUwRo

0.244.17

0.234.35

0.224.55

0.214.76

No insulation, foil-backed gypsum board interior finishUwRo

0.185.56

0.175.88

0.166.25

0.166.25

Cavity insulation and interiorfinish: 1/2″ gypsum board onfurring strips

1″ extruded polystyrene, interior finishUwRo

0.137.69

0.137.69

0.128.33

0.128.33

2″ expanded polystyrene, interior finishUwRo

0.0911.11

0.0911.11

0.0911.11

0.0911.11

2″ extruded polystyrene, interior finishUwRo

0.0812.50

0.0812.50

0.0812.50

0.0812.50

2″ polyisocyanurate, interior finishUwRo

0.0616.67

0.0616.67

0.0616.67

0.0616.67

Interior finish: 1/2″ gypsumboard over fibrous batt or loosefill between studs out from wall

R-11, 2 × 3 studs, interior finishUwRo

0.0714.29

0.0714.29

0.0714.29

0.0714.29


0.0616.67

0.0616.67

0.0616.67

0.0616.67


0.0520.00

0.0520.00

0.0520.00

0.0520.00

MULTI-WYTHE WALLSUw AND Ro FOR WALL THICKNESS LISTEDb,c,d,e

8″ 10″ 12″ 14″

Plain block and clay wythes

No insulation, no interior finish

UwRo

0.323.13

0.263.85

0.244.17

0.224.55

Loose fill in cavity,no interior finish

UwRo

NANA

0.128.33

0.128.33

0.119.09

Cavity insulation and interiorfinish: 1/2″ gypsum board onfurring strips

Loose fill,interior finish

UwRo

0.119.03

0.1010.00

0.1010.00

0.1010.00

Loose fill foil-backed gypsum board,interior finish

UwRo

0.1010.00

0.0911.11

0.0911.11

0.0911.11

1″ expanded polystyrene in cavity,interior finish

UwRo

NANA

0.137.69

0.128.33

0.128.33

2″ expanded polystyrene in cavity,interior finish

UwRo

NANA

0.0812.50

0.0812.50

0.0812.50

1″ extruded polystyrene in cavity,interior finish

UwRo

NANA

0.119.09

0.119.09

0.119.09

2″ extruded polystyrene in cavity,interior finish

UwRo

NANA

0.0714.29

0.0714.29

0.0714.29

1″ polyisocyanurate in cavity,interior finish

UwRo

NANA

0.0812.50

0.0812.50

0.0812.50

2″ polyisocyanurate in cavity,interior finish

UwRo

NANA

0.0520.00

0.0520.00

0.0520.00

1″expanded polystyrene in cavity foil-backed gypsum board,interior finish

UwRo

NANA

0.0911.11

0.0911.11

0.0911.11

1″ extruded polystyrene in cavity foil-backed gypsum board,interior finish

UwRo

NANA

0.0812.50

0.0812.50

0.0812.50

For SI: 1 inch = 25.4 mm, 1 pound per cu bic foot = 0.1572 kg/m3.a. The Uw val ues are for blocks made with con crete hav ing a den sity of 80 pounds per cu bic foot; for other den si ties, the Uw must be cal cu lated based on the R-val ues

pro vided in NCMA TEK 6-1A or the ASHRAE Fun da men tals Hand book 2001.b. 8″ com pos ite wall: 4″ dense outer wythe and hol low-unit in ner wythe.c. 10″ cav ity wall: 4″ dense outer wythe, 2″ air space and 4″ hol low-unit in ner wythe.d. 12″ cav ity wall: 4″ dense outer wythe, 2″ air space and 6″ hol low-unit in ner wythe.e. 14″ cav ity wall: 4″ dense outer wythe, 2″ air space and 8″ hol low-unit in ner wythe.f. Re fer to draw ings in Ta bles 502.2.3.1(1) and 502.2.3.1(3).NA = Not Ap pli ca ble.

APPENDIX




WALL DETAILSd

R-VALUE OF INSULATION Uw RoInterior finish 1/4″ gypsum board applied on furring strips

BRICK MASONRY CONSTRUCTION WITH LOOSE FILL Solid grout in space 0.38 2.63

2″ space with loose fillR-4

0.16 6.25

4″ space with loose fillR-8

0.10 10.00

BRICK MASONRY CONSTRUCTION WITH INSULATION 4 0.12 8.33

6 0.09 11.11

11 0.07 14.29

NORMAL-WEIGHT CONCRETE CONSTRUCTION 4 0.18 5.56

6 0.13 7.69

7 0.12 8.33

11 0.08 12.50

LIGHTWEIGHT CONCRETE CONSTRUCTION 4 0.17 5.88

6 0.12 8.33

7 0.11 9.09

11 0.08 12.50

INSULATING CONCRETE FORM SYSTEM (ICF)c12 0.07 13.55

15 0.06 16.55

16 0.06 17.55

17 0.05 18.55

20 0.05 21.55

22 0.04 23.55

For SI: 1 inch = 25.4 mm.a. The R-value listed is the sum of the val ues for the ex te rior and in te rior in su la tion lay ers.b. The man u fac turer shall be con sulted for the Uw and Ro val ues if the in su lated con crete form sys tem (ICF) uses metal form ties to con nect the in te rior and ex te rior

in su la tion lay ers.c. These val ues shall be per mit ted to be used for con crete ma sonry wall as sem blies with ex te rior and in te rior in su la tion lay ers.d. De tails shown are for in su la tion and are not com plete con struc tion de tails.

APPENDIX


BRICK BRICK

LOOSE FILL

INTERIOR FINISH

INSULATION

BRICK

INTERIOR FINISH

INSULATION

4" MIN.

NORMAL WEIGHTCONCRETE

INTERIOR FINISH

INSULATION

4" MIN.

LIGHT WEIGHTCONCRETE

INTERIOR FINISH

INSULATION

CONCRETEEXTERIOR FINISH

INSULATIONa

a

b

TABLE 502.2.3.2ROOF/CEILING ASSEMBLIES

(Ur selected shall not exceed the value specified in Section 502.2.3.2)

ROOF DETAILSa, b, c

R-VALUE OFINSULATIONc Ur Ro

Typical interior finish—

1. Gypsum wallboard; or2. Lath & plaster

19 0.050 20.00

22 0.040 25.00

30 0.030 33.33

38 0.025 40.00

19 0.050 20.00

22 0.040 25.00

30 0.030 33.33

38 0.025 40.00

Wood decking

9 0.080 12.50

Plywood

10 0.080 12.50

19 0.050 20.00

30 0.030 33.33

a. De tails shown are for in su la tion and are not com plete con struc tion de tails.b. Sky lights not ex ceed ing one per cent of the roof are per mit ted.c. In su la tion in stalled be tween joints.

TABLE 502.2.3.3FLOOR ASSEMBLIES

(Ur selected shall not exceed the Uo specified in Section 502.2.3.3)

FLOOR DETAILSaR-VALUE OFINSULATION Ur Ro

No insulation 0.32 3.13

7 0.11 9.09

11 0.08 12.50

19 0.05 20.00

a. De tails shown are for in su la tion and are not com plete con struc tion de tails.

APPENDIX


RAFTERS

CEILING JOIST

INSULATION

CEILING FINISH(SEE SCHEDULE ABOVE)

BUILT-UP ROOF

SHEATHING

CEILING FINISH(SEE SCHEDULE ABOVE)

AIR SPACE ANDVENTILATION DESIRABLE

INSULATION

CEILING JOIST OR RAFTERS

BEAM

WOOD OR PLYWOOD SHEATHING

CATHEDRAL-TYPE CEILING

BUILT-UP ROOF

RIGID INSULATION

SUB-FLOORINSULATION

FLOORJOIST

GIRDER

TABLE 502.2.3.5CRAWL SPACE FOUNDATION WALL ASSEMBLIES

(U-factor selected shall not exceed the U-factor determined by Section 502.2.3.5)

WALL DETAILSa R-VALUE OF INSULATION U-FACTOR

WOOD FOUNDATION11 0.10

13 0.09

19 0.06

CONCRETE/MASONRY FOUNDATION—INTERIOR INSULATION5 0.15

10 0.08

11 0.08

13 0.07

19 0.05

CONCRETE/MASONRY FOUNDATION—EXTERIOR INSULATION3 0.20

5 0.15

10 0.08

15 0.06

INSULATING CONCRETE FORM SYSTEM (ICF)b, c, d12 0.08

15 0.06

16 0.06

17 0.06

20 0.05

22 0.04

a. De tails shown are for in su la tion and are not com plete con struc tion de tails.b. The R-value listed is the sum of the val ues for the ex te rior and in te rior in su la tion lay ers.c. The man u fac turer shall be con sulted for the U-factor if the in su lated con crete form sys tem (ICF) uses metal form ties to con nect the in te rior and ex te rior in su la tion

lay ers.d. These val ues shall be per mit ted to be used for con crete ma sonry wall as sem blies with ex te rior and in te rior in su la tion lay ers.

APPENDIX


TABLE 502.2.3.6BASEMENT FOUNDATION WALL ASSEMBLIES

(U-factor selected shall not exceed the U-factor determined by Section 502.2.3.6)

WALL DETAILSa R-VALUE OF INSULATION U-FACTOR

WOOD FOUNDATION11 0.08

13 0.08

19 0.06

CONCRETE/MASONRY FOUNDATION—INTERIOR INSULATION5 0.15

6.5 0.12

10 0.08

11 0.08

19 0.06

CONCRETE/MASONRY FOUNDATION—EXTERIOR INSULATION3 0.20

5 0.15

10 0.09

15 0.06

INSULATING CONCRETE FORM SYSTEM (ICF)b, c, d12 0.07

15 0.06

16 0.06

17 0.05

20 0.05

22 0.04

a. De tails shown are for in su la tion and are not com plete con struc tion de tails.b. The R-value listed is the sum of the val ues for the ex te rior and in te rior in su la tion lay ers.c. The man u fac turer shall be con sulted for the U-factor if the in su lated con crete form sys tem (ICF) uses metal form ties to con nect the in te rior and ex te rior in su la tion

lay ers.d. These val ues shall be per mit ted to be used for con crete ma sonry wall as sem blies with ex te rior and in te rior in su la tion lay ers.

APPENDIX


APPENDIX REFERENCED STANDARDS

ASHRAE-2001 ASHRAE Fun da men tals Hand book . . . . . . . . . . . . . . . . . . . . . . . Ta bles 502.2.3.1(1) and 502.2.3.1(2)NCMA TEK 6-1A R-Values of Multi-Wythe Con crete Ma sonry Walls . . . . . . . . . . . . . . . . . . . . . . . . . . Ta ble 502.2.3.1(2)


IN DEX

AADDITIONS AND ALTERATIONS

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . 101.2.2.2, 502.2.5

ADMINISTRATION ANDENFORCEMENT . . . . . . . . . . . . . . . . . . . . Chap ter 1

AIR ECONOMIZERS . . . . . . . . . . . . 803.2.6, 803.3.3.5AIR INFILTRATION

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . . . . . 402.1.3.10

AIR LEAKAGE . . . . . . . . . . . 502.1.4, 601.3.2.2, 802.3AIR SYSTEM BALANCING. . . . . . 503.3.3.7, 803.3.8.1AIR TRANSPORT FACTOR

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . . . . . . 503.3.3.6

ALTERNATE MATERIALS . . . . . . . . . . . . . . . . . . . 103ANNUAL FUEL UTILIZATION EFFICIENCY

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202APPROVED

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202AUTOMATIC

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

BBALANCING. . . . . . . . . . . . . . . . . . . 503.3.3.7, 803.3.8BALLASTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805.3BASEMENT WALLS

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . 402.2.3.10, Table 502.2,

Figure 502.2(6), 502.2.1.6, 502.2.3.6, Tables 502.2.4(1-9), 502.2.4.9, Table 602.1,602.1.5, 802.1.1.2, Tables 802.2(1-37), 802.2.8

BELOW-GRADE WALLS (see BASEMENT WALLS)BI-LEVEL SWITCHING . . . . . . . . . . . . . . . . . 805.2.2.1BOILERS . . . . . . . Table 503.2, Table 803.2.2(5), 804.2BUILDING ENVELOPE

Compliance documentation . . . . . 104, 402.5, 806.5Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . 402, 502, 602, 802System performance criteria. . . . 402.2.1, 402.2.3.3,

806.4System performance method . . . . . . . . . . . 402, 806

CCAULKING AND WEATHERSTRIPPING . . . 502.1.4.2,

602.1.10, 802.3.2CIRCULATING PUMPS . . . . . . . . . . . . . . . 504.4, 804.6CIRCULATING SYSTEMS . . . . . . . . . . . . 504.3, 504.4,

504.7, 804.4CLIMATE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302

CLIMATE ZONES . . . . . . . . . . . . . . . . . . . . Table 302.1By state . . . . . . . . . . . . . . . . . . . Figures 902.1(1-51)Envelope requirements . . . . . . . . Tables 802.2(1-37)

COEFFICIENT OF PERFORMANCE (COP)Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

COMBINED SERVICE WATER HEATING AND SPACE HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504.2.2

COMMERCIAL BUILDINGSCompliance. . . . . . . . . . . . . . . . . . . . . . . . . . 101.3.2Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Design by acceptable practice . . . . . . . . . Chapter 8Design by referenced standard. . . . . . . . . Chapter 7Design by total building performance . . . . . . . . . 806

COMMISSIONING OF HVACSYSTEMS . . . . . . . . . . . . . . . . . . . 503.3.3.7, 803.3.8

Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.3.8.3COMPLIANCE AND ENFORCEMENT . . . . . . . . 101.4CONDITIONED FLOOR AREA

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202CONDITIONED SPACE

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202CONSERVATION OF WATER . . . . . . . . . . . . . . . 509.6CONTROLS

Capabilities . . . . . . . . . . . . . . . . . 503.3.2.2, 803.3.3Economizers . . . . . . . . . . . . . . . . 803.2.6, 803.3.3.5Heat pump . . . . . . . . . . . . . . . . . . . . . . . 803.3.3.1.1Heating and cooling . . . . . . . . . . . . . . . . . 402.2.3.4,

Table 402.2.3.4, 803.3.3Humidity . . . . . . . . . . . . . . . . . . 503.3.2.4, 803.2.3.3Hydronic systems . . . . . . . . . . . . 803.2.4, 803.3.3.7Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805.2Off hour . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.3.3.3Service water heating . . . 504.3, 504.4, 804.2, 804.6Shutoff dampers . . . . . . . . . . . . . . . 803.2.7, 803.3.4Temperature . . . . . . . . . . . . . . . 503.3.2.1, 803.2.3.1Variable air volume systems . . . . 803.3.3.6, 803.3.4Ventilation . . . . . . . . . . . . . . . . . . . . 803.2.5, 803.3.5

COOLING WITH OUTDOOR AIR . . 803.2.6, 803.3.3.5CRAWL SPACE WALLS

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements. . . . . . . . 502.1.5, 502.2, Table 502.2,

Figure 502.2(5), 502.2.3.5,Tables 502.2.4(1-9), 502.2.4.12,

Table 602.1, 602.1.7

DDEADBAND. . . . . . . . . . . . . . 202, 503.3.2.2, 803.3.3.2DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . Chapter 2DEGREE DAY COOLING

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 DEGREE DAY HEATING

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202


DESIGN CONDITIONS . . . . . . . . . . . . . . . . . Chapter 3DETAILS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AppendixDUAL DUCT VAV . . . . . . . . . . . . . . . . . . . . . . 803.3.4.2DUCTS

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Insulation . . . . . . . . . . . . . . . . . . . 503.3.3.3, 803.2.8Sealing. . . . . . . . 503.3.3.4, 803.2.8, 803.3.6, 805.1,

DWELLING UNITDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

EECONOMIZER

Air . . . . . . . . . . . . . . . . . . . . . . . . 803.2.6, 803.3.3.5Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . 803.2.6, 803.3.4.3, 803.3.3.5Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.3.3.5

ELECTRICAL POWER AND LIGHTING. . . . . 505, 805ENERGY ANALYSIS, ANNUAL

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Documentation . . . . . . . . . . . . . 402.5, 403.2, 806.5Requirements . . . . . . . . . . . . . . . . . . . . . 402.1, 806

ENERGY EFFICIENCY RATIO (EER)Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

ENVELOPE, BUILDINGDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

ENVELOPE DESIGNPROCEDURES . . . . . . . . . . . . . . . . 502.2.1, 502.2.2,

502.2.3, 502.2.4, 602, 802EQUIPMENT EFFICIENCIES 503.2, 504.2, 603, 803.2,

803.3.2, 804.2, 806.3.1, 806.4.1EQUIPMENT PERFORMANCE REQUIREMENTS

Boilers. . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(5)Chillers, nonstandard. . . . . . . . . Tables 803.3.2(1-2)Condensing units . . . . . . . . . . . . . . Table 803.3.2(1)Economizer exception . . . . . . . . . . . . . Table 803.2.6General, residential . . . . . . . . . . . . . . . . Table 503.2Heat rejection equipment . . . . . . . . Table 803.3.2(6)Packaged terminal air conditioners

and heat pump . . . . . . . . . . . . . . Table 803.2.2(3)Unitary air conditioners and

condensing units . . . . . . . . . . . . . Table 803.2.2(1)Unitary and applied heat pumps . . . . . Table 803.2.2Warm air duct furnaces and

unit heaters . . . . . . . . . . . . . . . . . Table 803.2.2(4)Warm air furnaces . . . . . . . . . . . . . Table 803.2.2(4)Warm air furnaces/air-conditioning

units . . . . . . . . . . . . . . . . . . . . . . . Table 803.2.2(4)Water chilling packages,

standard . . . . . . . . . . . . . . . . . . . Table 803.3.2(2)Water heating . . . . . . . . . . 504.2, Table 504.2, 804.2

EXEMPT BUILDINGS . . . . . . . . . . . . . . . . . . . . 101.2.1EXISTING BUILDINGS . . . . . . . . . . . . . . . . . . . 101.2.2EXTERIOR LIGHTING . . . . . . . . . . . . . . . . . . . . . 805.5EXTERIOR SHADING . . . . . . . . . . 402.1.3.1.3, 802.2.3

EXTERIOR WALLSDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Thermal performance . . . . . . . . 402.2.1.1, 502, 802

FFENESTRATION . . . . . . . . . . 102.5, 402.2.1.2, 601.3.2

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Rating and labeling . . . . . . . . . . . . . . 102.5, 601.3.2

FURNACE EFFICIENCY . . . . . . . . . . . . . . Table 503.2,Table 803.2.2(4)

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

GGUESTROOMS . . . . . . . . . . . . . . . . . . . . . . . 805.2.2.1GLAZING AREA

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . 402.2.1.3, 502.2, 502.2.1,

502.2.2, 502.2.3, 502.2.4, 502.2.5

HHEAT CAPACITY

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . . . . 502.2.1.1.2,

Tables 502.2.1.1.2(1-3), 502.2.4.17,Tables 502.2.4.17(1-2)

HEAT PUMP. . . . . . . . Table 503.2, Tables 803.2.2(2-3)Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

HEAT TRAPS . . . . . . . . . . . . . . . . . . . . . . 504.7, 804.4Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

HEATING AND COOLING CRITERIA . . . . Table 502.2HEATING AND COOLING

LOADS . . . . . . . . . . . . . . . 402.4.1, 402.5.6, 503.3.1,803.2.1, 803.3.1

HOT WATER . . . . . . . . . . . . . . . . . . . . . . . 504.4, 804.2Annual energy performance . . . . . . 402.2.3.6, 402.4Piping insulation . . . . . . . . . . . . . . . . . . 504.5, 804.5System controls . . . . . . . 504.3, 504.4, 804.2, 804.6

HUMIDISTATDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . 503.3.2.4, 803.2.3.2, 803.3.3.1

HYDRONIC SYSTEM BALANCING. . . . . . . . 803.3.8.2

IIDENTIFICATION (MATERIALS, EQUIPMENT

AND SYSTEM) . . . . . . . . . . . . . . . . . . . . . . . . . 102.1INDIRECTLY CONDITIONED SPACE

(see CONDITIONED SPACE)INFILTRATION, AIR

LEAKAGE . . . . . . . . . . . . . 402.2.3.9, 502.1.4, 802.3Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

INSPECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

INDEX


INSULATIONIdentification . . . . . . . . . . . . . . . . . . . . . . . . . . 102.5Installation . . . . . . . . . . . . . . . . . . . . . 102.4, 601.3.1

INSULATING SHEATHINGDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . 502.2.4.1, 502.2.4.16

INTEGRATED PART LOAD VALUEDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

INTERIOR LIGHTING POWER . . . . . . . . . . . . . . 805.5

LLABELED

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . 102.3, 102.5.2, 601.3.2, 601.3.3

LIGHTING POWERDesign procedures . . . . . . . . . . . . . . . . . . . . 805.5.2Exterior connected. . . . . . . . . . . . . . . 805.6, 806.2.8Interior connected . . . 805.5, Table 805.5.2, 806.4.7Manufacturer’s information . . . . . . . . 102.3, 601.3.3

LIGHTING SYSTEMS . . . . . . . . . . . . . . . 505, 605, 805Controls, additional . . . . . . . . . . . . . . . . . . . . 805.2.2Controls, exterior . . . . . . . . . . . . . . . . . . . . . 805.2.3Controls, interior . . . . . . . . . . . . . . . . . . . . . . 805.2.1Decorative . . . . . . . . . . . . . . . . . . . . . . Table 805.5.2For visual display terminals. . . . . . . . . Table 805.5.2Guestrooms. . . . . . . . . . . . . . . . . . . . . . . . 805.2.2.3Line voltage . . . . . . . . . . . . . . . . . . . . . . . . 805.5.1.4Merchandise . . . . . . . . . . . . . . . . . . . . Table 805.5.2Plug-in busway. . . . . . . . . . . . . . . . . . . . . . 805.5.1.4Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805.5.1.4

LISTEDDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

LOW-VOLTAGE LIGHTINGDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . . . . . . 805.4.1.2

LUMINAIREDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

MMANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.3.8.3MATERIALS AND EQUIPMENT . . . . . . . . . 102, 601.3MECHANICAL SYSTEMS AND

EQUIPMENT . . . . . . . . . . . . . . . . . . . 503, 603.3, 803MECHANICAL VENTILATION . . . . . . 503.3.3.5, 803.5

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202MOISTURE CONTROL . . . . . . . . . . . . 502.1.1, 802.1.2MULTIFAMILY DWELLING

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202MULTIPLE SINGLE-FAMILY DWELLING

(TOWNHOUSE)Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

MULTIPLE ZONE SYSTEMS . . . . . . . . . . . . . . 803.3.4

NNONCIRCULATING SYSTEMS . . . . . . . . . . . . . . 804.4NONDEPLETABLE/RENEWABLE ENERGY

SOURCESDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . . . . 403, 806.2.4

OOCCUPANCY

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . 101.2.2.4, 101.2.3

OCCUPANCY SENSORS. . . . . . . . . . . . . . . . 805.2.1.1OFF-HOUR, CONTROLS . . . . . . . . . . . . . . . . 803.3.3.3OPAQUE AREAS

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202ORIENTATION . . . . . . . 402.2.2.1, 402.2.3.1.1, 402.5.3OVERHANG, PROJECTION FACTOR . . . . . . . 802.2.3OZONE DEPLETION FACTOR

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

PPACKAGED TERMINAL AIR CONDITIONER (PTAC)

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . Table 803.2.2(3)

PACKAGED TERMINAL HEAT PUMPDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . Table 803.2.2(3)

PARALLEL PATH CORRECTIONFACTORS . . . . . . . . . . . 502.1.1.1, Table 502.2.1.1.1

PHOTOCELL . . . . . . . . . . . . . . . . . . . . . . . . . . . 805.2.2PIPE INSULATION . . . . . . . . . . . . 503.3.3.1, 503.3.3.2,

504.5, 803.2.9, 803.3.7, 804.5PLANS AND SPECIFICATIONS104POOL COVERS. . . . . . . . . . . . . . . . . . . . . . . . . 504.3.2PROJECTION FACTOR . . . . . . . . . . . . . . . . . . 802.2.3PROPOSED DESIGN

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . 402, 502.2.2, 806

PUMPING SYSTEMS . . . . . . . . . . . . . . . 504.3, 504.4, 803.3.3.7.1, 803.3.8.2

RR-VALUE (see THERMAL RESISTANCE)RECOOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.3.4REFERENCED STANDARDS . . . . . . . 107, Chapter 10REHEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.3.4RENEWABLE/NONDEPLETABLE ENERGY

SOURCES . . . . . . . . . . . . . . . . . . . . . . . 403, 806.2.4Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

INDEX


REPAIRRequirements . . . . . . . . . . . . . . . . . . . . . . 101.2.2.2Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

RESET CONTROL . . . . . . . . . . . . . . . . . . . 803.3.3.7.4RESIDENTIAL BUILDINGS

Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . 101.4.1Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Design by component performance . . . . . Chapter 5Design by system analysis and

renewable sources. . . . . . . . . . . . . . . . . Chapter 4Design using simplified prescriptive

requirements . . . . . . . . . . . . . . . . . . . . . Chapter 6ROOF ASSEMBLY

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements. . . . . . . . . Figure 502.2(2), 502.2.1.2,

502.2.3.2, Tables 502.2.4(1-9),502.2.4.7, Table 602.1, 602.1.2

SSCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.2SCREW LAMP HOLDERS

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . . . . . . 805.5.1.1

SEASONAL ENERGY EFFICIENCY RATIODefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

SERVICE WATER HEATINGDefined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . 504, 604, 804, 806.2.8, 806.3.1

SHADING . . . . . . 402.2.3.1.2, 402.2.3.1.3, 402.2.3.1.4Projection factor . . . . . . . . . . . . . . . . . . . . . . 802.2.3

SHOWER HEADS . . . . . . . . . . . . . . . . . . . . . . . 504.6.1SHUTOFF DAMPERS . . . . . . . . . . 503.3.3.5, 803.3.3.4SIMULATION TOOL

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . 402.4.7, 806.2.1

SINGLE ZONE. . . . . . . . . . . . . . . . . . . . . . 503.1, 803.2SIZING

Equipment and system . . . . . . . . 803.2.1, 803.3.1.1SKYLIGHTS . . . . . . . . . . . . . . 402.2.1.4, 502.2.1.22.1,

602.4, 502.2.5Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Maximum exempt area . . . . . . . . 502.2.4.4, 802.2.5

SLAB-EDGE INSULATION . . . . . . . . . . . . . . . 102.4.1,Figure 502.2(3), 502.2.1.4, 502.2.3.4,

Tables 502.2.4(1-9), 502.2.4.10, 502.2.4.11,Table 602.1, 602.1.6, Tables 802.2(1-37), 802.2.7

SOLAR HEAT GAIN COEFFICIENT (SHGC) . . . 102.3STANDARD DESIGN

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202STANDARDS, REFERENCED . . . . . . 107, Chapter 10STEEL FRAMING . . . . . . . . . . . 502.2.1.1.1, 502.2.1.2,

502.2.1.3, 502.2.3.1, 502.2.3.2, 502.2.3.3,502.2.4.16, Tables 502.9.16(1-2), 502.2.4.18,

Tables 502.2.4.18(1-2), 502.2.4.19, Table 502.2.4.19

STANDARD TRUSS . . . . . . . . . . . . . 502.2.4.5, 602.1.2Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

SUNROOM ADDITION . . . . . . . . . . . . . . . . . . 502.2.2.5Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

SWIMMING POOLS . . . . . . . . . . . . . . . . . . . . . . . 504.3SYSTEMS ANALYSIS . . . . . . . . . . . . . . . . . . . 402, 806

TTANDEM WIRING. . . . . . . . . . . . . . . . . . . . . . . . . 805.3TERMITE

INFESTATION . . . . . . . Table 502.2, Figure 502.2(7)THERMAL ISOLATION. . . . . . . . . 502.2.5, Table 502.5

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202THERMAL

MASS . . . . . . . . 502.2.1.1.2, Tables 502.2.1.1.2(1-3),502.2.4.17, Tables 502.2.4.17(1-2)

THERMAL RESISTANCE (R)Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

THERMAL TRANSMITTANCE (U)Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

TOTAL BUILDING PERFORMANCECommercial . . . . . . . . . . . . . . . . . . . . . . . . . . . . 806Residential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402

TOWNHOUSE (see MULTIPLE SINGLE-FAMILYDWELLING)

TYPE A-1 AND A-2 RESIDENTIAL BUILDINGS(see RESIDENTIAL BUILDINGS)

UU-FACTOR (see THERMAL TRANSMITTANCE)

VVAPOR RETARDER . . . . . . . . . . . . . . 502.1.1, 802.1.2VARIABLE AIR VOLUME

SYSTEMS (VAV) . . . . . . . . . . . . . . 803.3.3.6, 803.3.4VENTILATION . . . . . . . . . . 503.3.3.5, 803.2.5, 803.3.5

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

WWALLS (see EXTERIOR WALLS AND ENVELOPE,

BUILDING)WALLS ADJACENT TO UNCONDITIONED

SPACE . . . . . . 802.1.1.3, Tables 802.2(1-37), 802.2.9WATER CONSERVATION . . . . . . . . . . . . . . . . . . 504.6WATER ECONOMIZER . . . . . . . . . . . . . . . . . 803.3.3.5WATER HEATING . . . . 504, 604, 804, 806.2.8, 806.3.1WINDOW AREA (see GLAZING AREA)WINDOW PROJECTION FACTOR

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements . . . . . . . . . . . . . . . . . . . . . . . . 802.2.3

WINDOW-TO-WALL RATIO(see GLAZING AREA)

INDEX


WIRING, TANDEM . . . . . . . . . . . . . . . . . . . . . . . . 805.3

ZZONE

Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Requirements. . . . . . . . . Table 402.1.3.5, 503.3.2.1,

803.3.3, 803.3.4ZONE ISOLATION. . . . . . . . . . . . . . . . . . . . . . . 803.3.4

INDEX


International Energy Conservation Code 2nd Edition

Documents

Transcript of International Energy Conservation Code 2nd Edition