3812713 Title 24 Part 5 Slice 5 2007 California Plumbing Code

8/2/2019 3812713 Title 24 Part 5 Slice 5 2007 California Plumbing Code

1/102

APPENDIX ARECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYSTEM

Because of the variable conditions encountered, it isimpractical to lay down definite detailed rules ofprocedure for determining the sizes of water supplypipes in an appendix, which must necessarily belimited in length. For a more adequate understandingof the problems involved, refer to Water-DistributingSystems for Buildings, ReportBMS 79 of the NationalBureau of Standards; and Plumbing Manual, ReportBMS 66, also publish!=d by the National Bureau ofStandards.

The following is a suggested order ofprocedure for sizing the water supply system.A 1 Preliminary Information.

A 1.1 Obtain the necessary informationregarding the minimum daily service pressure in thearea where the building is to be located.A 1.2 I f the building supply is to be metered,obtain information regarding friction loss relative tothe rate of flow for meters in the range of sizes likelyto be used. Friction-loss data can be obtained frommost manufacturers of water meters. Friction lossesfor disk-type meters maybe obtained from ChartA-I.A 1.3 Obtain all available local information

regarding the use of different kinds of pipe withrespect both to durability and to decrease in capacitywith length of service in the particularwater supply.A 2 Demand Load.

A 2.1 Est imate the supply demand for thebui ld ing main and the principal branches andrisers of the system by totaling the fixture units oneach, Table A-2, and then by reading thecorresponding ordinate from Chart A-2 or A-3,whichever is applicable.

A 2.2 Estimate continuous supply demands ingallons pe r minute (liters per second) for lawnsprinklers, air conditioners, etc., and add the sum tothe total demand for fixtures. The result is theestimated supply demand of the building supply.A 3 Permissible Friction Loss.

A 3.1 Decide what is the desirable minimumresidual pressure that shall be maintained at thehighest fixture in the supply system. I f the highestgroup of fixtures contains flushometer valves, theresidual pressure for the group shall not be less thanfifteen (15) psi (103 kPa). For flush tank supplies, the

available residual pressure shall no t be less thaneight (8) psi (55 kPa).A 3.2 Determine the elevation of the highestfixture or group of fixtures above the water (street)main. Multiply this difference in elevation by fortythree hundredths (0.43). The result is the loss in staticpressure in psi (pounds per square inch) (kPa).A 3.3 Subtract the sum of loss in static pressure

and the residual pressure to be maintained at thehighest fixture from the average minimum dailyservice pressure. The result will be the p ressureavailable for friction loss in the supply pipes, if nowater meter is used. If a meter is to be installed, thefriction loss in the meter for the estimated maximumdemand should also be subtracted from the servicepressure to determine the pressure loss available forfriction loss in the supply pipes.

A 3.4 Determine the developed length of pipefrom the water (street) main to the highest fixture. Ifclose estimates are desired, compute with the aid ofTable A-3 the equivalent length of pipe for all fittingsin the line from the water (street) main to the highestfixture and add the sum to the developed length. Thepressure available for friction loss in pounds persquare inch (kPa), divided by the developed lengthsof pipe from the water (street) main to the highestfixture, times one hundred (100), will be the averagepermissible friction loss per one hundred (100) foot(30,480 mm) length of pipe.A 4 Size of Building Supply.

A 4.1 Knowing the permissible friction loss perone hundred (100) feet (30,480 mm) of pipe and thetotal demand, the diameter of the building supplypipe may be obtained from Charts A-4, A-5, A-6, orA-7, whichever is applicable. The diameter of pipeon or next above the coordinate point correspondingto the estimated total demand and the permissiblefriction loss will be the size needed up to the firstbranch from the building supply pipe.A 4.2 If copper tubing or brass pipe is to be usedfor the supply piping and i f the character of thewater is such that only slight changes in thehydraulic characteristicsmay be expected, Chart A-4maybe used.

A 4.3 Chart A-5 should be used for ferrous pipewith only the most favorable water supply in regardscorrosion and caking. I f the water is hard orcorrosive, Chart A-6 or A-7 will be applicable. Forextremely hard water, it will be advisable to make

311


2/102

Appendix Aadditional allowances for the reduction of capacity ofhot-water lines in service.A 5 Size of Principal Branches and Risers.

A 5.1 The required size of branches and risersmay be obtained in the same manner as the buildingsupply, by obtaining the demand load on eachbranch or riser and using the permissible friction losscomputed in Section A 3.

A 5.2 Fixture branches to the building supply,if they are sized for the same permissible frictionloss per one hundred (100) feet (30,480 mm) ofpipe as the branches and risers to the highest levelin the building, may lead to inadequate watersupply to the upper floor of a building. This maybe controlled by (1) selecting the sizes of pipe forthe different branches so that the total friction lossin each lower branch is approximately equal tothe total loss in the riser, including both frictionloss and loss in static pressure; (2) throttling eachsuch branch by means of a valve until th epreceding balance is obtained; (3) increasing thesize of the building supply and r isers above themin imum requi red to meet the maximumpermissible friction loss.

A 5.3 The size of branches and mains servingflushometer tanks shall be consistent with sizingprocedures for flush tankwater closets.A 6 General.

A 6.1 Velocities shall not exceed 10 feet/ second(3.0 m/ sec.) or the maximum values given in theappropriate Installation Standard, except asotherwise approved by the Authority HavingJurisdiction.

A 6.2 If a pressure-reducing valve is used in thebuilding supply, the developed length of supplypiping a.nd the permissible friction loss should becomputed from thebuilding side of the valve.

A 6.3 The allowances in Table A-3 for fittingsare based on nonrecessed threaded fittings. Forrecessed threaded fittings and streamlined solderedfittings, one-half (1/2) the allowances given in thetable will be ample.A 7 Example.

A 7.1 Assume an office building of four (4)stories and basement; pressure on the building sideof the pressure-reducing valve of fifty-five (55) psi(379 kPa) (after an allowance for reduced pressurefalloff at peak demand); an elevation of highestfixture above the pressure-reducing valve of fortyfive (45) feet (13,716 mm); a developed length of312

2007 CALIFORNIA PLUMBING CODEpipe from the pressure-reducing valve to the mostdistant fixture of two hundred (200) feet (60,960mm); and fixtures to be installed with flush valvesfor water closets and stall urinals as follows:

I f the pipe material and water supply are suchthat Chart A-5 applies, the required diameter of thebuilding supply is three and one-half (3-1/2) inches(88.9 mm) and the required diameter of the branch tothe hot-water heater is one and one-half (1-1/2)inches (40 mm).

The sizes of the various branches and risers maybe determined in the same manner as the size of thebuilding supply or the branch to the hot-watersystem, by estimating the demand for the riser orbranch from Chart A-2 or A-3 and applying the totaldemand estimate from the branch, riser, or sectionthereof to the appropriate flowchart.


3/102

RECOMMENDED RULES FORSIZING THE WATER SUPPLY SYSTEM Appendix A

Chart A-1Friction Losses for Disk-Type Water Meters

200 300 400 600 800 10000 30 40 5060 80100

II / / 1/0/ f :,1 _ ~ i V Y/1 j!I I I II I 'I I I I/ / I I I

II / / !/ / ~ // 1/ / 1/ / /!/ / / / / / 1/

1/ / / / 1/ 1/ // / / II145678910

20

16.5&10en 9...... 8III 7:9 6I 5

4o- I 3::lIII 2l-e.

Flow - Gallons per Minute

Chart A1 (Metric)Friction Losses for DiskType Water Meters

20.7

68.962.055.148.241.334.527.6

CDNOJ 10 C\I co 0 ('I')C\i ro et:i tri cOFlow- Liters per Second

II / / /1/ tI 100/ If, 1/ $ W 1f1R 'V ~ r & .{&II I I II I II I I I/ / I / /

/ / / / 1/ /II / / I 1/ / /1/ / / 1/ II II / /

1/ / / 1/ II / // '/ I/ / /IIIe..:I- I

::lIIIIIIGll-e. 13.8

137.8110.2

313


4/102

Appendix A 2007 CALIFORNIA PLUMBING CODETABLE A2

Water Supply Fixture Units (WSFU) and Minimum Fixture Branch Pipe Sizes3

0.75

5.06.03.0

1.0

3.53.58.07.0

10.0

Assembly6

8.01.51.53.02.02.04.05.02.04.02.52.55.05.58.0

2.03.0

4.01.01.50.52.51.01.01.0

4.010.0

Public

2.52.55.03.07.0

2.03.04.02.0

1.51.51.5

1.0

1.50.52.51.01.01.012.0

4.010.0

1.04.0

Private

mm152025Inch1/23/41 MinimumFixture BranchAppliances, Appurtenance, or Fixtures2 Pipe Size1,4Bathtub or Combination Bath/Shower (fill) 1/2"

3/4" Bathtub Fill Valve 3/4"Bidet 1/2"ClothesWasher 1/2"Dental Unit, cuspidor 1/2"Dishwasher, domestic ;. 1/2"Drinking Fountain or Watercooler 1/2"Hose Bibb 1/2"Hose Bibb, each additionaF 1/2"Lavatory 1/2"Lawn Sprinkler, each heads .Mobile Home, each (minimum) ..SinksBar 1/2"Clinic Faucet 1/2"Clinic Flushometer Valve ..with or without faucet 1"

Kitchen, domestic 1/2"Laundry 1/2"Service orMop Basin 1/2"Washup, each set of faucets 1/2"Shower 1/2"Urinal, 1.0 GPF 3/4"Urinal, greater than 1.0 GPF 3/4"Urinal, flush tank 1/2"Washfountain, circular spray 3/4"Water Closet, 1.6GPF Gravity Tank 1/2"Water Closet, 1.6 GPF FlushometerTank 1/2"Water Closet, 1.6 GPF Flushometer Valve 1"Water Closet, greater than 1.6 GPF Gravity Tank 1/2"Water Closet, greater than 1.6 GPF Flushometer Valve 1"Notes:

1. Size ofthe coldbranch outletpipe, or both the hotand cold branch outlet pipes.2. Appliances, Appurtenances, or Fixtures not included in this Table may be sizedby reference to fixtures having a similar flow rate

and frequency of use.3. The listed fixture unit values representtheirtotal load on the cold water service. The separate coldwater and hotwater fixture

unit value for fixtures havingboth cold and hot water connections may each be taken as three-quarters (3/4) of the listed totalvalue ofthe fixture.4. The listed minimum supply branchpipe sizes for individual fixtures are the nominal (1.D.) pipe size.5. For fixtures or supply connections likely to impose continuous flow demands, determine the required flow in gallons per minute(GPM) and add it separately to the demand (in GPM) for the distribution system or portions thereof.6. Assembly [Public Use (See Table 4-1)].7. Reduced fixture unit loading for additional hose bibbs as used is to be used onlywhen sizing total building demand and for pipesizing whenmore than one hose bibb is supplied by a segment ofwater distributing pipe. The fixture branch to each hose bibbshallbe sized on the basis of2.5 fixture units.

314


5/102

RECOMMENDED RULES FOR Appendix ASIZING THE WATER SUPPLY SYSTEMT AB LE A 3

Allowance in Equivalent Length of Pipe fo r F ric t io n L o ss in Valves an d Threaded Fittings*Equivalent Length of Pipe fo r Various Fittings

90 45 90 Coupling orDiameter Standard Standard Standard Straight Gate Globe Angleof Fitting Elbow Elbow Tee Run of Tee Valve Valve ValveInches Feet Feet Feet Feet Feet Feet Feet

3/8 1.0 0.6 1.5 0.3 0.2 8 41/2 2.0 1.2 3.0 0.6 0.4 15 83/4 2.5 1.5 4.0 0.8 0.5 20 12

1 3.0 1.8 5.0 0.9 0.6 25 151-1/4 4.0 2.4 6.0 1.2 0.8 35 181-1/2 5.0 3.0 7.0 1.5 1.0 45 22

2 7.0 4.0 10.0 2.0 1.3 55 282-1/2 8.0 5.0 12.0 2.5 1.6 65 34

3 10.0 6.0 15.0 3.0 2.0 80 404 14.0 8.0 21.0 4.0 2.7 125 555 17.0 10.0 25.0 5.0 3.3 140 706 20.0 12.0 30.0 6.0 4.0 165 80

TABLE A3 (Metric)Equivalent Length of Pipe fo r Various Fittings

90 45 90 Coupling orDiameter Standard Standard Standard Straight Gate Globe Angleof Fitting Elbow Elbow Tee Run of Tee Valve Valve Valvemm mm mm mm mm mm mm mm

10 305 183 457 91 61 2,438 1,21915 610 366 914 183 122 4,572 2,43820 762 457 1,219 244 152 6,096 3,65825 914 549 1,524 274 183 7,620 4,57232 1,219 732 1,829 366 244 10,668 5,48640 1,524 914 2,134 457 305 13,716 6,70650 2,134 1,219 3,048 610 396 16,764 8,53465 2,438 1,524 3,658 762 488 19,812 10,36380 3,048 1,829 4,572 914 610 24,384 12,192100 4,267 2,438 6,401 1,219 823 38,100 16,764125 5,182 3,048 7,620 1,524 1,006 42,672 21,336150 6,096 3,658 9,144 1,829 1,219 50,292 24,384

*Allowances are based on nonrecessed threaded fittings. Use one-half(l/2) the allowances for recessed threaded fittingsorstreamlined solder fittings.

315


6/102

Appendix A 2007 CALIFORNIA PLUMBING CODEA 7 Example

Fixture Units and Estimated Demands

Fixture UnitDemandCalculation

Branch to Hot Water SystemDemandin gallonsper minute(L per sec)No. ofFixtures

Building Supply DemandBuilding SupplyDemandNo. of Fixture Unit Total in gpmFixtures Demand Units (L per sec)Kind ofFixtures

Water Closets 130 8.0 1040Urinals 30 4.0 120Shower heads 12 2.0 24 12 12x2x3/4=18Lavatories 100 1.0 100 ..., 100 100 x 1 x 3/4=75Service Sinks 27 3.0 81 27 27 x 3 x 3/4=61Total 1,365,252 gpm (15.8 L/ s) 154 55 gpm (3.4 L/s)

Allowing for 15 ps i (103.4 kPa) at the highest fixture under the maximum demand of 252 gallons per minute(15.8 L/ sec.), the pressure available for friction loss is found by the following:55 - [15 + (45 x 0.43)] = 20.65 psi

Metric: 379 - [103.4 + (13.7 x 9.8)] = 142.3 kPaThe allowable friction loss per 100 feet (30.4 m) of pipe is therefore:

100 x 20.65 + 200 = 10.32 psiMetric: 30.4 x 142.3 + 60.8 = 71.1 kPa

316


7/102


8/102


9/102

RECOMMENDED RULES FORSIZING THE WATER SUPPLY SYSTEM

Chart A-4

Appendix A

Copper TubingSmooth Pipe - - - . /TypeM - - / 'Type L ---- ./K VvK -""f(\ /

/ \ y V \ ./. /eA'a ' v . // " \ \ ./ b \

./ \ Y V \Y /X/' "v 1\ V\ / \ v / ' \ V 1\ v

/ 'V\ K' V K V vf"1 y 1\ V /1 \K 1\ V ~ V\-""\/ 1\1)(./ [)(/ [X/

- . / ./ ' i i '" ./ KX X ./ ./ .-'\ / '\ / /' \ .>( \ \/ .... V-Vx \':'V / '\ \ V /\ ';% :::>(y V \ V \ V ~ f->1\

~ ) / ' r \ / 1': -- 1\1\ ~ IX >V - 1\ \\ 1':, -' .... /- .\:. \ >7:- / ' I. / :,.,.---./ - \ .... -/ \ ./ \ .\ / /V \ V:'/ ' \ .... :;>./ ' \ ;; / . \ ( v-- : ; / \ \ .... ~ .?iy \V ;;; ~ ;:;/\ : / ' \ \.... .... ~ ~ W --K- \ \ \ \ 1\~ -- /\1..-/ - I f\ ...../ 1\

10,000800060005000400030002000

1000800600500400 (I)....300 :::ll :

:E200 ...(I)Q .III

100 l :.280 iii60 CJ50 .54030 ==u::20

10865432

Friction Loss - Lbs. per Square-Inch Head per 100-Foot Length0.1 0.2 0.3 0.4 0.6 0.8 1 2 3 4 5 6 810 120 30 405060 80100

319


10/102

Appendix A

Chart A-4 (Metric)

2007 CALIFORNIA PLUMBING CODE

CopperTubingSmooth PipeType M - - - - "ypeL - - VTypeK - - - - V\ vV'\ / f\~ \K~ K i'Y-'V VV'/ 1/ V / 'A \ / '\ A Y 1 / \ ""v V /y 1 /

/ V 1\ V\ fX t.. \ '/-' 1\ v/ K fl(V V \ V ~ .)';/ \ V V \rx K 1\ v 1\' . 7 \V vVI\ / ' 1\ 1\ />- I);)( '0 '

t.\J,/, / / ' / ' -,y y 1 / IX / ' I . '\/ ' , . ) . ,.., p, \ p( \ \/ ,,/VX 1\' :;....- A \ v . / \ . ? ' ~ iX'V \V v \ \ , / \ ... A : / ' x"1\ v \ /K:/) V 1\ v 1 " \\ \1\ -:;./ \ ,,,., , ,

./ ' '/ , '/ (' / 1\ V V v

V /l V / - ' ( V \fP ,.../y \ Y \Pc:; VY I).(' l

/ 1 . ,....-,....- / ,....- v KA ), V /\ 1\ Y \ /V y 1\ v \ ' / '\ \/1\ /V L\ ,.../ \ V/l V \ l)(V1\ 1\p( V 1\ ,...../\V ~ / K: ~ / \ \V V P\ ",Ib, Lx-/ . /\ . / \IV/ \ ..v'\ \v \ \W ./ 1\,.../\ \ ' / 0>


14/102

Appendix A

Chart A-6 (Metric)


Fairly Rough \ . / / '\ . /\ , / /\Arl' \-V l-) / \ A1\ \ \ ~ ~ V v \ . / \' \\ \ / ' \ l \, / /'.,/K / ) /\ I--'

. / ' \ ' ,1/" \ . / \. / \ V /\ / ' /\ ./< X'\ ' \ ' ; / Y ........6V \ \ / ' ; ~ V ./ \..-:- \ ./\ / I 1\ . / \ , .,/ ?'/ / / 1\

, /VI V . / \ '\1.;: l\VV 1\ 1\\,/ x:; Is> \ < i ' ~"/ . / \ / '

. / / ' '


15/102

RECOMMENDED RULES FORSIZING THE WATER SUPPLY SYSTEM

,Chart A-7

Appendix A

Friction Loss - Lbs. per Square-Inch Head per 100 Foot Length

Rough \ A ' / 'V\ I\, . . / ( V\ 'I-\f'oC?\ / ' \,......-\ \ 1\ o K P\ K \' ,..,.- /"\ \ V\V"\ v1\ ....- \ '0 \"v.l.:: k / 'v 1\ ....-

Y"" / '\ .,. / '/ ' / '- / \/ v 1\ ).. \ :l( / ..xIY 1\ X ....-v \ ~ ~ 1\X \ v), vV \ / ' / ' / ' , \V/ 'l......\ / V s: \ \l\....- P< V\ A:- i\v /(/ ).. A \ V \1'1- .k\/ y \ ,.....,.- "\ \ V ,..,.-v )v V\ \v Y \ ,..,.-Kv [\ Iv 1\ \ \ v,..,.- V / ' \ ':x,.....,.. 1\ V ",I v 1\/ ' ....- ........ ....-/ ' \ ....- . . / '. / 1\ \/ ....- /\ \ \ \ ;.-v / ' \ V v\ \ "......,v \V V \ \/r\ 1\ \ \ l/ 'V \ \'v Vv V \ \'v 1\ . / 1\

0.1 0.2 0.3 0.4 0.6 0.8 1 2 3 4 56 810

1U,UUU800060005000400030002000

1000800600500400 Q)300 -. 200 :iE...Q)c-100 l/ l80 C.S!60 iii50 c:I40 .530 :::020 u::10865432

120 30 40 50 60 801,00

325


16/102

Appendix A 2007 CALIFORNIA PLUMBING CODE

Chart A-7 (Metric)

"CCof.)Gl(J )...GlC..S!::::i.5u:

2

654433

3

3o8259

2.6

26.0

3.00.47.81.55.28.9

30.004.078.015.052.089.0

6 - 5Rough /\ ....-. /\ 1\ X . / 2v \/ _1

1\ 1\ , K v \0 ....- 1\ P'\ P\1\ v f\/v \ r - \ 6v / ' 5

. / VV .A. / V 1\ j.. \ \'l: I>( / .x rr 2IY 1\ X . /V 1\ r:./ '>6


17/102

APPENDIX BEXPLANATORY NOTES ON COMBINATION WASTE AND VENT SYSTEMS

(See Section 910.0 of the UPC for specific limitations.)

B 1 Combination waste and vent systems, asoutlined in Section 910.0 of thi s code, cover thehorizontal wet venting of a series of traps by meansof a common waste and vent pipe. Pipe sizes at leasttwo (2) pipe sizes larger than those required for aconventional system are designed to maintain awetted perimeter or f low line low enough in thewaste pipe to al low adequate air movement in theupper portion, thus balancing the system. Sinks,lavatories, and other fixtures that rough in above thefloor, should not be permitted on a combinationwaste and vent system, which, at best, is merely anexpedient designed to be used in locations where itwould be structurally impractical to provide ventingin the conventional manner.Combination waste and vent systems areintended primarily for extensive floor or showerdrain installations where separate venting is notpractical, for floor sinks in markets, demonstration orwork tables in schoolbuildings, or for similarapplications where the fixtures are not adjacent towalls or partitions. Due to its oversize characteristics,such a waste sys tem is not sel f-scouring and,consequently, care should be exercised as to the typeof fixtures connected thereto and to the location ofcleanouts. In view of its grease-producing potential,restaurant kitchen equipment should not beconnected to a combinationwaste and vent system.B 2 Caution must be exe rc is ed to excludeappurtenances delivering large quantities or surgesof water (such as pumps, sand interceptors, etc.)from combination waste and vent systems in orderthat adequate venting will be maintained. Smallfixtures with a waste-producing potential of lessthan seven and one-half (7-1/2) gallons per minute(0.5 L/sec.) may be safely assigned a loading valueof one (1) unit. Long runs should be laid a t theminimum permissible slope in order to keeptailpieces as short as possible. Tailpieces should notexceed two (2) feet (610 mm) in length, which maynecessitate slopes up to forty-five (45) degrees (0.79rad) (see definition of horizontal pipe) on somebranches.B 3 It is essential that the pneumatics of such asystem be properly engineered, as the air pressurewithin the line must at all t imes balance that ofoutside atmosphere in order to prevent either trapseal loss or air locking between traps. Long mainssha ll be provided with addi tional relief ventslocated at intervals no t exceeding one hundred(100) feet (30,480 mm). Each such relief vent shouldequal at least one-half (1/2) of the ins ide crosssectional area of the drainpipe served.

B 4 Trap sizes are required to be equivalent tothe branches they serve (two (2) pipe sizes largerthan normal), and tailpieces between fixtures orfloor drains and such traps should be reduced tonormal size.B 5 Duplicate layout drawings of each suchproposed piping system must be presented to theAutho ri ty Hav ing Jur isdi ct ion and app rova lobtained before any installation is made.Complicated layouts should be checked byqualified personnel.B 5.1 Example of Sizing.A floor drain normally required two (2) inch (50mm) trap and waste. On a combination wasteand vent system, both trap and waste must beincreased two (2) pipe sizes (through 2-1/2" and3") (65 mm and 80 mID), which would make thetrap three (3) inch (76 mm). Pipe sizesrecognized for this purpose are 2 in., 2-1/2 in., 3 in.,3-1/2 in., 4 in., 4-1/2 in., 5 in., 6 in., etc. (50 mID,65 mm, 76 mID, 90 mm, 100 mm, 115.mm, 125mm, 150 mm, etc.). The tailpiece between thefloor drain and its trap should be two (2) inches(51 mm) (or normal size) to ensure that theamount of wastewater entering the t rap onlypartially fills the waste branch. A three (3) inch(76 mm) floor dra in would thus requi re a four(4) inch (100 mID) t rap, a four (4) inch (100 mID)floor drain, and five (5) inch (125 mm) trap, etc.,for the reasons previously stated.WHEN IN DOUBT, CHECK WITH YOURLOCALAuthority Having Jurisdiction.

327


18/102

328



19/102

APPENDIX DSIZING STORM WATER DRAINAGE SYSTEMS

TABLE D-1Maximum Rates of Rainfall for Various Cities

D 1 Roof Drainage.The rainfall rates in Table D-1 should be used fordesign unless higher values are established locally.D 2 Sizing by Flow Rate.Storm drainage systems can be sized by storm waterflow rates, using the appropriate GPM/square foot ofrainfal l l is ted in Table D-1 for the local area.Multiplying the listed GPM/square foot by the roofarea being drained by each inlet (in square feet)produces the gallons per minute (GPM) of requiredflow for sizing each drain inlet. The flow rates (GPM)can then be added to determine the flows in eachsection of the drainage system. Required pipe sizesfor various flow rates (GPM) are listed in Table 11-1and Table 11-2.D 3 Sizing by Roof Area.Storm drainage systems can be sized using the roofarea served by each section of the drainage system.

Maximum allowable roof areas with various rainfallrates are listed in Table 11-1 and Table 11-2, alongwith the required pipe sizes. Using this method, itmay be necessary to interpolate between two listedrainfall rate columns (inches per hour). To determinethe allowable roof area for a listed pipe size at alisted slope, divide the allowable square feet of rooffor a one (1) inch (25.4 mm/h) rainfall rate by thelisted rainfall rate for the local area. For example, theallowable roof area for a six (6) inch (152 mm) drainat one-eighth (1/8) inch (3.2 mm) slope with arainfall rate of 3.2 inches (81 mm/h) is 21,400/3.2 =6,688 square feet (621.3 m2 ) .

D 4 Capacity of Rectangular Scuppers.Table D-2 lists the discharge capacity of rectangularroof scuppers of various widths with various headsof water. The maximum allowable level of water onthe roof should be obtained from the structuralengineer, based on the design of the roof.

The rainfall rates in this table are based onU.S. Weather BureauTechnical Paper No. 40, Chart 14: 100-Year 60-Minute Rainfall (inches).

States and Cities Storm Drainage50-Minute Duration, 100-Year Return

ALABAMABirminghamHuntsvilleMobileMontgomeryALASKAAleutian IslandsAnchorageBethelFairbanksJuneauARIZONAFlagstaffPhoenixTucson

Inches/Hour

3.73.34.53.8

1.00.60.81.00.6

2.32.23.0

GPM/Square Foot

0.0380.0340.0470.039

0.0100.0060.0080.0100.006

0.0240.0230.031

329


20/102

Appendix D 2007 CALIFORNIA PLUMBING CODETABLE D-1 Continued

Storm DrainageStates and Cities GO-Minute Duration, 100-Year ReturnInches/Hour GPM/Square Foot

ARKANSASEudora . 3.8 0.039Ft. Smith 3.9 0.041Jonesboro 3.5 0.036Little Rock 3.7 0.038CALIFORNIAEureka 1.5 0.016Lake Tahoe 1.3 0.014LosAngeles 2.0 0.021LucerneValley 2.5 0.026Needles 1.5 0.016Palmdale 3.0 0.031Redding 1.5 0.016San Diego 1.5 0.016San Francisco 1.5 0.016SanLuis Obispo 1.5 0.016COLORADOCraig 1.5 0.016Denver 2.2 0.023Durango 1.8 0.019Stratton 3.0 0.031CONNECTICUTHartford 2.8 0.029New Haven 3.0 0.031DELAWAREDover 3.5 0.036Rehobeth Beach 3.6 0.037DISTRICT OFCOLUMBIAWashington 4.0 0.042FLORIDADaytona Beach 4.0 0.042Ft. Myers 4.0 0.042Jacksonville 4.3 0.045Melbourne 4.0 0.042Miami 4.5 0.047Palm Beach 5.0 0.052Tampa 4.2 0.044Tallahassee 4.1 0.043GEORGIAAtlanta 3.5 0.036Brunswick 4.0 0.042Macon 3.7 0.038Savannah 4.0 0.042Thomasville 4.0 0.042

330


21/102

SIZING STORM WATER DRAINAGE SYSTEMS Appendix DTABLE D-1 Continued

Storm DrainageStates and Cities 50-Minute Duration, 100-Year ReturnInches/Hour IGPMlSquare Foot

HAWAIIRainfall rates in the Hawaiian Islands vary from 1-1/2 inches /hour to 8inches/hour, depending on location and elevation. Consultlocal data.IDAHOBoise 1.0 0.010Idaho Falls 1.2 0.012Lewiston 1.0 0.010Twin Falls 1.1 0.011ILLINOISChicago 2.7 0.028Harrisburg 3.1 0.032Peoria 2.9 0.030Springfield 3.0 0.031INDIANAEvansville 3.0 0.031Indianapolis 2.8 0.029Richmond 2.7 0.028SouthBend 2.7 0.028IOWACouncil Bluffs 3.7 0.038Davenport 3.0 0.031Des Moines 3.4 0.035Sioux City 3.6 0.037KANSASGoodland 3.5 0.036Salina 3.8 0.039Topeka 3.8 0.039Wichita 3.9 0.041KENTUCKYBowlingGreen 2.9 0.030Lexington 2.9 0.030Louisville 2.8 0.029Paducah 3.0 0.031LOUISIANAMonroe 3.8 0.039New Orleans 4.5 0.047Shreveport 4.0 0.042MAINEBangor 2.2 0.023Kittery 2.4 0.025Millinocket 2.0 0021

331


22/102


Storm DrainageStates and Cities GO-Minute Duration, 100-Year ReturnIncheslHour GPMlSquare Foot

MARYLANDBaltimore 3.6 0.037Frostburg 2.9 0.030Ocean City 3.7 0.038MASSACHUSETTSAdams 2.6 0.027Boston 2.7 0.028Springfield 2.7 0.028MICHIGANDetroit 2.5 0.026Grand Rapids 2.6 0.027Kalamazoo 2.7 0.028Sheboygan 2.1 0.022Traverse City 2.2 0.023MINNESOTADuluth 2.6 0.027Grand Forks 2.5 0.026Minneapolis 3.0 0.031Worthington 3.4 0.035MISSISSIPPIBiloxi 4.5 0.047Columbus 3.5 0.036Jackson 3.8 0.039MISSOURIIndependence 3.7 0.038Jefferson City 3.4 0.035St. Louis 3.2 0.033Springfield 3.7 0.038MONTANABillings 1.8 0.019Glendive 2.5 0.026Great Falls 1.8 0.019Missoula 1.3 0.014NEBRASKAOmaha 3.6 0.037North Platte 3.5 0.036Scotts Bluff 2.8 0.029NEVADALasVegas 1.5 0.016Reno 1.2 0.012Winnemucca 1.0 0.010

332


23/102


Storm DrainageStates and Cities 50-Minute Duration, 100-Year ReturnInches/Hour GPM/Square Foot

NEW HAMPSHIREBerlin 2.2 0.023Manchester 2.5 0.026NEW JERSEYAtlantic City 3.4 0.035Paterson 3.0 0.031Trenton 3.2 0.033NEW MEXICOAlbuquerque 2.0 0.021Carlsbad 2.6 0.027Gallup 2.1 0.022NEW YORKBinghamton 2.4 0.025Buffalo 2.3 0.024New York City 3.1 0.032Schenectady 2.5 0.026Syracuse 2.4 0.025NORTH CAROLINAAsheville 3.2 0.033Charlotte 3.4 0.035Raleigh 4.0 0.042Wilmington 4.4 0.046NORTH DAKOTABismarck 2.7 0.028Fargo 2.9 0.030Minot 2.6 0.027OHIOCincinnati 2.8 0.029Cleveland 2.4 0.025Columbus 2.7 0.028Toledo 2.6 0.027Youngstown 2.4 0.025OKLAHOMABoise City 3.4 0.035Muskogee 4.0 0.042Oklahoma City 4.1 0.043OREGONMedford 1.3 0.014Ontario 1.0 0.010Portland 1.3 0.014

333


24/102


Storm DrainageStates and Cities 50-Minute Duration, 100-Year ReturnIncheslHour GPMlSquare Foot

PENNSYLVANIAErie 2.4 0.025Harrisburg 2.9 0.030Philadelphia 3.2 0.033Pittsburgh 2.5 0.026Scranton 2.8 0.029RHODE ISLANDNewport 3.0 0.031Providence 2.9 0.030SOUTH CAROLINACharleston 4.1 0.043Columbia 3.5 0.036Greenville 3.3 0.034SOUTH DAKOTALemmon 2.7 0.028Rapid City 2.7 0.028Sioux Falls 3.4 0.035TENNESSEEKnoxville 3.1 0.032Memphis 3.5 0.036Nashville 3.0 0.031TEXASCorpus Christi 4.6 0.048Dallas 4.2 0.044El Paso 2.0 0.021Houston 4.6 0.048Lubbock 3.3 0.034San Antonio 4.4 0.046UTAHBluff 2.0 0.021Cedar City 1.5 0.016Salt Lake City 1.3 0.014VERMONTBennington 2.5 0.026Burlington 2.3 0.024Rutland 2.4 0.025VIRGINIACharlottesville 3.4 0.035Norfolk 4.0 0.042Richmond 4.0 0.042Roanoke 3.3 0.034

334


25/102


- - -_ / Storm DrainageStates and Cities 50-Minute Duration, 100-Year ReturnInches/Hour GPM/Square Foot

WASHINGTONSeattle 1.0 0.010Spokane 1.0 0.010WallaWalla 1.0 0.010WEST VIRGINIACharleston 2.9 0.030Martinsburg 3.0 0.031Morgantown 2.7 0.028WISCONSINGreen Bay 2.5 0.026Lacrosse 2.9 0.030Milwaukee 2.7 0.028Wausau 2.5 0.026WYOMINGCasper 1.9 0.020Cheyenne 2.5 0.026Evanston 1.3 0.014Rock Springs 1.4 0.015

335


26/102

Appendix D 2007 CALIFORNIA PLUMBING CODETABLE 0-2Discharge from Rectangular Scuppers - Gallons per Minute

Water Head, Width of Scupper in InchesInches 6 12 18 24 30 361/2 6 13 19 25 32 381 17 35 53 71 89 107

1-1/2 31 64 97 130 163 1962 98 149 200 251 302

2-1/2 136 207 278 349 4203 177 271 364 458 551

3-1/2 339 457 575 6934 412 556 700 844

TABLE 0-2 (Metric)Discharge from Rectangular Scuppers - Liters per SecondWater Head Width of Scupper in Millimeters(mm) 152 305 457 610 762 914

13253851647689

102

0.41.12.0

0.82.24.06.28.6

11.2

1.23.36.19.413.1

17.121.426.0

1.64.58.2

12.617.523.028.835.1

2.05.6

10.315.822.028.936.344.2

2.46.8

12.419.126.534.843.753.3

Notes:1. Table D-2 is based on discharge over a rectangular weir with end contractions.2. Head is the depth of water above bottom of th e scupper opening.3. The height of the scupperopening should be at least two (2) times the design head.4. Coordinate the allowable head of water with the structural design of the roof.

336


27/102

APPENDIX EMANUFACTUREDIMOBILE HOME PARKS AND.RECREATIONAL VEHICLE PARKS

Part AManufactured/Mobile Home (M/H) ParkDefinitions and General RequirementsE 1 Manufactured/Mobile Home.A structure transportable in one (1) or moresections, which in the traveling mode is eight (8)body feet (2,438 mm) or more in width and forty(40) body feet (12,192 mm) or more in length or,when erected on site, is three hundred twenty (320)or more square feet (29.7 m2) , and which is built ona permanent chassis, and designed to be used as ad:-velling"Yith or without a permanent foundationwhen connected to th e required utilities. I tincludes the plumbing, heating, air conditioning,and electrical systems contained therein. Forfurther clarification of definition, see FederalRegulation 24 CFR.

;E 1.1 Manufactured/Mobile Home AccessoryBuilding or Structure. A building or structurethat is an addit ion to or suppl emen ts thefacilities provided to a M/H. I t is not a selfcontained, separate, habi table building orstructure. Examples are awnings, cabanas,ramadas, storage structures, carports, fences,windbreaks, or porches.

E 2 Manufactured/Mobile Home Lot. A portion ofa M/H park designed for the accommodation of oneM/H and its accessory buildings or structures for theexclusive use of the occupants.E 3 Manufactured/Mobile Home Park. A parcel(or contiguous parcels) of land that has been sodesignated and improved that it contains two (2) ormore M/H lots available to the general public for theplacement thereon ofM/H for occupancy.

GeneralE 4 The M/H park plumbing and drainage systemsshall be designed and installed in accordance withthe requirements of this appendix and therequirements of this code.E 5 Before anyplumbing or sewage disposal facilitiesare installed or altered in any M/H park, duplicateplans and specifications shall be filed and properpermits obtained from the departmentor departmentshaving jurisdiction. Plans shall show in detail:

(A) Plot plan of the park d rawn to scale,indicating elevations, property lines,

driveways, existing or proposed buildings,and the sizes ofM/H lots.(B) Complete specification and piping layout ofproposed plumbing systems or alteration.(C) Complete specification and layout ofproposed sewage disposal systemor alteration.(D) The nature and extent of the workproposed,

showing clear ly that such work willconform to the provisions of this code.Part B

Manufactured/Mobile Home Park DrainageSystem ConstructionE 6 Drainage Systems.A drainage system sha ll be provided in all M/Hparks for conveying and disposing o f all sewage.Wherever feasible, connection shall be made to apublic sys tem. All new improvements sha ll bedesigned, constructed, andmaintained in accordancewith applicable laws and regulations. Where thedrainage lines of the M/H park are no t connected toa public sewer, all proposed sewage disposal facilitiesshall be approved by the Authority HavingJurisdiction prior to construction.E 7 Material.Pipe and fittings installed underground in M/H parkdrainage systems shall be of material approved for thepurpose. M/H lot drainage inlets and extensions tograde shall be of material approved for undergroundusewithin a building.E 8 Drainage (Sewage) Lines.All drarnage (sewage) collection lines shall be locatedin trenches of sufficient depth to be free of breakagefrom traffic or other movements and shall beseparated from the park water supply system asspecified in this code. Drainage (sewage) lines shallhave a minimum size and s lope as specified inTables E-1 and E-2.E 9 M/H Lot Drainage Inlet and Lateral.

(A) Size. Each lo t shall be provided with adrainage inlet not less than three (3) inches(76 mm) in diameter.

(B) The lateral line from the inlet to the sewagedrain l ine shall s lope at least one-fourth(1/4) inch per foot (20.9 mm/m). All jointsshall be watertight.

337


28/102

Appendix E(C) All materials used for drainage connections

between a M/H and the lot drainage inletshall be semi-rigid, corrosion-resistant, nonabsorbent, and durable. The inner surfaceshall be smooth.(D) Provision shall be made for plugging or

capping t he sewage dra in inlet when aM/H does not occupy the lot . Surfacedrainage shall be diverted away from theinlet. The rim of the inlet shall extend notmore than four (4) inches (102 mm) aboveground elevation.

E 10 Location of Lot Drain Inlet.Each lo t drainage inlet shall be located in the rearthird section and within four (4) feet (1,219 mm) ofthe proposed location of theM/H.E 11 Pipe Size.

(A) Each M/H lot dra inage inlet shall beassigned a waste loading value of twelve(12) drainage fixture units, and each park

2007 CALIFORNIA PLUMBING CODEdrainage system shall be sized according toTable E-l o r as provided herein. Drainagelaterals shall be not less than three (3) inches(76 mm) in diameter.

(B) A park drainage system that exceeds thefixture unit loading of Table E-l or in whichthe grade and slope of drainage pipe doesnot meet the minimum specified in TableE-2 sha ll be des igned by a registeredprofessional engineer.

E 12 M/H Drain Connector.(A) An M/H sha ll be connected to the lo tdrainage inlet by means of a drain connectorconsisting of approved pipe not less than

Schedule 40, appropriate fittings andconnectors, and not less in size than theM/H dra inage out le t. An approvedcleanout shall be provided between theM/H and the lot drainage inlet. The fittingconnected to the lot drainage inlet shall be a

TABLE E-1Drainage Pipe Diameter and Number of Fixture Units on Drainage System

Size of Drainage Pipe Maximum NumberInches mm of Fixture Units

2* 51 83 76 354 102 2565 127 4286 152 7208 203 264010 254 468012 305 8200

*Except six unit fixturesTABLE E-2

Minimum Grade and Slope of Drainage PipeSlope per Slope per

Pipe Size 100 ft. (30.5 m) Pipe Size 100 ft. (30.5 m)Inches mm Inches mm Inches mm Inches mm2 51 25 635 6 152 8 2033 76 25 635 8 203 4 1024 102 15 381 10 254 3-1/2 895 127 11 279 12 305 3 76

338


29/102

MANUFACTURED/MH PARKS ANDRV PARKSdirectional fitting to discharge the flow intothe drainage inlet.

(8) A drain connector shall be ins ta lled ormaintained with a grade not less than onefourth (1/4) inch per foot (20.9 mm/m). Adrain connector shall b ~ g a s t i g h t and nolonger than necessary to make th econnection between theM/H outlet and thedrain inlet on the lot. A flexible connectormay be used at the lot drainage inlet areaonly. Each lot drainage inlet shall be cappedgastight when not in use.

PartCM/H Park Water Supply

E 13 General Requirements.An accessible and adequate supply of potable watershall be provided in eachM/H park. Where a publicsupply of water of satisfactory quantity, quality, andpressure is available at or within the boundary of thepark site, connection shall be made thereto and itssupply used exclusively: When a satisfactory publicwater supply is not available, a private water supplysystem shall be developed and used as approved bytheAuthority Having Jurisdiction.E 14 Lot Service Outlet Size.EachM/H lot shall be provided with a water serviceoutlet delivering potable water. The water serviceoutlet riser shall be not less than three-fourths (3/4)inch (19.1 mm) nominal pipe size and capable ofdelivering twelve (12) water supply fixture units.E 15 Location of Water Service.Each lot water service outlet shall be located in therear third section and within four (4) feet (1,219 mm)of the proposed location of theM/H.E 16 Pressure.EachM/H park water distribution system shall be sodesigned and maintained as to provide a pressure ofno t less than twenty (20) pounds per square inch(138 kPa) at each M/H lot a t maximum operatingconditions.E 17 Water Distribution Piping. .Park water distribution systems shall be designed todeliver a minimum of twelve (12) water supplyfixture units to each lot and installed with materialsas set forth in Chapter 6 and/or Appendix A of thiscode.E 18 Shutoff Valve.A separate water shutoff valve shall be installed ineach water service outlet at each M/H lot. Where alisted backflow protective device is installed, theservice shutoff shall be located on the supply side ofsuch device.

Appendix EE 19 8ackflow Preventer.Whenever a condition exists in the plumbing of aM/H that may create a cross-connection, a listedbackflow preventer shall be installed in the waterservice line to the M/H at or near the water serviceoutlet . When a hose bibb or outlet is installed on thesupply outlet riser in addition to th e serviceconnector, a l isted backflow preventer shall beinstalled on each additional outlet.E 20 Pressure-Relief Valve.Whenever it is required to install a backflowpreventer at the M/H lo t service outlet, a listedpressure-relief valve shall be installed in the waterservice line on the discharge side of th e backflowpreventer . P re ssure- re li ef valves sha ll be set torelease at a pressure not to exceed one hundred fifty(150) pounds per square inch (1,034 kPa). Pressurerelief valves shall discharge toward th e ground.Backflow preventers and pressure-relief valves shallbe at least twelve (12) inches (305 mm) above theground.E 21 Mechanical Protection.All park water service outlets, backflow preventers,and pressure-relief valves shall be protected fromdamage by vehicles or other causes. Such protectionmay consist of posts, fencing, or o ther permanentbarriers.E 22 M/H Water Connector.AnM/H shall be connected to the park water serviceoutlet by a flexible connector, such .as copper tubingor other approved material not less than threequarter (3/4) inch nominal (19.1 mm) interiordiameter.E 23 Water-Conditioning EqUipment.

(A) Permit Required. A permit sha ll beobtained from th e Authority HavingJurisdiction prior to installing any waterconditioning equipment on an M/H lot.Approval of the park operator is required onall applications for a permit to install suchequipment. I f the water-condit ioningequipment is of the regenerating type, andthe park drainage system discharges into apublic sewer, approval of the san i ta rydistrict or agency having jurisdiction overthe public sewer is required.

(8) Approval. Regenerating water-conditioningequipment shall be listed and labeled by anapproved listing agency.

(C) Installation. Regenerating uni ts s ha lldischarge the effluent of regeneration into atrap no t less than one and one-half (1-1/2)inches (38 mm) in diameter connected to the339


30/102

Appendix EM/H park drainage system. An approvedair gap shall be installed on the dischargeline a minimum of twelve (12) inches (305mm) above the ground.

E 24 Testing.Installations sha ll b e t es ted and inspected asrequired by Chapter 3 ofthis code.

Part DFuel Supply

E 25 General.All fuel gas piping systems serving manufacturedhomes, accessory buildings, or s tructures andcommunities shall be designed and constructed inaccordance with any applicable provisions of NFPA54, National Fuel Gas Code, and NFPA 58, LiquefiedPetroleum Gas Code. NFPA 31, Standard for theInstallation of Oil-Burning Equipment, shall apply tooil fuel-burning systems and shall conform to thecriteria ofthe AuthorityHaving Jurisdiction.

E 25.1 Gas Supply Connections.Gas supply connections at sites, where providedfrom an underground gas supply piping system,shall be located and a rr anged to permitattachment to a M/H occupying the site in awork-like manner. For the installation ofliquefied petroleum gas (LPG) storage systems,the applicable provisions of NFPA 58, LiquefiedPetroleum Gas Code, shall be followed.E 25.2 Location of Gas Supply Connection.The gas supply to the M/H sha ll be locatedwithin 4 feet (1.22 m) of the M/H stand. [NFPA501A: Sections 4.3, 4.3.8, 4.4, and 4.4.5.]

Exception: The above requirements shall notapply to gas supply connections fo rmanufactured homes located on all-weatherwood, concrete, or concrete blockfoundation sys tems or on foundat ionsconstructed in accordance with the localBuilding Code or, in the absence of a localcode, with a recognized model buildingcode. [NFPA 501ASection4.1.3]

E 26 Single and MUltiple Manufactured Home SiteFuel Supply Systems.E 26.1 Gas Piping Installations.

E 26.1 .1 Gas Supply Connections -Underground Gas Piping.Gas supply connections at sites, whereprovided from an underground gas supplypiping system, shallbe located and arrangedto permit attachment in a work-like manner

340

2007 CALIFORNIA PLUMBING CODEto a manufactured home occupying the site.For the installation of LPG storage systems,the provi sions o f NFPA 58, LiquefiedPetroleum Gas Code, shall be followed.E 26.1.2 Underground gas piping systeminstallations shall comply with an yapplicable Building Code and Sections E26.1.2.1 and E 26.1.2.2.E 26.1.2.1 Underground gas piping shallnot be installed beneath that portion of anM/H site reserved for the location of amanufac tu red home or M/H accessorybuilding or structure unless installed i n theopen-ended gas tight conduit of Section E26.1.2.2.E 26.1.2.2 The o p e n ~ e n d e d gastight conduitshall conform to the following:(1) The conduit shall be no t less thanSchedule 40 pipe that is approved for

underground ins ta ll at ion beneathbuildings.(2) The interior diameter of the conduitshall be no t less than 0.5 inches (12.7mm) larger than the outside diameter ofthe gas piping.(3) The conduit shall extend to a point notless than 4 inches (102 mm) beyond the

outside wall of the M/H, accessorybuilding, or structure, and the outerends shall not be sealed.

(4) Where the conduit terminates within aM/H, accessory building, or structure, itshall be readily accessible, and the spacebetween the conduit and the gas pipingshall be sealed to preventleakage of gasinto the building.

E 27 Manufactured Home Site Gas Shutoff Valve.Each M/H site shall have a listed gas shutoff valveinstalled upstream of the M/H site gas outlet. Thegas shutoff valve shall be located on the outlet riserat a height of not less than 6 inches (152 mm) abovegrade. A gas shutoff valve shall not be located underany M/H. The outlet shall be equippedwith a cap orplug to prevent discharge of gas whenever the M/Hsite outlet is not connected to an M/H.Exception: All gas shutoff valves for

manufactured homes located on foundationsconstructed in accordance with the local BuildingCode or, in the absence of a local code, with arecognizedmodel building c o d ~ . ,E 28 Gas Meters.

E 28.1 Support of Meters. Where installed, gas


31/102

MANUFACTURED/MH PARKS AND RV PARKS Appendix E

Note:In extreme climate areas, additional capacities shall beconsidered.

TABLE E-3Demand Factors for Use in Calculating GasPiping Systems in MIH Communities

standard engineering methods acceptable to theAuthority Having Jurisdiction.E 34.2 Where all connected appliances areoperated at their rated capacity, the supplypressure shall be not less than 4 ounces per squareinch [7 in. water column (1,743 Pa)]. The gassupply pressure shall not exceed 8 ounces persquare inch [14 in. water column (3,486 Pa)].

E 35 Gas Piping Materials.E 35.1 Metal. Metal gas pipe shall be standardweight wrought i ron or s teel (galvanized orblack), yellow brass containing not more than 75percent copper, or internally tinned or treatedcopper of iron pipe size. Galvanizing shall not beconsidered protectionagainst corrosion.Seamless copper or steel tubing shall bepermitted to be used with gases not corrosive tosuch material. Steel tubing shall comply withASTM A 539, Standard Specification for ElectricResistance-Welded Coiled Steel Tubing for Gas andFuel Oil Lines, or ASTM A 254, StandardSpecification for Copper-Brazed Steel Tubing.Copper tubing shall comply with ASTM 13 88,Specification for Seamless Copper Water Tubing(Type K or Type L), or ASTM B 280, Specificationfor Seamless Copper Tubing for Air Conditioningand Refrigeration Field Service. Copper tubing

meters shall be adequately supported by a postor bracket placed on a firm footing or othermeans providing equivalent support and shallnot depend on the gas outlet riser for support.E 28.2 Location of Meters. Each gas metershall be installed in an accessible location andshall be provided with unions or other fittings sothat the motor is removed easily and replaced inan upright position. Meters shall not be installedin unventilated or inaccessible locations or closerthan 3 ft (0.91 m) to sources of ignition.E 28.3 Meter Shutoff Valve or Cock. All gasmeter installations sha ll be provided withshutoff valves or cocks located adjacent to andon the inlet s ide of the meters. In thecase of asingle meter installation utilizing an LP-Gascontainer, the container service valve shall bepermitted to be used in lieu of the shutoff valveor cock. All gas meter installat ions shal l beprovided with. test tees located adjacent to andonthe outlet side of the meters.

E 29 Multiple Manufactured Home Site FuelDistribution and Supply Systems. [NFPA SOlA:Section 4.1,4.3.11, 4.4, and 4.4.5.]E 30 Manufactured Home Community Natural GasDistribution Systems.All underground metallic fuel piping systems shallcomply with the cathodic protection requirements of49 CFR 191 and 192. [NFPA501A: Section 4.3.1]E 31 Manufactured Home Community LPGSupply Systems.Where 10 or more customers are served by one LPGsupply system, the installationof the gas supply systemshallbe in accordancewith 49 CFR 192, Transportation ofNatural and Other Gas by Pipeline: Minimum FederalSafety Standards. Other liquefied petroleum gas supplysystems and the storage and handling of LPG shall bein accordance with NFPA 58, Liquefied Petroleum GasCode. [NFPA SOIA: Section 4.3.8]E 32 Installation of Cathodic Protection Systems.Where required by the federal standard cited inNFPA SOIA Section 2.3.1, cathodic protection shallbe installed fo r corrosion control of buried orsubmerged metallic gas piping. [NEPA SOlA: Section4.3.6.1 and 4.3.6.2]E 33 Required Gas Supply.The minimum hourly volume of gas required at eachM/H site outlet or any section of the M/Hcommunity gas piping system shall be calculated asshown in Table E 3.E 34 Gas Pipe Sizing and Pressure.

E 34.1 The size of each section of a gas pipingsystem shall be determined in accordance withNFPA 54, National Fuel Gas Code, or by other

No. ofManufacturedHomeSites1234567891011-2021-30

31-4041-60Over 60

Btulh perManufacturedHome Site125,000117,000104,00096,00092,00087,00083,00081,00079,00077,00066,00062,00058,00055,00050,000

341


32/102

Appendix E(unless tin-lined) shall not be used if t he gascontains more than an average of 0.3 grains ofhydrogen sulfide per 100 standard feeP of gas.E 35.2 Protection Coatings for Metal GasPiping. All buried or submerged metallic gaspiping shall be protected from corrosion byapproved coatings or wrapping materials. All gaspipe protective coatings shall be approved types,shall be machine applied, and shall conform torecognized standards. Field wrapping shallprovide equivalent protection and is restricted tothose short sections and fittings that arenecessarily stripped for threading or welding.Risers shall be coated or wrapped to a point atleast 6 inches (152 mm) above ground.E 35.3 Plastic. Plastic piping shall be usedunderground only and shall meet therequirements ofASTMD 2513, Thermoplastic GasPressure Pipe, Tubing, and Fittings, or ASTM D2517, Reinforced Epoxy Resin Gas Pressure Pipeand Fittings, as well as the design pressure anddesign limitations of 49 CFR 192.123, and shallotherwise conform to the installationrequirements thereof.

E 36 Gas Piping Installations.E 36.1 Minimum Burial Below Ground Leveland Clearances.All gas piping installed below ground level shallhave a minimum earth cover of 18 inches (451mm) and shall be installed with at least 12 inches(305 mm) of clearance in any direction from anyother underground utility system.E 36.2 Metallic Gas Piping.

E 36.2.1 All metallic gas piping systemsshall be installed in accordance withapprove d plans and specifications,including provisions for cathodic protection.Each cathodic protection system shall bedesigned and installed to conform to theprovisions of 49 CFR 192.E 36.2.2 Where the cathodic protectionsys tem is designed to protec t only the gaspiping system, the gas piping system shallbe electrically isolated from al l otherunderground metallic systems orinstallations. Where only the gas pipingsystem is cathodically protected againstcorrosion, a dielectric fitting shall be used inthe M/H gas connection to insulate theM/H from the underground gas pipingsystem.E 36.2.3 Where a cathodic protection systemis designed to provide all undergroundmetallic systems and installations with342

2007 CALIFORNIA PLUMBING CODEprotection against corrosion, all such systemsand installations shall be electrically bondedtogether and protected as a whole.

E 36.3 Plastic Gas Piping. Plastic gas pipingshall only be used underground and shall beinstalled with an electrically conductive wire forlocating the pipe. The wire used to locate theplastic pipe shall be copper, not smaller in sizethan No. 18 AWG, with insulation approved fordirect burial. Every portion of a plastic gaspiping system consisting of metallic pipe shallbe cathodically protected against corrosion.E 36.4 Gas Piping System Shutoff Valve. Areadily accessible and identifiable shutoff valvecontrol ling the flow of gas to the enti re M/Hcommunity gas piping system shall be installednear the point of connection to the service pipingor to the supply connection of an LPG container.

E 37 Liquefied Petroleum Gas Equipment.LPG equipment shall be installed in accordancewith the app licable provisions of NFPA 58,Liquefied Petroleum Gas Code.E 38 O il Supply.The following three methods of supplying oil to anindividual M/H site shall be permitted:

(1) Supply from an outside underground tank (seeSection 2.4.6)(2) Supply from a centralized oil distributionsystem designed and installed in accordance

with accepted engineering practices and incompliance with NFPA 31,Standard for theInstallation ofOil-Burning Equipment(3) Supply from an outside aboveground tank (seeSection 2.4.6)

E 38.1 Minimum Oil Supply Tank Size. Oilsupply tanks shall have a minimum capacityequal to 20 percent of the average annual oilconsumption.E 38.2 Oil Supply Connections - General. Oilsupply connections at M/H s tands, whereprovided from a centralized oil distributionsystem, shall be located and arranged to permitattachment in a work-like manner to amanufactured home utilizing the s tand. Theinstallation of such facilities shall meet theprovi sions of NFPA 31, Standard for theInstallation of Oil-Burning Equipment, andparticularly Section 3.8 thereof.

E 39 Fuel Supply Systems Installation.E 39.1 Flexible Gas Connector. Each gassupply connector shall be listed for outside M/Huse, shall be no t more than 6 ft (1.83 m) inlength, and shall have a capacity rating adequate


33/102

MANUFACTURED/MH PARKS AND RV PARKSto supply the connected load.

Exception: All gas supply connections formanufactured homes located on an allweather wood, concrete, or concrete blockfoundation system or on a foundationconstructed in accordance with the localBuilding Code or, in the absence of a localcode, with a recognized model buildingcode.

E 39.2 Use of Approve d Pipe and Fittings ofExtension. Where it is necessary to extend theM/H inlet to permit connec tion of the 6 foot(1.83 m) listed connector to the site gas outlet,the extension shall be of approved materials ofthe same s ize as the M/H inlet and shall beadequately supported at no more than 4 foot(1.22 m) intervals to the M/H.E 39.3 Mechanical Protection. All gas outletrisers, regulators, meters, valves, or otherexposed equipment shall be protected against.accidental damage.E 39.4 Special Rules on AtmosphericallyControlled Regulators. Atmosphericallycontrolled regulators shall be installed in such amanner that moisture cannot enter the regulatorvent and accumulate above the diaphragm.Where the regulator vent is obstructed due tosnow and icing conditions, shields, hoods, orother suitable devices shall be provided to guardagainst closing of the vent opening.E 39.5 Fuel Gas Piping Test. The M/H fuelgas piping system shall be testedonly with airbefore it is connected to the gas supply. TheM/H gas piping system shall be subjected to apressure test with all appliance shutoff valves intheir closedpositions.

E 39.5.1 The fue l gas piping t es t shallconsist of air pressure at not less than 10inch water column or more than 14 inchwater column [6 oz./in.2 to 8 oz. /in.2 (2,490Pa to 3,486 Pa)]. The system shall be isolatedfrom the ai r pressure source and sha llmaintain this pressure for 10 minutes ormore without perceptible leakage. Uponsat is factory complet ion of the test, theappliance valves shall be opened, and thegas appliance connectors sha ll be testedwith soapy water or bubble solution whileunder the pressure remaining in the pipingsystem. Solutions used fo r testing forleakage shall not contain corrosivechemicals. Pressure shall.be.measured witheither a manometer, slope gauge, or gaugethat is calibrated in either water inch or psi,with increments of either 1/10 inch (2.5 mm)

Appendix Eor 1/10 psi (0.6 kPa gauge), as applicable.Upon satisfactory completion of the test, theM/H gas supply connector shall beinstalled, and the connections shall be testedwith soapy water or bubble solution. .

WARNINGDo not overpressurize the fuel gas piping system.Damage to valves, regulators, and appliances canoccur due to pressurization beyond the maximumsspecified. .

E 39.5.2 Gas appliance vents shall bevisually inspected to ensure that they havenot been d is lodged in t rans it and ar econnected securely to the appliance.

E 39.6 Oil Tanks.No more than one 660 gallon (2,500 L) tank ortwo tanks with aggregate capacity of 660 gallon(2,500 L) or less shall be connected to one oilburning appliance. Two supply tanks, whereused, shall be cross-connected and providedwith a single fill and single vent as described inNFPA 31, Standard for the Installation of Oil-Burning Equipment, and shall be on a commonslab and rigidly secured one to the other, Tankshaving a capacity of 660 gallon (2,500 L), or lessshall be securely supported by rigid,noncombustible supports to prevent settling,sliding, or lifting.

E 39.6.1 Oil supply tanks shall be installedin accordance with the applicable provisionsof NFPA 31, Standard for the Installation ofOil-Burning Equipment.E 39.6.2 A tank with a capacity no largerthan 60 gallon (230 L) shall be permitted tobe a DOT-5 shipping container (drum) andso marked, or a tank meeting the provisionsof UL 80, Steel Inside Tank for Oil Burner Fuel..Tanks other than DOT-5 shipping containershaving a capacity of no t more than 660gallon (2,500 L) shall meet the provisions ofUL 80. Pressure tanks sha ll be bui lt i naccordance with Section VIII, PressureVessels, ASME Boiler, and Pressure VesselCode.E 39.6.3 Tanks, as described in Sections2.4.6 and 2.4.6.2, that are adjacent tobuildings shallbe located no t less than 10feet (3.05 m) from a property line that ispermitted to be built upon.E 39.6.4 Tanks with a capacity no largerthan 660 gallon (2,500 L) shall be equippedwith an open vent no smaller than 1.5-inch(38 mm) iron pipe size; tanks with a 500

343


34/102

Appendix Egallon (1900 L) or less capacity shall have avent of 1.25-inch (32 mm) iron pipe size.E 39.6.5 Tanks shall be provided with ameans of determining the liquid level.E 39.6.6 The fill opening shall be a size andin a location that permits ready fillingwithout spillage.E 40 Manufactured Home Accessory BUildingFuel Supply Systems.

Fuel gas supply systems instal led in a M/Haccessory building or structure shall comply with theapplicable provisions of NFPA 54, National Fuel GasCode, and NFPA 58, Liquefied Petroleum Gas Code. Fueloil supply systems shall comply with the applicableprovisions of NFPA 31, Standard for the Installation ofO i l ~ B u r n i n g Equipment.E 41 Community BUilding Fuel Supply Systemsin Manufactured Home Communities.

E 41.1 Fuel Gas Piping and EquipmentInstallations.Fuel gas piping and equipment installed withina permanentbuilding in a M/H community shallcomply with nationally recognized applianceand fuel gas piping codes and standards adoptedby the Authority Having Jurisdiction. Where thes ta te o r o ther political subdivision does no tassume jurisdiction, such fuel gas piping andequipment installations shall be des igned andinstalled in accordance with the appropria teprovisions of NFPA 54, National Fuel Gas Code, orNFPA 58, Liquefied Petroleum Gas Code.E 41.2 Oil Supp ly Systems in M/HCommunities.Oil-burning equipment and installation within aM /H community shall be designed andconstructed in accordance with the applicablecodes and standards adopted by the AuthorityHaving Jurisdiction. Where the s ta te or o therpol it ical subdiv is ion does not assumejurisdiction, such installation shall be designedand con st ru ct ed i n accordance with theapplicable provisions of NFPA 31, Standard forthe Installation ofOil-Burning Equipment.E 41.3 Oil -Burning Equipment andInstallation.Oil-burning equipment and installation within abuilding constructed in a M/H community inaccordance with the local Building Code or anationally recognized building code sha llcomplYwith -nationally recognized codes ands tandards adopted by the Authority HaVingJurisdiction. Where the state or other politicalsubdivision does no t assume jurisdiction, suchoil-burning equipment and installation shall be

344

2007 CALIFORNIA PLUMBING CODEdesigned and installed in accordance with theappropriate provisions of NFPA 31, Standard forthe Installation ofOil-Burning Equipment.E 41.4 Inspections and Tests.Inspections and tests for fuel gas piping shall bemade in accordance with Chapters 1 and 12 ofthis Code.

Part ERecreational Vehicle Parks Definitions andGeneral' Requirements

E 42 Recreational Vehicle (RV).A vehicular-type uni t pr imari ly designed astemporary living quarters for recreational, camping,travel, or seasonal use, that either has its own motivepower, or is mounted on or towed by anothervehicle. The basic entities are camping trailer, fifthwheel trailer, motor home, park trailer, travel trailer,and truck camper.E 43 Recreational Vehicle Park.A plot of land upon which two (2) or morerecreational vehicle sites are located, established, ormaintained for occupancy by recreational vehicles ofthe general public as temporary living quarters forrecreation or vacation purpose.E 44 Recreational Vehicle Site.Within a recreational vehicle park, a plot of groundintended for the accommodation of a recreationalvehicle, a tent, or other individual camping unit on atemporary basis.E 45 General.All plumbing shall be installed in accordance withth e plumbing codes of th e Authority HavingJurisdiction and with this appendiX.

Part FRecreational Vehicle Park Toilet and ShowerFacilities

E 46 Toilets and urinals shall be provided at one (1)or more locations in every recreational vehicle park.They shall be convenient of access and sha ll belocated within a five hundred (500) foot (152.4 m)radius from any recreational vehic le s ite notprovided with an individual sewer connection.E 47 Facilities for males and females shall beappropriately marked.E 48 A minimum of one (1) toilet.shall be providedfor each sex up to the first twenty-five (25) sites. Foreach additional twenty-five (25) 'sites not providedwith sewer connections, an additional toilet shall beprovided. .


35/102

MANUFACTURED/MH PARKS AND RV PARKS Appendix EE 49 The interior finish of walls shall be moistureresistant to a height of four (4) feet (1,219 mm) tofacilitate washing and cleaning.E 50 The floors shall be constructed of materialimpervious to water and shall be easily cleanable.Any building having water-flush toi le ts shall beprovided with a floor drain in the toilet room. Thisdrain shall be provided with means to protect thetrap seal as required by this code.E 51 I f water-flush toilets are provided, an equalnumber of lavatories shall be provided' for up to six(6) toilets. One additional lavatory shall be providedfor each two (2) toilets when more than six (6) toiletsare required. Each lavatory basin shall have a pipedsupply of potable water and shall drain i nto thedrainage,system.E 52 If separate facilities are provided formen andwomen, urihals shall be acceptable for no more thano n ~ - t h i r d (1/3) of the toilets required in the men'sfacilities, except that one (1) urinal may be used toreplace a toilet in a minimurh park.'Only iridividua1stall Or wall-hung types of urinals shall be installed.Floor-type trough units shall be prohibited.E 53 Toilets shall be of an approved, elongated bowltype and shallbe providedwith seatswith open fronts.E 54 Each toilet shall be in a separate compartmentand be provided with a doorwith a latch for privacyand a holder or dispenser for toilet paper. Dividingwalls or partitions shall be at least five (5) feet (1,524mm) high and shall be separated from the floor by aspace not greater than twelve (12) inches (305 mm).E 55 Toilet compartments shall be no t less thanthirty (30) inches (762 mm) in width (no toilet shallbeset 'closer than fifteen (15) inches (381mm) fromits center to a s ide wall) and there shall be not lessthan thirty (30) inches (762 mm) of clear space infront of each toilet.E 56 Each toilet room for w o m ~ n shall be providedwith a receptacle for sanitary napkins. The receptaclesha ll be of durable , impe rv ious , and readilycleanable material, and shall be provided with a lid.E 57 Each shower, i f provided, shall have a floorarea of thirty-six (36) inches by thirty-six (36) inches(914 mm x 914 mm) and sheill be capable ofencompassing a thirty (30) inch (762 mm) diametercircle and shall be of the individual type, and eachshower area shall be visually screened from view,with a minimum floor a rea of thirty-six (36) byt h i r t y ~ s i ~ ( ~ 6 ) inches (914 mm x 914 mm) per shower.Each shi:tllbe provided with individual dressingareas screened f rom view ,and shall contain aminimum of one (1) clothing hook and stool (o,requivalentbench area).

E 58 ,Each shower a rea sha ll be des igned tominimize the flow of water into the dressing areaand shall be connected to the drainage system bymeans of a properly vented and trapped inlet. Eachsuch area sl).all have an impervious, sk,id-resistantsurface; wooden racks (duck boards) over showerfloors shall be prohibited.E 59 Every toilet building shall have a minimumceiling height of seven (7) feet (2,134 mm) and,unless artificial light is provided, a window orskylight area equal to at least ten (10) percent of thefloor area shall be provided.

All doors to the exterior shall open outward,be self-closing,' and shall be visually screened bymeans of a vestibule or wall to prevent direct viewof the inter ior when the exterior doors are open.Such ,screening shall n o be required on singletoilet units.E 60 Every toilet room shall have permanent, nonclosable, screenedopening(s), having a total area no tless than five (5) percent of th e floor a rea andopening directly to the exterior in order to provideproper ventilation. Listed exhaust fanes), vented tothe exte,rior, t he rat ing of which in cubic feet perminute is at least twenty-five (25) percent of the totalvolume of the room(s) served, shall be considered asmeeting the requirements of this subsection. Allopenable windows and vents to the outside shall beprovided with fly-proof screens of not less thannumber sixteen (16) mesh.

Part GRecreational Vehicle Park Potable Water Supplyand DistributionE 61 Quality.The supplyOr supplies of water shall comply withthe appropriate potable water standards ofthe stateor local health authority or, in the absence thereof,with the Drinking W a t ~ r Standard of the' FederalEnvironmental'Protection Agency. (See'42 CFR Part72, subpart J.) ,E 62 Sources.Only water approved by a regulating agency shall beacceptable. Where an: approved public water supplysystem is available, it shall be used. Where the parkhas its own water supply system, the components ofth e system shall be approved. A water supplysystem that is used on a seasonal basis shall beprovidedwith means for draining.E 63 Prohibited Connections.The potable 'water supply,shall not be connected toany nonpotable or unapproved water supply, ,nor besubjected to any backflow or back-siphonage.

345


36/102

Appendix E 2007 CALIFORNIA PLUMBING CODE

E 74 The sewer l ines shall be located to preventdamage from vehicular traffic.E 75 Cleanouts shall be provided per Chapter 7 ofthis code.

this code. This connection shall be equipped with alisted anti-siphon backflow prevention device.E 70 Drinking Fountains.I f provided, dr inking fountains sha ll be inconformancewith the requirements ofthis code.

Part IRecreational Vehicle Park Drainage SystemE 71 An adequate and approved drainage systemshall be provided in all RV parks for conveying anddisposing of all sewage. Where available, parks shallbe connected to a public sewer system.E 72 Material.Pipe and fittings installed in the drainage systemshall be of material listed, approved, and installedper this code.E 73 The minimum diameters of drainage laterals,branches, and mains serving RV sites shall be inaccordance with the following table:

Minimum Pipe SizesInches (ID) Nominal (mm)

3 764 1025 1276 1528 203

53671120440

Table E-4Maximum Number ofRecreational VehicleStands Served

E 64 Supply.The water supply system shall be designed andconstructed in accordance with the following:

(A) A minimum of twenty-five (25) gallons (94.6L) per day per site fo r sites withoutindividual water connections.(B) A minimum of fifty (50) gallons (189.3 L) perday per site for sites with individual waterconnections.(C) A minimum of fifty (50) gallons (189.3 L) per

day per site i f water-flush t oi le ts a reprovided in rest rooms.E 65 Pressure and Volume.Where water is distributed under pressure to anyindividual site, the water supply sys tem shall bedesigned to provide a minimum flow pressure oftwenty (20) pounds per square inch (137.8 kPa) witha minimum flow oftwo (2) gallons (7.6 L) perminuteat any outlet. The maximum pressure shall no texceed eighty (80) pounds per square inch (551 kPa).E 66 Outlets.Water out le ts sha ll be convenient to access and,when not piped to individual RV sites, shall not belocated farther than three hundred (300) feet (91.4 m)from any site. Provisions shall be made to preventaccumulation of standing water or the creation ofmuddy conditions at each water outlet.E 67 Storage Tanks.Water storage tank s sha ll be const ructed ofimpervious materials, protected against contamination, and provided with locked, watertight covers.Any overflow or ventilation openings shall be downfacing and p rovid ed w ith corrosion-resistantscreening of not less than number twenty-four (24)mesh to prevent the entrance of insects and vermin.Water storage tanks shall not have direct connectionsto sewers.

Part HRecreational Vehicle Park Water Connections

for Individual Recreational VehiclesE 68 When provided, the water connections forpotable water to individual recreational vehicle sitesshall be located on the left rear half of the site (left sideof RV) within four (4) feet (1,219 mm) ofthe stand.E 69 Each potable water connection shall consist ofa water riser pipe that shall be equipped with athreaded male spigot located at least twelve (12)inches (305 mm) bu t not more than twenty-four (24)inches (610 mm) above grade level fo r theattachment of a standard water hose. The water riserpipe shall be protected from physical damage per346

PartJRecreational Vehicle Site Drainage System InletE 76 When provided, the site drainage system inletconnections for individual RVs shall be located so as toprevent damage by the parking ofRVs or automobilesand shall consist of a sewer riser extending verticallyto grade. The minimum diameter of the sewer riserpipe shall be three (3) inches (76 mm), and it shall beprovided with a four (4) inch (102 mm) inlet or aminimum three (3) inch (76 mm) female fitting.E n When provided, the sewer inlet to individual RVsites shallbe located on the leftrearhalf of the site (left sideofthe RV) within four (4) feet (1,219mm)ofthe stand.E 78 The sewer riser pipe shall be firmly imbedded


37/102

MANUFACTURED/MH PARKS AND RV PARKSin the ground and protected against damage frommovement. It shall be provided with a tight-fittingplug or cap, which shall be secured by a durablechain (or equivalent) to prevent loss.

Part KRecreational Vehicle Park Sanitary DisposalStations

E 79 One (1) RV sanitary disposal station shall beprovided for each one hundred (100) RV sites, orpart thereof, which are not equipped with individualdrainage system connections.E 80 Each station shall be level and convenient ofaccess from the service road and shall provide easyingress and egress for recreational vehicles.E 81 Construction.Unless other approved means are used, each stationshall have a concrete slab with the drainage systeminlet located so as to be on the road (left) side of therecreational vehicle. The slab shall be no t less thanthree (3) feet by three (3) feet (914 mm x 914 mm), atleast three and one-half (3-1/2) inches (89 mm) thickand properly reinforced. The slab surface is to betroweled to a smooth finish and sloped from eachside inward to a drainage system inlet.

The drainage system inlet shall consist of a four(4) inch (102 mm) self-closing, foot-operated hatch ofapproved material with the cover milled to fit tight.The hatch body shall be set in the concrete of the slabwith the lip of the opening flush with its surface tofacilitate the cleansing of the slab with water. Thehatch shall be properly connected to a drainagesystem inlet, which shall discharge to an approvedsanitary sewage disposal facility.E 82 Where the recreational vehicle park isprovided with a piped water supply system, meansfor flushing the recreational vehicle holding tank andthe sanitary disposal station slab shall be providedand shall consist of a p iped supply of water underpressure, terminating in an out le t located andinstalled so as to prevent damage by automobiles orrecreational vehicles. The flushing device shallconsist of a properly supported riser terminating atleast two (2) feet (610 mm) above the ground surface,with a three-fourth (3/4) inch (19.1 mm) valvedoutlet adaptable for a flexible hose.

The water supply to the flushing device shall beprotected f rom backf low by means of a listedvacuum breaker or backflow prevention devicelocated downstream from the last shutoff valve.

Adjacent to the flushing arrangement shall beposted a sign of durable material no t less than two(2) feet by two (2) feet (610 mm x 610 mm) in size.

Appendix EInscribed thereon in clearly legible letters shall be thefollowing:DANGER - NOT TO BE USED FOR DRINKING ORDOMESTIC PURPOSES.

Part LRecreational Vehicle Park Water Supply StationsE 83 A potable watering station, i f provided forfilling recreational vehicle potable water tanks, shallbe located at least fifty (50) feet (15,240 mm) from asanitary disposal station. When such is provided,adjacent to the potable water outlet shall be posted asign of durable material not less than two (2) feet bytwo (2) feet (610 mm by 610 mm) in size. Inscribedthereon in clear legible letters on a contrastingbackground shall be: POTABLE WATER. NOT TOBE USED FOR FLUSHING WASTE TANKS. Thepotable water shall be protected from backflow bymeans of a listed vacuum breaker locateddownstream from the last shutoff valve.

Part MRecreational Vehicle Park Fuel Gas Equipmentand Installations

E 84 All fuel gas equipment and installations shallcomply with Part D of thi s appendix, except asotherwise permitted or required by this code.

347


38/102

Appendix E

348



39/102

APPENDIX FFIREFIGHTER BREATHING AIR REPLENISHMENT SYSTEMS

F 1 Scope.This chapter covers minimum requirements forinstallation of firefighter breathing air replenishmentsystems.F 2 Definit ions.For purposes of this chapter, the fol lowingdefinitions shall apply:High-Rise Building. Buildings greater than 75 feetin height where the building height is measuredfrom the lowest level of fire department vehicleaccess to the floor of the highest occupiable story.[NFPA 5000 3.3.58.9]Interior Cylinder Fill Panels. Lockable interiorpanels that provide firefighters the ability to regulatebreathing air pressure and refill SCBA cylinders.Interior Cylinder Fill Stations and Enclosures. Freestanding fill containment stations that providefirefighters the ability to regulate breathing ai rpressure and refill SCBA cylinders.Self-Contained Breathing Apparatus (SCBA). Anatmosphere-supplying respirator that supplies arespirable ai r a tmosphere t o the user from abreathing source that is independent of the ambientenvironment and designed to be carried by the user.[NFPA 1981 3.3.41]F 3 System Components.Firefighter breathing air replenishment systems shallcontain, as a minimum, the"following components.(A) Exterior Fire DepartmentConnection Panel(B) Interior Fire Department Air Fill Panel or

Station(C) Interconnected PipingDistribution System(D) Pressure Monitoring SwitchF 4 Required Installations.A firefighter air system shall be installed in thefollowing buildings:F 4.1 High-rise buildings.F 4.2 Underground structures that are three or more

floors below grade with an area greater than 20,000square feet.F 4.3 Large area structures with an area greater than200,000 square feet andwhere the travel distance fromthe building,centerline to the closest exit is greaterthan 500 feet, such as warehouses, manufacturingcomplexes, malls, or convention centers.F 4.4 Underground transportation or pedestriantunnels exceeding 500 feet in length.F 5 Exterior Fire Department Connection Paneland Enclosure.F 5.1 Purpose. The exterior fire departmentconnection panel shall provide the fire department'smobile air operator access to the system and shall becompatible with the fire department's mobile airunit.F 5.2 Number of Panels. Each building or structureshall have aminimum of two panels.F 5.3 Locat ion. Each panel shall be attached to thebuilding or on a remote monument at the exterior ofthe building with a minimum of six (6) foot radiusand 180-degree clear unobstructed access to the frontof the panel. The panel shall be weather-resistant orsecured inside of a weather-resistant enclosure. Thepanel sha ll be located on opposite sides of thebuilding within 50 feet of an approved roadway ordriveway, or other locations approved by th eAuthority Having Jurisdiction.F 5.4 Construction. The fire department connectionpanel shall be installed in a metal cabinet constructedof minimum 18-gauge carbon steel or equivalent. Thecabinet shall be provided with a coating or othermeans to protect the cabinet from corrosion.F 5.5 Vehicle Protection.Where the panel is locatedin an area subject to vehicle traffic, impact protectionshall be provided.F 5.6 Enclosure Marking. The front of the enclosureshall be marked "FIREFIGHTER AIR SYSTEM". Thelettering shall be in a color that contrasts with theenclosure front and in letters that are a minimum of 2incheshighwith 3/8-inchbrush stroke.F 5.7 Enclosure Components. The exterior firedepartment connection panel shall contain all of thenecessary gauges, isolation valves, pressure-reliefvalves, pressure-regulating valves, check valves,tubing, fittings, supports, connectors, adapters, andother necessary components as may be required to

349


40/102

Appendix Fallow the fire department's mobile air unit to connectand augment the system with a constant source ofbreathing air. Each fire department connection panelshall contain at least two inlet air connections.F 5.8 Pressure-Relief Valve. Pressure-relief valvesshall be installed downstream of the pressureregulator inlet. The rel ie f valve sha ll meet therequirements of the CGA S-1.3 and shall not be fieldadjustable. The relief valve shall have a set-to-openpressure not exceeding 1.1 times the design pressureof the system. Pressure-relief valve discharge shallterminate so that th e exhaust air stream cannotimpinge upon personnel in the area. Valves, plugs orcaps shall not be installed in the discharge of apressure-relief valve. Where discharge piping isused, the end shall not be threaded.F 5.9 Securi ty. The fire department connectionpanel enclosure shall be locked by an approvedmeans.F 6 Interior Cylinder Fill Panels.F 6.1 Cabinet Requirements. Each cylinder fillpanel shall be installed in a metal cabinet constructedof minimum 18-gauge carbon steel or equivalent.The depth of the cabinet shall not create an exitobstruction when installed in building stairwells.With the exception of the shutoff valve, pressuregauges, fill hoses, and ancillary components, nosystem components shall be visible and shall becontained behind a minimum 18-gauge interiorpanel.F 6.2 Clearance and Access. The panel shall belocated a minimum of36 inches bu t notmore than 60inches above the finished floor or a stairway landing.Clear unobstructed access shall be provided to eachpanel.F 6.3 Door. The door shall be arranged such thatwhen th e door is open, i t does not reduce therequired exit width or create an obstruction in thepath of egress.F 6.4 Cabinet Marking. The front of each cylinderfill panel shall be marked "FIREFIGHTER AIRSYSTEM". The lettering shall be in a color thatcontrasts with the cabinet front and in letters that area minimum of 2-inches high with 3/8-inch brushstroke.F 6.5 Cabinet Components. The cabinet shall be ofsufficient s ize to allow for the installation of thefollowing components:

F 6.5.1 The cylinder fill panel shall contain all ofthe gauges, isolation valves, pressure-reliefvalves,pressure-regulating valves, check valves, tubing,fittings, supports, connectors, hoses, adapters, andother components to refillSCBA cylinders.

350

2007 CALIFORNIA PLUMBING CODEF 6.6 Cylinder Filling Hose. The design of thecabinet shall provide a means for storing the hose toprevent k inking . When the hose is coiled, thebrackets shall be installed so that the hose bendradius is maintained at 4 inches or greater. Fill hoseconnectors for connection to SCBA cylinders shallcomply with the requirements of CGA V-1, number346 or 347. No other SCBA cylinder fill connectionsshall be permitted.F 6.7 Security. Each panel cover shall be maintainedand locked by an approved means.F 7 Interior Cylinder Fill Stations and Enclosures.F 7.1 Location. The location of the closet or room foreach ai r fill s ta tion shall be approved by theAuthority Having Jurisdiction. When approved bythe Authority Having Jurisdiction, the space may beutilized for other firefighting purposes. The door toeach room enclosing the air filling station enclosureshall be readily accessible at all times. A minimumof six (6) foot radius and 180-degree clear unobstructed access to the front of the air filling station shallbe provided. The enclosure shall have emergencylighting installed in accordancewith NFPA 70.F 7.2 Security. Each air fill station shall be installedwithin a lockable enclosure, closet, or room by anapproved means. Access to fill equipment andcontrols shall be restricted to authorized personnelby key or other means.F 7.3 Components. The air fill station shall containall of the gauges, isolation valves, pressure-reliefvalves, pressure-regulating valves, check valves,tubing, fittings, supports, connectors, hoses, adapters,and other components to refill SCBA cylinders.F 7.4 Cylinder Filling Hose. Where hoses are usedthe design of the cabinet shall provide a means forstoring the hose to prevent kinking. When the hoseis coiled, the brackets shall be installed so that thehose bend radius is maintained at 4 inches or greater.Fill hose connectors for connection to SCBAcylinders shall comply with the requirements ofCGA V-1, number 346 or 347. For high-pressureSCBA cylinders (4,500 psi), number 347 connectorsshall be used. For low-pressure SCBA cylinder (3,000psi and 2,200 psi), number 346 connectors shall beused. No other SCBA cylinder fill connections shallbe permitted.F 7.5 Enclosure and Air Filling Station Marking.Each enclosure, closet, or room shall be markedFIREFIGHTERS A I R S Y S T E M ~ 'I;he letteringshall bein a color that'contrasts'with the cabinet front and inletters that are a minimum of 2 inches high with 3/8inch brush stroke.


41/102

FIREFIGHTER BREATHING AIRREPLENISHMENT SYSTEMSF 8.0 Materials.All pressurized components shall be compatible foruse with high-pressure breathing air equipment andself-contained b reathing a ir appar atus . Allpressurized breathing air components shall be ratedfor a minimum working pressure of 5,000 PSI.F 8.1 TUbing. Tubing sha ll be s ta in less steelcomplying with ASTM A269, or other approvedmaterials that are compatible with breathing air atthe system pressure. Routing of tubing and bendsshall be such as to pro te ct the tubing frommechanical damage.F 8.2 Fittings. Fit tings shall be constructed ofstainless steel complying with ASTM A479, or otherapproved materials that are compatible withbreathing air at the system pressure.F 8.3 Prohibited Materials. The use of nonmetallicmaterials, carbon steel, iron pipe, malleable iron,high-strength gray iron, or alloy steel shall beprohibited for breathing ai r pipe and tubingmaterials.F 8.4 Pressure Monitoring Switch. An electric lowpressure monitoring switch shall be installed in thepiping system to monitor the a ir pressure. Thepressure switch shall transmit a supervisory signal tothe central alarm monitoring s tation when thepressure of the breathing air system is less than 80percent of the system operating pressure. Activationof the pressure switch shall also activate an audiblealarm and visual strobe located a t the bui ld ingannunciator panel. A weather-resistant sign shall beprovided in conjunction with the audible alarmstating "FIREFIGHTER AIR SYSTEM - LOW AIRPRESSURE ALARM." Where not par t of a buildingannunciator panel, the letter ing shall be in acontrasting color, and the letters shall be a minimumof 2 inches high with 3/8-inchbrush stroke.F 8.5 Isolation Valve. A system isolation valve shallbe installed downstream of each air fill station andshall be located in the panel or within 3 feet of thestation. The isolation valve shall be marked with itsfunction in letters that are a minimum of 3/16-incheshighwith a 1/16-inch brushstroke.F 9.0 System Requirements.F 9.1 Protection. All components of the FirefighterBreathing Air Replenishment System installed in abuilding or structure shallbe protectedby a minimumtwo (2) hour fire-resistive construction. All components shall be protected from physical damage.F 9.2 Markings. All components shall be clearlyidentified by means of stainless steel or plastic labelsor tags indicating their function. This shall include as

Appendix Fa minimum all fire department connection panels, airfill stations, air storage system, gauges, valves, airconnections, air outlets, enclosures, and doors.F 9.3 Tubing Markings. All tubing shall be clearlymarked "FIREFIGHTERS AIR SYSTEM" and "HIGHPRESSURE BREATHINGAIR" by means of signs orself-adhesive labels. Signs shall be 1 inch high andshall be secured to the tubing. Signs shall be made ofbrass, stainless steel, or plastic and engraved with3/8 inch letters with 1/16 inch stroke lettering. Signsor labels sha ll be placed at a minimum of 20 footintervals and at each fitting, whethe

3812713 Title 24 Part 5 Slice 5 2007 California Plumbing Code

Documents

Transcript of 3812713 Title 24 Part 5 Slice 5 2007 California Plumbing Code