Sprinkler Identification Number (SIN) TY9128 over a coverage area of 100 ft2 (9,29 m2) per...

Application of the Tyco Fire & Building Products

Model EC-25 Sprinkler

Sprinkler Identification Number (SIN) TY9128Patent 4,580,729; 5,829,532 Other Patents Pending

March 13, 2007

Table Of CONTeNTS

Application of the Tyco Fire & Building Products Model EC-25 Sprinkler. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Example of Branch Line Spacing in Bays . . . . . . . . . . . . 3

K11.2/K16.8/EC-25 System #1 Analysis. . . . . . . . . . . . . . 5

Factory Mutual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Comparative Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Sprinkler Performance Comparison for the Protection of Group A Plastic. . . . . . . . . . . . . . . . . . . . . . 11

Full Scale Fire Test for Application of the Tyco EC-25 Sprinkler for Retail Stores . . . . . . . . . . . . . . 12

References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1

As with any new technology, understanding the appropriate application is the key to successful implementation. The EC-25 is simply the most powerful control-mode sprinkler ever developed. In addition to better fire protection, it provides an economic advantage to the user. History will be made recognizing the increased performance of this technology above the “magic” 100 ft2 (9,29 m2) maximum spacing limitations we have all endured for Extra Hazard and Storage occupancies since the development of the spray sprinklers in the early 1950’s. The reality will become clear that for the same reasons current technologies such as ESFR and Large Drop sprinklers have minimum spacing limitations of 80 and 70 ft2 (7,43 and 6,50 m2) respectively, standard spray control-mode sprinklers should also have these minimum spacings. These minimums are based on the concern of skipping (a sprinkler in the fire area being cooled

by adjacent activated sprinklers preventing it from operating), or simply activating too many

sprinklers in a single event. What we have shown is the EC-25’s 100 ft2 (9,29 m2) minimum and the 196 ft2

(18,21 m2) maximum sprinkler spacing provides a superior

level of fire protection by eliminating the skipping and controlling the number of operating

sprinklers. Additionally, consider the safety factor of the discharge from the initial sprinkler in a fire event. With a

K-factor of 25.2 GPM/psi1/2 (362,9 LPM/bar1/2), the first sprinkler with

an average static water supply of 70 psi (4,83 bar) will discharge approximately

210 gpm (795 lpm) or just over a 1.0 gpm/ft2 (40,7 mm/min) over a coverage area of 196 ft2

(18,21 m2) per sprinkler. In contrast, a 17/32” sprinkler with a K-factor of 8.0 GPM/psi1/2

(115,2 LPM/bar1/2), which will only discharge 67 gpm (253,6 lpm) or only a .67 gpm/ft2 (27,2 mm/min) over a coverage area of 100 ft2 (9,29 m2) per sprinkler.

aPPlICaTION Of The TYCO fIre & buIldINg PrOduCTS MOdel eC-25 SPrINkler.

Sprinkler Identification Number (SIN) TY9128

2

aPPlICaTIONTo understand the application and best use of the EC-25, a few examples of the benefits are listed below:

1- SpacingThe 14 ft (4,27 m) maximum spacing of the EC-25 technology offers great flexibility in optimizing the number of sprinklers in a bay, as well as the location of outlets on the branch lines, especially, if used with welded or mechanical tee fittings. Even when the 14 ft (4,27 m) does not save the user a branch line in a bay (2 lines in a 24’ (7,32 m) bay), the ability to space the EC-25 at 12 ft (3,66 m) along the branch lines results in typical 24 ft (7,32 m) branch line pipe lengths with 2 outlets. Standard sprinklers having the 100 ft2 (9,29 m2) spacing maximum leaves the spacing along the branch lines at 8 ft or 8’-3” (2,44 or 2,51 m), requiring 3 outlets and the possibility of non-typical branch piping. The table below and example outline the optimum bay spacing for branch line savings. Always keep in mind the above paragraph if a line per bay is not saved.

Optimum Bay Spacing for Branch Line Savings

baY SPaCINg>25”* to 28’

(7,62 to 8,53 m)>36’ to 42’

(10,97 to 12,80 m)>48’ to 56’

(14,63 to 17,07 m)

Standard Spray 12’ (3,66 m) Max.

3 Branch Lines* 4 Branch Lines 5 Branch Lines

Tyco EC-25 14’ (4,27 m) Max.

2 Branch Lines 3 Branch Lines 4 Branch Lines

*NFPA exception for a 25’ (7,62 m) bay - 12’-6” (3,81 m) is allowed for standard spray sprinklers, 12’-6” (3,81 m) is not allowed for bays greater than 25’ (7,62 m).

3

A B C>25'-0" to 28'-0"(7,62 to 8,53 m)

>25'-0" to 28'-0"(7,62 to 8,53 m)

7'-0"

(2,13 m)

7'-0"

(2,13 m)

14'-0"

(4,27m)

14'-0"

(4,27 m)

14'-0"

(4,27 m)

Bay

EC-25196 ft2 (18,2 m2)

STD100 ft2 (9,3 m2)

4'-8"

(1,42m)

4'-8"

(1,42m)

9'-4"

(2,84 m)

9'-4"

(2,84 m)

Bay

10'-81Ú

2"

(3,26 m)

10'-81Ú

2"

(3,26 m)

10'-81Ú

2"

(3,26 m)

Versus

EC-252 Branch Lines

STD3 Branch Lines

exaMPle Of braNCh lINe SPaCINg IN baYS

using >25’ to 28’ (7,62 to 8,53 m) bays

4

2- TemperatureIt is important to note that the EC-25 is available only in 165˚F/73,9˚C and 214˚F/101,1̊ C. While NFPA has Tables and sections, which give credits for high temperature sprinklers (250˚F/121, 1̊ C to 300˚F/148,9˚C), the EC-25 is approved for the application of the credits for the high temperatures, using the 165˚F/73,9˚C or 214˚F/101,1̊ C EC-25 sprinkler. The 165˚F/73,9˚C EC-25 performed as well if not better than the high temperature standard spray sprinklers.

3- Operating PressuresWith the EC-25 technology, the myth that extended coverage sprinklers require too much pressure has been shattered. Keep in mind that this sprinkler has the flexibility of odd spacing for the purpose of hydraulic calculations (density/area method), which is different from previous extended coverage technology. As you can see from the chart below, the operating pressure is relative to the actual area of coverage. Additionally do not pass up the opportunity to take advantage of the extremely low operating pressures at 100 ft2 (9,29 m2) as if this sprinkler was a standard coverage. No other sprinkler will deliver a .8 gpm/ft2 (32,5 mm/min) density for 100 ft2 (9,29 m2) at only 10.1 psi (0,70 bar).

4- actual System designThe following system is an actual example of branch line savings without major modifications to the pipe size, which is a credit to the low operating pressures.

EC-25 Operating Pressure at Various Spacings

eC-25 SPaCINg

deNSITY

37 gpm/ft2

(15,0 m/min).45 gpm/ft2

(18,3 m/min).6 gpm/ft2

(24,4 m/min).8 gpm/ft2

(32,5 m/min)1.0 gpm/ft2

(40,7 m/min)

100 ft2 (10’x10’) 9,29 m2 (3,05 x 3,05 m)

7.0 psi (0,48 bar)

7.0 psi (0,48 bar)

7.0 psi (0,48 bar)

10.1 psi (0,70 bar)

15.8 psi (1,09 bar)

120 ft 2 (10’x12’) 11,15 m2 (3,05 x 3,66 m)

7.0 psi (0,48 bar)

7.0 psi (0,48 bar)

8.2 psi (0,57 bar)

14.5 psi (1,00 bar)

22.7 psi (1,57 bar)

140 ft 2 (10’x14’) 13,01 m2 (3,05 x 4,27 m)

7.0 psi (0,48 bar)

7.0 psi (0,48 bar)

11.1 psi (0,77 bar)

19.8 psi (1,37 bar)

30.9 psi (2,13 bar)

144 ft 2 (12’x12’) 13,38 m2 (3,66 x 3,66 m)

7.0 psi (0,48 bar)

7.0 psi (0,48 bar)

11.8 psi (0,81 bar)

20.9 psi (1,44 bar)

32.7 psi (2,25 bar)

150 ft 2 (12’x12’-6’’) 13,38 m2 (3,66 x 3,81 m)

7.0 psi (0,48 bar)

7.2 psi (0,50 bar)

12.8 psi (0,88 bar)

22.7 psi (1,57 bar)

35.4 psi (2,44 bar)

168 ft2 (12’x14’) 15,61 m2 (3,66 x 4,27 m)

7.0 psi (0,48 bar)

9.0 psi (0,62 bar)

16.0 psi (1,10 bar)

28.4 psi (1,96 bar)

44.4 psi (3,06 bar)

182 ft2 (13’x14’) 16,91 m2 (3,96 x 4,27 m)

7.1 psi (0,49 bar)

10.6 psi (0,73 bar)

18.8 psi (1,30 bar)

33.4 psi (2,30 bar)

52.2 psi (3,60 bar)

196 ft2 (14’x14’) 18,21 m2 (4,27 x 4,27 m)

8.3 psi (0,57 bar)

12.3 psi (0,85 bar)

21.8 psi (1,50 bar)

38.7 psi (2,67 bar)

60.5 psi (4,17 bar)

5

k11.2/k16.8/eC-25 SYSTeM #1 aNalYSIS

Actual Layout 11.2& 16.8 K-factorStandard SpraySprinklers

6" (ELO's)6" (K17)

6" (ELO's)6" (K17)

4" (ELO's)4" (K17)

230'

150'

2" BL's (ELO's)2" BL's (K17)

Actual Layout25.2 K-factorTyco EC-25

6" (EC-25)

6" (EC-25)

6" (EC-25)150'

224'

2" BL's (EC-25)

Notice the number of branch line savings from above.[ ]

6

k11.2/k16.8/eC-25 SYSTeM #1 aNalYSIS (CONT.)

EC-25 SYSTEM - 0.60 gpm/ft2 (24,4 mm/min) Density 27’ (8,23 m) Bldg. & 20’ (6,10) Storage

Supply @ Base Of Riser = Static 82 psi (5,65 bar), Residual 71 psi (4,90 bar), Flow - 2123 gpm

Material k11.2 k16.8 eC-25

Total branch- line footage

3600’ @ 2” NPS (1097,3 m @ 50 mm)

3600’ @ 2” NPS (1097,3 m @ 50 mm)

2550’ @ 2” NPS (777,2 m @ 50 mm)

Total Main footage

230’ @ 6” NPS (70,1 m @ 150 mm)

&230’ @ 4”

(70,1 m @ 150 mm)

230’ @ 6” NPS (70,1 m @ 150 mm)

&230’ @ 4”

(70,1 m @ 150 mm)

448’ @ 6” NPS (136.6 m @ 150 mm)

Total feed Main footage

20’ @ 6” (6,10 m @ 150 mm)

20’ @ 6” (6,10 m @ 150 mm)

20’ @ 6” (6,10 m @ 150 mm)

riser footage±27’ @ 6”

(8,23 m @ 150 mm)±27’ @ 6”

(8,23 m @ 150 mm)±27’ @ 6”

(8,23 m @ 150 mm)

hYdraulICS

K11.2 System Req. Press.69.26 psi (4,78 bar) @

1239.4 gpm (4691,6 lpm)Avail. Press. = 77.9 psi

(5,37 bar)

K16.8 System Req. Press.54.36 psi (3,75 bar) @


(5,36 bar)

EC-25 System Req. Press.76.42 psi (5,27 bar) @


(5,32 bar)

Another example is as follows:

Possible branch-line savings per bay can be a major factor. Greater than 25’ (7,62 m) to 28’ (8,53 m) bays are optimum.[ ]Less required pressure at almost double the spacing of an 11.2 K sprinkler[ ]

40,000 ft2 (3716,1 m2) Building

200 ft (61.0 m) Long Bays @ .60 gpm/ft2 (24,4 mm/min) Density

Number of Branch Lines Per Bay

3 2

Number of Sprinklers Per Bay

57 30

Total Sprinklers 407 214

Minimum Pressure Required at Each Head

28.7 psi (1,98 bar) @ 100 ft2 (9,29 m2)

21.7 psi (1,50 bar) @ 196 ft2 (18,21 m2)

7

faCTOrY MuTual The following section is information relative to the Factory Mutual Approval and Application of the EC-25 sprinkler technology. The information has been edited to incorporate the reference to NFPA standards as Factory Mutual is an organization that qualifies under the NFPA definition of a ‘Listed’ product. As with any project being designed to Factory Mutual criteria, follow Data Sheet 2-8N, 8-9 and Engineering bulletin 02-01.The Tyco Model EC-25 control-mode extended-coverage sprinklers have been Approved. Full-scale fire testing has shown that these control-mode sprinklers are acceptable for all current density/area applications. The FM Approval gains recognition in NFPA 13 as a Nationally Recognized Laboratory as well as FM Global ENGINEERING BULLETIN 02-01 (Reference with Data Sheet 2-8N). The design and installation of these sprinklers will simply follow the rules for Standard Spray Control Mode Density/Area sprinklers such as 8.0 gpm/psi1/2 (115,2 lpm/bar1/2) K-factor (Large Orifice), 11.2 gpm/psi1/2 (161,3 lpm/bar1/2) K-factor (ELO) and 16.8 gpm/psi1/2 (241,9 lpm/bar1/2) K-factor (K17). All of the rules for design and installation will remain the same for these sprinklers in NFPA applications as well as FM Data Sheet 2-8N with the following changes:

1. applicationThese Approved extended-coverage control-mode sprinklers may be used to protect any occupancy for which there is a density/area design. They are not Approved for use in control-mode specific application (e.g. large-drop) or suppression-mode (ESFR) protection designs.

2. Temperature ratingThe Tyco Model EC-25 will be available in ordinary and intermediate temperature ratings. The ordinary temperature rated model should be used for all applications except those where high ambient temperatures require use of intermediate temperature rated sprinklers. For occupancies where there is a reduced design density and/or design area specified for high temperature rated sprinklers, the same reduced design density and/or area can be used for the ordinary or intermediate temperature Model EC-25, control-mode extended-coverage sprinklers. The use of ordinary temperature rated sprinklers is recommended if ambient temperatures permit.

3. hydraulic designDensity/area designs should be the same as those for 11.2 gpm/psi1/2 (161,3 lpm/bar1/2) K-factor control-mode density-area (ELO) sprinklers when a separate sprinkler design criteria is presented for 11.2 gpm/psi1/2 (161,3 lpm/bar1/2) K-factor control-mode density-area (ELO) sprinklers. Otherwise use the same design criteria as 5.6 gpm/psi1/2 (80,6 lpm/bar1/2) K-factor (Standard Orifice) or 8.0 gpm/psi1/2 (115,2 lpm/bar1/2) K-factor (Large Orifice) control-mode density-area sprinklers. The minimum design pressure is 7 psi (0,49 bar). Use a K-factor of 25.2 gpm/psi1/2 (362,9 lpm/bar1/2). As for all density/area sprinklers, the hydraulic design for EC-25 sprinklers should be based on the design density applied over the actual area of coverage per sprinkler (i.e. Sprinkler spacing of 11 ft by 14 ft (3,35 m by 4,27 m) will be hydraulically calculated based on 154 ft2 (14,3 m2) of coverage).

8

4. System TypeWet-pipe, dry-pipe, or preaction systems are acceptable.

5. Sprinkler SpacingThe maximum area of coverage per sprinkler is 196 ft2 (18,2 m2). The minimum area of coverage per sprinkler is 100 ft2 (9.3 m2). The maximum distance between sprinklers is 14 ft (4,27 m). The minimum distance between sprinklers is 10 ft (3,05 m).

Exception: When a wall or obstruction makes a minimum spacing of 10 ft (3,05) impossible between the line of sprinklers along the wall or obstruction and the next adjacent line of sprinklers, the minimum distance from the sprinklers located along the wall or obstruction to the sprinklers located on the adjacent row can be a minimum of 7 ft (2,13 m). In this case the sprinklers located along the wall or obstruction must be hydraulically calculated for a 100 ft2 (9.3 m2) coverage area or their actual coverage area, whichever is greater.

6. Sprinkler locationLocate sprinklers with respect to the ceiling/roof as a standard control mode sprinkler with the following two exceptions:

Exception 1: Sprinklers to be installed within one inch (25,4 mm) of the bottom of concrete tees regardless of the depth of the tees, does not apply to extended coverage control mode sprinklers due to the potential for delay in sprinkler operation.

Exception 2: For obstructed construction, when the structural members are deeper than 12 in (304,8 mm) and spaced less than 42” (1,07 m) on center (such as concrete tee construction), install sprinklers in every bay.

7. ObstructionsFollow the obstruction requirements for Standard Spray Control-Mode Density-Area sprinklers.

dISCuSSIONThe Tyco Model EC-25 control-mode extended coverage upright sprinkler has successfully undergone full-scale fire testing for use in density/area design applications. The following Tables show the dramatic performance of the EC-25 technology compared to standard spray sprinklers, even against the most advanced 16.8 gpm/psi1/2 (241,9 lpm/bar1/2) K-factor.

9

COMParaTIve TeSTINg

Ever wonder where 0.6 gpm/ft2 (24,4 mm/min) for 2500 ft2 (232,3 m2) design area in NFPA came from? Here it is![ ]

Ever wonder where 0.37gpm/ft 2 (15,0 mm/min) for 2000 ft2 (185,8 m2) design area in NFPA came from? Here it is![ ]

15 ft (5,57 m) high Palletized Storage of group a Plastic in a 25 ft (7,62 m) high building.Standard Spray k8 and k11.2 Sprinklers Spaced at 80 ft2 (7,4 m2)versus eC-25 Sprinklers Spaced at 196 ft2 (18,2 m2).

TeST SerIeS SP 18

SPrINkler k8 k11.2 eC-25

TeST daTe 11/29/73 12/6/93 5/16/00

COMMOdITY group a group a group a

arraNgeMeNT Palletized Palletized Palletized

CeIlINg heIghT (ft) 25 25 25

STOrage heIghT (ft) 15 15 15

IgNITION lOCaTION 4 4 4

PreSSure (psi) 36 19 22

gaS Peak TeMP (f) 2004 1509 506

gaS 1 MINuTe Peak (f) 1818 1377 282

STeel Peak TeMP (f) NM 203 133

STeel 1 MINuTe Peak (f) NM 196 132

# OPeN SPrINklerS 24 16 2

deNSITY (gpm/sq ft) 0.6 0.6 0.6

PalleTS CONSuMed 20 2 6

20 ft (6,10 m) high rack Storage of Class II in a 30 ft (9,14 m) high building. Standard Spray k5.6 and k11.2 Sprinklers Spaced at 100 ft2 (9,3 m2) versus eC-25 Sprinklers Spaced at 196 ft2 (18,2 m2).

TeST SerIeS SP 18

SPrINkler k5.6 k11.2 eC-25

TeST daTe 11/13/69 11/29/93 4/25/00

COMMOdITY Class II Class II Class II

arraNgeMeNT rack rack rack




PreSSure (psi) 43 11 8.5

gaS Peak TeMP (f) 829 631 682


STeel Peak TeMP (f) NM 308 138

STeel 1 MINuTe Peak (f) NM 306 137




10

This fell under .6 gpm/ft2 (24,4 mm/min) for 4000 ft2 (371,6 m2) design area, which is in NFPA[ ]

This is comparative testing with bays in-between the sprinklers creating empty pockets, they still did great.[ ]

15 ft (4,57 m) high rack Storage of group a Plastics in a 25 ft (7,62 m) high building. Standard Spray k8, k11.2 and k16.8 Sprinklers Spaced at 100 ft2 (9,3 m2) versus eC-25 Sprinklers Spaced at 196 ft2 (18,2 m2).

TeST SerIeS rSP-7

SPrINkler k8 k11.2 k16.8 eC-25 eC-25

TeST daTe 10/22/75 3/26/92 9/22/97 5/3/00 6/6/00

COMMOdITY group a group a group a group a group a

arraNgeMeNT rack rack rack rack rack

CeIlINg heIghT (ft) 25 25 25 25 25

STOrage heIghT (ft) 15 15 15 15 15

IgNITION lOCaTION 4 4 1 1 1

PreSSure (psi) 55 29 12.5 22 7

gaS Peak TeMP (f) 1957 817 537 294 264

gaS 1 MINuTe Peak (f) 1877 612 312 152 189

STeel Peak TeMP (f) NM 163 135 89 132

STeel 1 MINuTe Peak (f) NM 159 134 88 131

# OPeN SPrINklerS 29 4 7 1 3

deNSITY (gpm/sq ft) 0.6 0.6 0.6 0.6 0.6+

PalleTS CONSuMed 26 2 4 1 4

20 ft (6,10 m) high rack Storage of group a Plastics in a 25 ft (7,62 m) high building Comparison with Obstructed Construction.

uNObSTruCTed ObSTruCTed

SPrINkler eC-25 eC-25 eC-25

TeST daTe 5/9/00 5/23/00 5/26/00

COMMOdITY group a group a group a

arraNgeMeNT rack rack rack




PreSSure (psi) 22 22 22

gaS Peak TeMP (f) 955 1194 1369


STeel Peak TeMP (f) 151 201 270

STeel 1 MINuTe Peak (f) 150 193 269




ObSTruCTION dePTh None 9 Inch 15 Inch

11

gaS Peak TeMP

gaS 1 MINuTe Peak

STeel Peak TeMP

STeel 1 MINuTe Peak

2000

1800

1600

1400

1200

1000

800

600

400

200

0

Te

MP

(f)

k8 k11 k17 k25-eC

SPrINkler TYPe

This was considered a success in the 1970’s[ ]

SPrINkler PerfOrMaNCe COMParISON fOr The PrOTeCTION Of grOuP a PlaSTIC

Temperature Control

Fewer sprinklers and lower commodity loss equals less fire damage![ ]

# o

f O

pen

Sp

rink

lers

an

d

Pal

let

load

s C

on

sum

ed

# OPeN SPrINklerS

PalleTS CONSuMed

18

41

95

14

k5.6 k11 k25-eC

SPrINkler TYPe

45

40

35

30

25

20

15

10

5

0

Commodity Damage and Number of Sprinklers Activated in Test

12

uNderwrITerS labOraTOrIeS (ul)full SCale fIre TeST fOr aPPlICaTION Of The TYCO eC-25 SPrINkler fOr reTaIl STOreS These designs are based on fire testing at Underwriters Laboratories and represent conditions existing in many retail stores. In all comparisons made, the K-25 EC sprinkler outperformed the smaller orifice sprinklers. These designs are based on Full-Scale fire test data, which is the basis for an equivalent method of protection as allowed by NFPA 13.Fire loading in these tests markedly exceeded the fire loading in existing stores, with ceiling only protection.All tests with the EC-25 were conducted with ignitions between four sprinklers. Similar successful tests were conducted with slatted shelves and limited solid shelves in the lower tiers, with Group “A” Plastic commodities, utilizing the 11.2 gpm/psi1/2 (161,3 lpm/bar 1/2) K-factor sprinklers. These tests were conducted with ignition between two sprinklers and under one sprinkler. Because of the use of extended coverage -14 ft by 14 ft (4,27 by 4,27 m), ignition between four sprinklers was utilized. In recognition of other possible ignition scenarios, 70 ft (21,34 m) rack length limitations were inserted to ensure limitation of sprinkler operations to no more than the design area for the solid shelf arrangements. If a fire burned the entire length of a 70 ft (21,34) rack, sprinkler operations would not exceed the 2000 ft2 (185,8 m2) design.Sprinkler design criteria for storage and display of Class I-IV commodities, cartoned (non-expanded and expanded) Group A plastics, and non-expanded exposed Group A plastics in retail stores.

13

1. home depot, Sam’s and like storesA wet pipe system designed to provide 0.7 gpm/ft2 (28.5 mm/min), density over 2000 ft2 (185,8 m2) area for the first 4 sprinkler operations and a 0.6 gpm/ ft2 (48.4 mm/min) density over 2000 ft2 (185,8 m2) area shall be permitted to protect single and double row slatted shelf racks when the following conditions are met:[a] EC-25 listed for storage occupancies shall be provided.[b] Shelves shall be slatted using a 2 in (50,8 mm) thick by maximum 6 in (152,4 mm) wide slat

held in place by spacers that maintain a minimum 2 in (50,8 mm) opening between each slat.[c] There shall be no slatted shelf levels in the rack above nominal 12 ft (3,66 m) level. Wire mesh

(greater than 50 percent opening) shall be permitted for shelf levels above 12 ft (3,66 m).[d] Solid plywood shelving (3-1/2 ft x 8 ft 3 in - 1,07 m x 2,51 m) shall be permissible over the wood

slats at the 5 ft (1,52 m) level.[e] Perforated metal (open area of 40 percent or more) shall be permitted over the slatted shelves

up to the 60-in (1,52 m) level.[f] Other than what is allowed in this section, solid plywood or similar materials shall not be

placed on the slatted shelves.[g] Solid veneered particleboard displays shall be permissible provided that all flues are maintained

and only one display is installed per bay.[h] Maximum roof height shall be 30 ft (9,14 m) in the protected area.[i] Maximum storage height shall be 22 ft (6,71 m)[j] Aisle widths shall be a minimum of 8 ft (2,44 m)[k] Minimum transverse flue spaces of 3 in (76,2 mm) every 10 ft (3,05 m) horizontally shall be

provided.[l] Minimum longitudinal flue spaces of 6 in (152,4 mm) shall be provided for double-row racks.[m] Storage in the aisle shall be permissible provided the aisle storage is no more than 4 ft (1,22

m) high and a minimum clear aisle of 4 ft (1,22 m) is maintained.

14

2. wal-Mart and like storesA wet pipe system designed to provide a 0.50 gpm/ft2 (20,3 mm/min) density over a 2000 ft2 (185,8 m2) area for the first four sprinkler operations, and a 0.425 gpm/ft2 (17,3 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers, shall be permitted in solid steel cantilever style retail shelving racks (gondola racks) when the following conditions are met:[a] EC-25 sprinklers listed for storage occupancies shall be provided.[b] The storage height shall not exceed 12 ft (3,66 m).[c] The ceiling height shall not exceed 22 ft (6,71 m) in the protected area.[d] Gondola rack structure shall not exceed 48 in (1,22 m) in aggregate depth or 78 in (1,98 m) in

height.[e] Maintain a minimum aisle of 5 ft (1,52 m) between storage.[f] Rack lengths shall be no more than 70 ft (21,34 m).

3. best buy and like storesA wet system designed to provide a 0.50 gpm/ft2 (20,3 mm/min) density over a 2000 ft2 (185,8 m2) area for the first four sprinkler operations, and a 0.425 gpm/ft2 (17,3 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers, shall be permitted in solid steel cantilever-style retail shelving racks (gondola racks) when the following conditions are met:[a] EC-25 sprinklers listed for storage occupancies shall be provided.[b] Storage height shall not exceed 15 ft (4,57 m).[c] Ceiling height shall not exceed 25 ft (7,62 m) in the protected area.[d] Gondola rack structure shall not exceed 60 in. in aggregate depth or 8 ft (2,44 m) in height.[e] A perforated metal deck at the 8 ft (2,44 m) level shall be permissible with storage placed on

top with or without flue spaces to a maximum height from floor of 15 ft (4,57 m).[f] Rack lengths shall not exceed 70 ft (21,34 m).[g] A minimum aisle space of 6 ft (1,83 m) shall be provided.

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4. Target and like storesA wet system designed to provide a 0.55 gpm/ft2 (22,4 mm/min) density over a 2000 ft2 (185,8 m2) area for the first four sprinkler operations, and a 0.45 gpm/ft2 (18,3 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers shall be permitted when the following are met:[a] EC-25 sprinklers listed for storage occupancies shall be provided.[b] Storage height shall not exceed 15 ft (4,57 m).[c] Ceiling height shall not exceed 25 ft - 0 in (7,62 m).[d] Shelving structure shall not exceed 48 in (1,22 m) aggregate depth or 12 ft (3,66 m) in height. [e] Shelving shall be permitted to be made of solid particleboard.[g] A minimum aisle space of 3 ft - 1 in (0,94 m) shall be maintained.[h] Rack length shall be a maximum of 70 ft (21,34 m).

5. Office depot and like storesA wet system designed to a 0.45 gpm/ft2 (18,3 mm/min) density over a 2000 ft2 (185,8 m2) area for the first four sprinkler operations, and a 0.38 gpm/ft2 (15,4 mm/min) density over a 2000 ft2

(185,8 m2) area, without the use of in-rack sprinklers shall be permitted in steel retail sales floor shelving racks where the following are met:[a] EC-25 sprinklers listed for storage occupancies shall be provided.[b] Storage height shall not exceed 14 ft (4,27 m).[c] Ceiling height shall not exceed 20 ft (6,10 m).[d] Solid metal shelving shall be permissible up to the 72 in (1,83 m) level and wire shelving shall

be permissible up to the 10 ft (3,05 m) level.[e] The solid metal shelving shall not exceed 66 in (1,68 m) in aggregate depth with a 6 in (152,4

mm) longitudinal flue between two 30 in (0,76 m) deep shelves.[f] A minimum aisle space of 5 ft (1,52 m) shall be maintained.[g] A minimum longitudinal flue of 6 in (152,4 mm) shall be maintained.[h] Rack length shall be a maximum of 70 ft (21,34 m).

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6. bed bath and beyond and like storesA wet system designed to provide a 0.55 gpm/ft2 (22,4 mm/min) density over a 2000 ft2 (185,8 m2) area for the first four sprinkler operations, and a 0.49 gpm/ft2 (19,9 mm/min) density over a 2000 ft2 (185,8 m2) area, without the use of in-rack sprinklers, shall be permitted in retail solid shelved steel rack structure when the following are met:[a] EC-25 sprinklers listed for storage occupancies shall be provided.[b] Storage height shall not exceed 16.5 ft (5,03 m).[c] Ceiling height shall not exceed 22 ft (6,71 m).[d] Shelving structure shall not exceed 51 in (1,30 m) aggregate depth or 148 in (3,76 m) in height.[e] The intersection of perpendicular steel racks shall be permissible as long as no storage is placed

within the void space at the junction of the racks.[f] The top shelf shall be wire mesh.[g] A minimum aisle width of 4 ft (1,22 m) shall be maintained between shelf units and other

displays.

refereNCeS Kung, Hsiang-Cheng, Vincent, Bennie G., and Troup, Joan M. A., “Performance Evaluation of Tyco Model EC-25 Control-Mode Extended-Coverage Sprinklers for Storage Occupancies,” FMRC Report J.I. 3007168/3007169, May 2001 Pabich, Martin J., and Sheppard, David T., “Report of Large-Scale Fire Tests of Retail Shelf Display and Rack Storage of Cartoned Group A Plastics Utilizing Extended Coverage Sprinklers Having a Nominal F-factor of 25.2,” UL Report 00NK22528, NC4119, November 2000 Troup, Joan M. A., “Full-Scale Fire Test Performance Evaluation of Central’s Model K17-231TM Sprinklers,” FMRC Report J.I. 0D1R8.PR (2), January 1998 Troup, Joan M. A., and Chicarello, Peter J., “Large-Scale Fire Tests of Stored Commodities Protected by Central Model D.64 Sprinklers,” FMRC Report J.I. 0W0R4.RR, September 1992 National Fire Protection Association. “Installation of Sprinkler Systems - NFPA 13,” 1999 Edition “NFPA 13 Standard for the Installation of Sprinkler Systems 1996 Edition,” Loss Prevention Data Sheet 2-8N, FM Global, Norwood, Massachusetts, 1999, Revised January 2001 “Storage of Class 1, 2, 3, 4, and Plastic Commodities,” Loss Prevention Data Sheet 8-9, FM Global, Norwood, Massachusetts, 1997, Revised January 2001 “Tyco Fire Products (Central, GEM, and Star) Model EC-25 Control-Mode Extended-Coverage Sprinklers (SIN TY9128),” FM Global Engineering Bulletin 02-01, FM Global, Norwood, Massachusetts, February 2001

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Sprinkler Identification Number (SIN) TY9128 over a coverage area of 100 ft2 (9,29 m2) per...

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