5
Specific Application Attic Sprinkler Design Data
Roof Span*
Flow
Pressure
Sprinkler
***
GPM
(Lpm)
psi
(bar)
Pitch
BB1-
17
⁄
32
60'
(18,3 m)
(or less)
38
(144)
23.7
(1,6) 4:12
(102mm:305mm)
to less than 7:12
(178mm:305mm)
BB2-
17
⁄
32
60'
(18,3 m)
(or less)
38
(144)
23.7
(1,6) 7:12
(178mm:305mm)
to less than 10:12
(254 mm:305mm)
BB3-
17
⁄
32
60'
(18,3 m)
(or less)
40
(152)
26.3
(1,8) 10:12
(254mm:305mm)
to
12:12
(305mm:305mm)
BB1
60'
(18,3 m)
(to more
38
(144)
46.0
(3,2) 4:12
(102mm:305mm)
to less than 7:12
(178mm:305mm)
than 40'
(12,2 m))
BB2
60'
(18,3 m)
(to more
38
(144)
46.0
(3,2) 7:12
(178mm:305mm)
to less than 10:12
(254 mm:305mm)
than 40
(12,2 m))
BB3
60'
(18,3 m)
(to more
38
(144)
46.0
(3,2) 10:12
(254mm:305mm)
to
12:12
(305mm:305mm)
than 40'
(12,2 m))
BB1
40'
(12,2 m)
(or less)
25
(95)
20.0
(1,4) 4:12
(102mm:305mm)
to less than 7:12
(178mm:305mm)
BB2
40'
(12,2 m)
(or less)
25
(95)
20.0
(1,4) 7:12
(178mm:305mm)
to less than 10:12
(254 mm:305mm)
BB3
40'
(12,2 m)
(or less)
25
(95)
20.0
(1,4) 10:12
(254mm:305mm)
to
12:12
(305mm:305mm)
SD1
40'
(12,2 m)
(to more
35
(132)
39.0
(2,7) 4:12
(102mm:305mm)
to less than 7:12
(178mm:305mm)
than 30'
(9,1 m))
SD2
40'
(12,2 m)
(to more
35
(132)
39.0
(2,7) 7:12
(178mm:305mm)
to less than 10:12
(254 mm:305mm)
than 30'
(9,1 m))
SD3
40'
(12,2 m)
(to more
35
(132)
39.0
(2,7) 10:12
(254mm:305mm)
to
12:12
(305mm:305mm)
than 30'
(9,1 m))
SD1
30'
(9,1 m)
(to more
25
(95)
20.0
(1,4) 4:12
(102mm:305mm)
to less than 7:12
(178mm:305mm)
than 10'
(3,0 m))
SD2
30'
(9,1 m)
(to more
25
(95)
20.0
(1,4) 7:12
(178mm:305mm)
to less than 10:12
(254 mm:305mm)
than 10'
(3,0 m))
SD3
30'
(9,1 m)
(to more
25
(95)
20.0
(1,4) 10:12
(254mm:305mm)
to
12:12
(305mm:305mm)
than 10'
(3,0 m))
SD1
10'
(3,0 m) (or less)
19
(72)
11.5
(0,8) 4:12
(102mm:305mm)
to less than 7:12
(178mm:305mm)
SD2
10'
(3,0 m) (or less)
19
(72)
11.5
(0,8) 7:12
(178mm:305mm)
to less than 10:12
(254 mm:305mm)
SD3
10'
(3,0 m) (or less)
19
(72)
11.5
(0,8) 10:12
(254mm:305mm)
to
12:12
(305mm:305mm)
HIP
**28' (8,5 m)
(to more
34
(129)
36.9
(2,5) 4:12
(102mm:305mm)
to less than 12:12
(305mm:305mm)
than 20'
(6,0 m))
HIP
**20' (6,1 m) (or less)
25
(95)
20.0
(1,4) 4:12
(102mm:305mm)
to less than 12:12
(305mm:305mm)
* This is the span as measured horizontal, not along the slope as shown in figure 1.
** The HIP sprinkler spacing is measured as shown in figure 12.
*** For BB and HIP sprinklers in attics greater than 60' (18,3 m) and equal or less than 80' (24,4 m) see
Figures 13 & 14.
Use of U.L. Listed CPVC Piping
To use BlazeMaster CPVC in the attic to feed the wet system ceiling
sprinklers on the floor below, there must be 6" (152,4 mm) of insulation
covering the pipe extending 12" (304,8 mm) on each side away from the
centerline of the pipe and the area above the CPVC must be protected by
Specific Application Attic Sprinklers
(see figure 9). If the pipe is located
inside the ceiling joist, the joist channel must be covered or filled with 6"
(152,4 mm) of non-combustible insulation on top of the pipe and the area
above must be protected by Attic Sprinklers
(see figure 10).
OBSOLETE
