9
Table 1* — Spacing for Vertical Obstructions
Figure 13
BB™ and HIP™ Sprinklers for Attics Greater
Than 60' and Equal or Less Than 80'
Attic sprinklers in buildings over
60'-0" up to 80'-0" wide
Attic sprinklers in conjunction with stan-
dard sprinklers can be used to protect
attics over 60'-0" up to 80'-0" wide. Attics
over 80'-0" wide must use standard
sprinklers throughout as attic sprinklers
have not completed testing in this sce-
nario. To use attic sprinklers in these
attics, space attic sprinklers to protect the
center portion of the building, add stan-
dard sprinklers around the perimeter at a
maximum of 7'-0" and a minimum of 6'-0"
on center. The HIP™ sprinklers can
continue down the hip. Start spacing
standard sprinklers 31'-0" away from the
corner.
Figure 14
If the attic has noncombustible insulation on the ceiling
below the attic sprinklers, the area of coverage is mea-
sured from the top of the insulation.
Maximum Dimension
Minimum Horizontal
of Obstruction
Distance to Obstruction
1
⁄
2
"-1"
6"
>1"-4"
12"
>4"-8"
24"
>8"-10"
5'
>10"-20"
10'
>20"-30"
15'
>30"-40"
20'
>40"-48"
25'
>48"
sprinkler required beyond
* When minimum horizontal distance is less than Table 1,
an additional sprinkler is required beyond the obstruction.
Width of Attic Sprinkler™ Spacing
Figure 15 — BB™ and HIP™ Sprinklers Plan View Perimeter Protection
Coverage by standard sprinklers
Max. 7'-0" on center
80'
6'-0"
o.c.
Plan View Parimeter Protection
10'
10'
60'-0"
Start spacing
at 31'-0" away
from corner
Standard spray sprinkler
spaced 7'-0" to 6'-0"
on center
10' Max.
10' Max.
60' maximum for Attic Sprinkler™ coverage
80'
Standard spray sprinkler
spaced 7'-0" to 6'-0"
on center
Attic Sprinklers™
OBSOLETE
