46.02
16397 Rev A Updated 03/2021 © 2021 Victaulic Company. All rights reserved.
5.0 PERFORMANCE (CONTINUED)
CPVC Guidelines
CPVC at Hip Areas
Listed CPVC may be used to feed the FL-SA/RE and
FL-SA/DS sprinklers protecting the Hip areas when
adhering to the following guidelines:
• Wet systems only
• When the horizontal branchline piping feeding
sprinklers within the hip roof areas is run over the
bottom chords of the trusses, it shall be covered
with a minimum of 6 in. (152.4 mm) in depth of
non-combustible insulation (See Figure 34). This
insulation must extend nominally 12 in. (304.8 mm)
on each side away from the centerline of the CPVC
branchline. Insulation is for fire protection purposes.
It is not freeze protection.
• When the horizontal CPVC branchline piping feeding
the sprinklers within the hip roof areas is located within
the ceiling joist, the joist channel must be covered
or filled with a minimum of 6 in (152.4 mm) depth of
noncombustible insulation on top of the branchline
feeding the sprigs (See Figure 33). Insulation is for
fire protection purposes. It is not freeze protection.
• A minimum lateral distance of 18 in (450 mm) is
maintained between the CPVC pipe and a heat
producing device such as heat pumps, fan motors,
and heat lamps.
• The sprinklers (RE or DS) may be fed by exposed
vertical sprigs directly to a sprinkler or exposed
angled sprigs directly to a sprinkler provided:
• Vertical sprigs have no maximum exposed
length, the RE or DS Sprinkler is located at a
maximum lateral distance of 12 in (3304.8 mm)
from the sprig centerline.
• Angled sprigs with a maximum exposed length of
3 ft. (0.9 m).
FL-SA/RE or
FL-SA/DS
FIGURE 33A
VERTICAL SPRIG
FL-SA/RE or
FL-SA/DS
FIGURE 33B
ANGLED SPRIG
FIGURE 33: EXPOSED CPVC AT HIP ROOF AREAS
(HORIZONTAL BRANCHLINE WITHIN JOISTS)
WET SYSTEMS ONLY
FL-SA/RE or
FL-SA/DS
FL-SA/RE or
FL-SA/DS
FIGURE 34A
VERTICAL SPRIG
FIGURE 34B
ANGLED SPRIG
FIGURE 34: CPVC AT HIP ROOF AREAS
(HORIZONTAL BRANCHLINE OVER JOISTS)
WET SYSTEMS ONLY
28
