14
I-800
9.
When installing Victaulic FireLock CPVC Sprinkler System Products
perpendicular (system mains) to solid wood joists, UL Listed support
devices must be used to mount the piping directly to the bottom of the
solid wood joists. In addition, it is acceptable to cut holes in the solid
wood joists at or below the center depth of the solid wood joist for sup-
port. Holes must be oversized to allow for movement and must be
located in an area that will not compromise joist integrity. Contact the
local authority having jurisdiction for information regarding structural
integrity.
10.
When installing Victaulic FireLock CPVC Sprinkler System Products
parallel (branch lines) to solid wood joists, the pipe and fittings must be
installed in the cavity below the bottom of the ceiling and above the bot-
tom of the joist. Branch lines must be located at or below the center
depth of the solid wood joist. UL Listed support devices must be used to
mount the piping directly to nominal 2-inch wood blocking. In addition,
UL Listed support devices can be used that offset the pipe a nominal
distance of 1
1
/
2
inches from the solid wood joists.
Branches Supported
with Blocking
Branches Supported
with Hangers
FIGURE “B”
FIGURE “C”
¹⁄₂
Joist
Depth Max.
1³⁄₄
" Max.
¹⁄₂
Joist
Depth Max.
1³⁄₄
" Max.
I-800 2755 Rev_I.fm Page 14 Tuesday, September 13, 2005 8:46 AM