doingwhat
Electrical
- Sep 10, 2013
- 21
Our concern is the that every time we branch off from a primary branchline to pick two or three heads in small rooms the preceding branchline will be viewed as a cross main and then would have to be seismically braced regardless of size. If I only use all 1" to 1-1/2" CPVC for a small 13R project and both 1" & 1-1/2" pipe are supplying the sprinklers directly, so do i still to brace the cpvc pipe or i only need restraint when the pipe is less than 2-1/2"?
3.5.4 Branch Lines. The pipes supplying sprinklers, either directly or through sprigs, drops, return bends, or arm-overs
3.5.5 Cross Mains. The pipes supplying the branch lines, either directly or through riser nipples.
3.5.6. Feed Mains. The pipes supplying cross mains, either directly or through risers.
3.5.4 Branch Lines. The pipes supplying sprinklers, either directly or through sprigs, drops, return bends, or arm-overs
3.5.5 Cross Mains. The pipes supplying the branch lines, either directly or through riser nipples.
3.5.6. Feed Mains. The pipes supplying cross mains, either directly or through risers.