Since the Builder's Association of PA has effectivly block the adoption of any new codes beyond 2009, my question is from the 2007 NFPA 13 as referenced by the 2009 ICC Codes. I am reviewing a structure with four buildings and three open breezeways under one roof. This is an apartment building with open stairs to the second floor units located in the breezeways. There is a 4" DIP supplying the sprinkler system from the authority main to a mechanical room in the basement of one of the center apartments. From the mechanical room, the sprinkler contractor wants to run piping underslab to feed the remainder of the units.
2007, NFPA 13, Section 10.6.1 forbids pipe to be run under buildings. Section 10.6.2 permits this installation if the pipe is in covered trenches and valved to isolate the pipe. Has anyone encountered sprinkler piping run under the slab? Does this section only refer to fire service mains or any sprinkler piping?
2007, NFPA 13, Section 10.6.1 forbids pipe to be run under buildings. Section 10.6.2 permits this installation if the pipe is in covered trenches and valved to isolate the pipe. Has anyone encountered sprinkler piping run under the slab? Does this section only refer to fire service mains or any sprinkler piping?