I agree that 8.15.1.2.1 applies and that A.8.15.1.2.1 explains that non-metalic pipe is allowed. The issue I see is the threshold of combustibles that will require sprinklers is not defined and can cause interpretation issues.
The pipe is 4" Poly pro.
Thanks
I have a Type 1 A building where we have Polypropylene piping above the ceiling(they currenly are not sprinkling above ceiling) and when you look at the 2012 CBC and CMC the piping is allowed in this type of building. CBC 717.5 exception 5 says go to mechanical code and plumbing code which only...