I have been asked to design a sprinkler system for a 4 story building as per NFPA 13R. The building has existing standpipes consisting of three 2 1/2” risers. I am hoping to use the existing standpipe risers to also feed the sprinkler system.
In this scenario would it make sense to include a hose allowance even though NFPA 13R does not require it? Also, since NFPA 13R doesn’t require zoning by floor, would it be plausible to have one single “Standpipe & Sprinkler Water Flow Alarm” at the water entry?
I appreciate and respect your input.
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