SYSTEM AREA LIMITATIONS FOR NFPA 13R
SYSTEM AREA LIMITATIONS FOR NFPA 13R
(OP)
First let me say hello, I've lurked here before but now have cause enough to join.
To get to the point I cannot find any reference in NFPA 13R regarding system area limitation. Normally I would insist, based on NFPA 13 that a floor that is over 52,000 SQ.FT requires 2 risers, but this is an existing building where the other floors, all roughly over 71,000 SQ.FT., are already being supplied by one riser. I was about to yell foul, but figured I'd get all my info straight first, unfortunately I cannot find anything in NFPA 13R that says they cannot do so.
So any guidance you all can give on this situation would be helpful, thanks.
phil
To get to the point I cannot find any reference in NFPA 13R regarding system area limitation. Normally I would insist, based on NFPA 13 that a floor that is over 52,000 SQ.FT requires 2 risers, but this is an existing building where the other floors, all roughly over 71,000 SQ.FT., are already being supplied by one riser. I was about to yell foul, but figured I'd get all my info straight first, unfortunately I cannot find anything in NFPA 13R that says they cannot do so.
So any guidance you all can give on this situation would be helpful, thanks.
phil





RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R
Just like you cannot find anything yet.
RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R
apparently 13R does not worry about this for some reason
In your case sounds like existing building existing riser, so kind of stuck with out specific language.
Just wonder how it got installed like that in the first place.
Now if you are the ahj you can ask for another riser and see what happens, since remodel work!!!!
RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R
Sprinkler systems used to be limited to 400 sprinklers.
Light and ordinary was limited to 130 sq ft 130*400=52,000 sq ft per system.
For storage heads were limited to 100 sq ft 100*400=40,000 sq ft.
RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R
But, NFPA 13R (nor 13D) does not have an area limitation. I guess it was assumed that the building code provided an area of limitation for 13R systems.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R
RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R
RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R
It was fun learning how the 40K and 54K square foot values were derived. Thanks guys.
I apologize for being quiet in previous questions. I've been busy on some other projects.
Slow down, ask questions, and question everything.
Scott
RE: SYSTEM AREA LIMITATIONS FOR NFPA 13R