Sprinkler loads.
Sprinkler loads.
(OP)
I just received a sprinkler plan from the designer and I am a bit confused. The designer is stating that the NFPA 13 code requires the building to support the weight of the pipe + 250# load. This is creating some rather large sprinkler loads in some instances they are requiring my structure (mainly joist and deck) to support 1,100+ # loads. Over 1,000# for a 6" dia sprinkler pipe.... Are your serious!
Now I know I can manipulate this load because they spaced the hangers at 15'-0" o.c. by having them attach to the structure more often. I have never heard o the 250# requirement. Has anyone else? Can someone shed some light on this NFPA 13 requirement?
The structure was designed allowing 3psf for sprinklers. This is now appearing to be way off what would be needed to support the sprinklers. What do others allow for sprinkler weight in their designs?
Now I know I can manipulate this load because they spaced the hangers at 15'-0" o.c. by having them attach to the structure more often. I have never heard o the 250# requirement. Has anyone else? Can someone shed some light on this NFPA 13 requirement?
The structure was designed allowing 3psf for sprinklers. This is now appearing to be way off what would be needed to support the sprinklers. What do others allow for sprinkler weight in their designs?






RE: Sprinkler loads.
RE: Sprinkler loads.
RE: Sprinkler loads.
RE: Sprinkler loads.
Mike McCann
MMC Engineering
RE: Sprinkler loads.
RE: Sprinkler loads.
The anchor should be designed to take the 250# additional, but for main structural elements, I would lump the 250# into the overall live load, as a minimum load, but not an additional load applied simultaneous with other live loads. Those kinds of complications are a reason for the load factors - to allow a bit a fudge on unusually combined loads.