NFPA 25 - Water Flow Requirements
NFPA 25 - Water Flow Requirements
(OP)
Hello All,
Are there specific water flow requirements for an NFPA 25 fire protection system that is installed within a general purpose assembly (e.g., an auditorium)? If so can you please provide some information.
Thanks for your help in advance!
Mitch
Are there specific water flow requirements for an NFPA 25 fire protection system that is installed within a general purpose assembly (e.g., an auditorium)? If so can you please provide some information.
Thanks for your help in advance!
Mitch





RE: NFPA 25 - Water Flow Requirements
What exactly are you seeking: fire flow, the required discharge density and design area for an automatic sprinkler system, etc.?
RE: NFPA 25 - Water Flow Requirements
Thanks for the expeditious response.
RE: NFPA 25 - Water Flow Requirements
If so is this project on a military base?
RE: NFPA 25 - Water Flow Requirements
RE: NFPA 25 - Water Flow Requirements
All 25 is concerned with is IF water will flow, not how much.
For that information you will need NFPA 13 and a qualified contractor to perform calculations, that is if the hydraulics placard is not there.
If there is a required hydraulics placard at the main System Riser, the information you are seeking will be there. (red sign 4"x6" or so, attached to System Riser)
The information will be for that building/system only. Each one is different.
There are ways to "guess-timate" what is required, but it would be just that....
R/
Matt
RE: NFPA 25 - Water Flow Requirements
New system to be installed or existing system?
RE: NFPA 25 - Water Flow Requirements
RE: NFPA 25 - Water Flow Requirements
These are the kinds of things you need to be looking at. That is why there is no way for people on a forum to provide a real answer to this. It will be very specific to the job.
As the wise old man, Matt Willis, pointed out, anything provided here would be a "guesstimate" and because of the variable I stated above, it could be way off. A wet system in a 10' ceiling could be roughly 100 gpm from the sprinklers. A dry system in a very cut up attic could be as much as 500 gpm demand from the sprinklers. See how wide the range is.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
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