System protection area limitations
System protection area limitations
(OP)
Good day.
Does the NFPA system protection area limitation is equal to the required by FM Standards. I'm working in a FM fire protection system and I haven't found in which Data Sheet is this information. By NFPA I have extra hazard (one riser per every 40000ft2) and by FM Standard the project is HC-3.
In advance thanks for your time and help.
Does the NFPA system protection area limitation is equal to the required by FM Standards. I'm working in a FM fire protection system and I haven't found in which Data Sheet is this information. By NFPA I have extra hazard (one riser per every 40000ft2) and by FM Standard the project is HC-3.
In advance thanks for your time and help.





RE: System protection area limitations
Maybe 2.4.1.6
One example of a situation where the FM standards are no longer as stringent as NFPA 13 is in the maximum size of a "system". NFPA 13 limits the size of a system to 52,000 sq ft (4,800 m2) per floor for light and ordinary hazard systems and 40,000 sq ft (3,700 m2) per floor for extra hazard and high-piled storage. But FM Global Data Sheet 2-0, "Installation Guidelines for Automatic Sprinklers",8 allows much more area per system. FM originally published their standards in March 2010 without any limitation to the size of a system. Then they changed their standard in January 2011 to a maximum system size of 60,000 sq ft (5,600 m2) (total, not per floor). It is possible that this requirement will change again in the future.
http://m.magazine.sfpe.org/sprinklers/challenges-f...
RE: System protection area limitations
RE: System protection area limitations
RE: System protection area limitations
RE: System protection area limitations
Knowing this I will size my systems by NFPA because the local fire code is based on it and have to meet both requirements.
Thanks again.
RE: System protection area limitations
Travis Mack
MFP Design, LLC
www.mfpdesign.com