I have never seen anything in NFPA 13 (I'll go out on a limb and say
there isn't anything). FM uses a 10 psi cushion. Maybe that's where
he came up with the number.
At 07:21 AM 5/29/2007, you wrote:
I have an AHJ requesting that I provide 10PSI (not 10%, I already
checked) safety factors on my hydraulic calculations. I asked him where
he came up with this number since they do not have a published fire
ordinance. He referred me to the appendix in 13 but will not specify a
specific section. Is there any such section pertaining to a safety
factor requirement that I am missing?
Thanks,
Dewayne Martinez
Design Build Fire Protection
[EMAIL PROTECTED]
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
860-535-2080
www.fpdc.com
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