Ron, I found this from an old NFSA post. "For NFPA 13D and NFPA 13R, the rules are much simpler and are based on a research program conducted by the NFSA in residential occupancies. The NFSA research program consisted of computer fire modeling, water distribution tests, sprinkler response tests and full-scale fire tests both with still fans and with fans running. After reviewing all of the data, the committee responsible for NFPA 13D and NFPA 13R wrote the following simple rules: * For pendent sprinklers, keep the sprinkler at least 3 ft from the center of the fan (not the near edge). * For sidewall sprinklers, keep the sprinkler at least 5 ft from the center of the fan (not the near edge)."
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ron Greenman Sent: Monday, April 11, 2011 9:30 PM To: [email protected] Subject: Re: NFPA 13(07) vs 13R(07) I was hoping foe an answer to this myself. I'm guessing it's just an anomaly between two different committees but your guess might also be right. On Mon, Apr 11, 2011 at 1:45 PM, Dewayne Martinez <[email protected]> wrote: > I am a bit confused when looking over the rules for ceiling fans and > residential sprinklers. > NFPA 13 section 8.10.7.2.1.7 allows the blades of the fan to be > ignored for Res HSW sprinklers while NFPA 13R section 6.8.1.5.3.3 (A) > requires that the Res HSW sprinklers be at least 5ft away from a > ceiling fan. > Why would this be different for the same type of sprinkler? Is is > because 13 requires 0.10 gpm/sqft vs 13R 0.05 gpm/sqft? > Thanks, > Dewayne Martinez > Design Build Fire Protection > New Berlin, WI > <http://www.designbuildfire.com/> > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
