More stringent rules, though simpler and easier to understand, to simplify the design (i.e.: pipe schedules versus calcs--dollars traded for simplicity) makes sense in keeping with the philosophy of both 13D & 13R. Thanks George.
On Tue, Apr 12, 2011 at 7:17 AM, George Church <[email protected]> wrote: > That certainly does simplify things, like the 3x and 4x rules- compared to > memorizing the beam rule for various distances and sprinkler types. > KISS, same concept FM applied to new DS. > (vrs KISS and I'll buy ya a drink) > > George Church > Rowe Sprinkler Systems, Inc. > PO Box 407, Middleburg, PA 17842 > 877-324-ROWE 570-837-6335 fax > [email protected] > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Dewayne > Martinez > Sent: Tuesday, April 12, 2011 8:06 AM > To: [email protected] > Subject: RE: NFPA 13(07) vs 13R(07) > > 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) > _______________________________________________ > 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)
