I seem to remember it being 3 feet below the roof for an exhaust duct as well. I looked back through all my older editions of NFPA 13 and could not find it though. I must have seen it in a local ordinance or something. Did some net surfin and this is the best I could come up with from Lincoln Fire Dept. in CA (see Chapter 13.4,3.B ). It looks like their ammendment to the 2002-NFPA 13 sec. 13.4 It calls for the head to be located in the exhaust duct 6" above the roof line. http://www.ci.lincoln.ca.us/pagedownloads/Fire%20Sprinkler%20Systems.pdf
Chuck Hamilton Pacific Fire Suppression, Inc. 1642 So. Clementine St. Anaheim, CA 92802 Ph. 714-502-0211 ext. 102 Fax 714-502-0214 e-mail: [email protected] -----Original Message----- From: A.P.Silva [mailto:[email protected]] Sent: Tuesday, January 11, 2011 10:34 AM To: [email protected] Subject: RE: sprinklers in duct Intake plenum? Do you mean exhaust plenum? Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of George Medina Jr Sent: January 10, 2011 6:53 PM To: [email protected] Subject: Re: sprinklers in duct I had to flow heads in the pit, intake plenum, exhaust duct, etc. except the mixing room when i used to design the spray booths for Blowtherm. That's what the A.H.J. usually required. I was able to get a compromise with them allowing me to use different orifice sizes in different areas of the booth so as not to have to install a 6" riser for all the overage. George Medina Jr. Monterey Park, Ca -----Original Message----- From: Ron Greenman <[email protected]> To: sprinklerforum <[email protected]> Sent: Mon, Jan 10, 2011 2:05 pm Subject: Re: sprinklers in duct The duct or the spray booth? just figure all. On Mon, Jan 10, 2011 at 1:46 PM, Todd Williams <[email protected]> wrote: OK, but there are two items that I have heard of, but can't find a reference for: 1) the requirement for a sprinkler within 3 ft of the duct passing to the outside, and 2) using pendent sprinklers in the vertical position on vertical runs of duct. Also, there is the nebulous statement "the water supply shall be sufficient to supply all sprinklers likely to open in any one fire incident..." How does one go about determining the number of sprinklers likely to open that would be reasonable and satisfy the AHJ as well as the attorney for the plaintiff? At 03:49 PM 1/10/2011, you wrote: > > Or chapter 21 in NFPA 13 > > Teresa M. King, S.E.T. > Design Manager > Front Range Fire Protection, Inc. > 4007 S. Lincoln Avenue, Suite 460 > Loveland, CO 80537 > ph. (970) 663-3310 > fax (970) 663-7331 > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Dale > Wingard > Sent: Monday, January 10, 2011 1:44 PM > To: [email protected] > Subject: RE: sprinklers in duct > > Try NFPA 33. It is for Spray Application Using Flammables. > > Dale F. Wingard, SET > Design Manager > Triple "A" Fire Protection, Inc. > 251.649.2034 > [email protected] > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Todd > Williams > Sent: Monday, January 10, 2011 2:38 PM > To: [email protected] > Subject: sprinklers in duct > > I am doing a system for a spray booth and the associated exhaust > ducts. I can't seem to find the section of the NFPA standards that > references this. NFPA 91 says provide sprinkler protection without any > further guidance. NFPA 13 chapter 7 talks about cooking equipment and > it's ductwork, but doesn't give many specifics. Seems to me there is > something about having sprinklers within 3 ft of where the duct exits > the building, but I can't find it. Anybody know where this stuff is > off the top of their head? > > Todd G. Williams, PE > Fire Protection Design/Consulting > Stonington, CT > 860.535.2080 > www.fpdc.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) > _______________________________________________ > 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) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.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) -- on Greenman nstructor ire Protection Engineering Technology ates Technical College 101 So. Yakima Ave. acoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 53.576.9700 (cell) Member: FSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis acon, essayist, philosopher, and statesman (1561-1626) ______________________________________________ prinklerforum mailing list [email protected] ttp://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)
