Let me guess: he doesn't have an issue with sprinkler spray obstruction, but has an issue with heat flow getting to the sprinkler. Assuming that's the case, he may (or may not) have a point - your beams are 15" deep and heat would more likely flow parallel to the beams rather than cross under the beam & fuse the sprinkler. To my knowledge, 13 doesn't address that. Unless someone wants to do some fire modeling, it's all opinion and theory.
Ed Kramer Littleton, CO > -----Original Message----- > From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum- > boun...@firesprinkler.org] On Behalf Of Cliff Whitfield > Sent: Monday, February 08, 2010 4:02 PM > To: sprinklerforum@firesprinkler.org > Subject: RE: Beam obstruction rules > > Todd, > > There are no lights or fans or ducts that would create an issue. The > deflector is 6" below the deck so I only have 9" to worry about. I'm > trying > to not say exactly what this guy has said so that I can get other > opinions > before I influence anyone's answer. > > If anyone else wants to throw in their two cents, that would be great. > > Thanks, > Cliff > > -----Original Message----- > From: sprinklerforum-boun...@firesprinkler.org > [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Todd > Williams > Sent: Monday, February 08, 2010 3:59 PM > To: sprinklerforum@firesprinkler.org > Subject: Re: Beam obstruction rules > > How far down is the deflector from the deck? Any lights/ceiling fans > that could be in the way? > > > At 04:39 PM 2/8/2010, you wrote: > >Forum, > > > >I have a question regarding beam obstruction rules for standard spray > >uprights. > > > >I have a light hazard project that has 15" deep beams. The first beam > is > 9' > >from the wall and the next beam is 17' away from beam #1. If I space > my > >first head 5' away from beam #1 so that it is not an obstruction (per > table > >8.6.5.1.2-NFPA 13, 2007 ed), can my next head be 15' from head #1? > This is > >not supposed to be a trick question but I have a disagreement with an > FPE > on > >this. > > > >Thanks for your insight on this one. > > > >Cliff Whitfield, SET > >President > >Fire Design, Inc. > > > >cl...@fire-design.com > >www.fire-design.com > > > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@firesprinkler.org > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: supp...@firesprinkler.org > > To Unsubscribe, send an email to:Sprinklerforum- > requ...@firesprinkler.org > (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field)
