>From a trusted industry source (at least I trust him or her!): The two drawings that the NFSA provided had slight differences. Mr. McMahon nailed it. The second sketch should show the wall at the window build-out as going from overhead soffit all the way to the floor. This would create additional floor space and the coverage area of the sprinkler should be increased to include distance back to the wall the window is in.
This change was submitted because NFSA gets tons of questions from AHJ's about measuring the coverage for sidewalls. Tony made a good catch on an error in the sketches (but I still think he was drinking). And Thom got the intention exactly right! Now you guys get back to work and "sprinkler the world"! -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of George Church Sent: Thursday, September 11, 2008 8:17 AM To: [email protected] Subject: RE: [Suspected Spam]RE: Bay Window Tony, you're on the AFSA Forum. AFSA offers informal interpretations to members, and the NFSA has a similar offering by their Expert of the Day for their members. Perhaps we'll be enlightened by an industry source before the day is out. Dude? glc -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of A.P.Silva Sent: Thursday, September 11, 2008 1:21 AM To: [email protected] Subject: RE: [Suspected Spam]RE: Bay Window Re. reply to first question: Yes, but aren't both figures the same. Doesn't show you when to measure up to the glass. Both figures shown don't create additional floor space. I think the second figure is not correct. The figures are courtsey of NFSA. Can someone from NFSA comment? Tony -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: September 10, 2008 4:17 PM To: [email protected] Subject: [Suspected Spam]RE: Bay Window The top two fig. measure the head spacing to the "WALL" the lower two Fig's measure the head spacing to the "Window Glass" for bay windows that create floor space. Your example does not create floor space so you measure to the wall. The concealed combustible space under the window should be filled with non- combustible insulation, to avoid having to provide sprinkler protection in this area.(8.15.1.2.7) The 160FT3 you refer to is for ceilings of combustible construction above dry wall. (8.15.1.2.6 or 8.15.1.2.8) Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of A.P.Silva Sent: Wednesday, September 10, 2008 2:48 PM To: [email protected] Subject: Bay Window NFPA 13, 2007; section 8.5.3.2.4 Exhibit 8.8 shows two diagrams. One for "no floor area" and the other "with floor area". Both diagrams appear to be the same. Am I drunk or is one diagram incorrect? Another question. A school with classrooms having bay windows, similar to exhibit 8.8, except there is a combustible concealed space forming part of the wall below the window. __________________ <--- CEILING I I I I I I <--- WALL I I I I__________ I__________ I I II I II <--- WINDOW I II I II __________I I I I I I I I I <---I------- COMBUSTIBLE CONCEALED SPACE I____________I This concealed space is 12 feet long 3 feet wide and 3 feet deep. The Fire Marshall is asking for sprinklers in this combustible concealed space. My thoughts are it is less than 160 cubic feet, so should not need sprinklers. However, I don't see a code section relating specifically to this situation. Any comments? Tony _______________________________________________ Sprinklerforum mailing list http://lists.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 http://lists.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 http://lists.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 http://lists.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 http://lists.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)
