The AHJ is telling the builder that if they had used conventional framing IE, 2"x12" @ 16 oc there would not be an issue. He says that the TJI's will burn faster than conventional framing therefore he wants them protected by dry wall, fire proofing or sprinklers.
Richard L. Mote Rowe Sprinkler Systems, Inc. 7994 Route 522, Suite 1 PO Box 407 Middleburg, PA 17842 P 570-837-7647 F 570-837-6335 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Sprinkler Design Services Sent: Thursday, December 05, 2013 3:35 PM To: [email protected] Subject: RE: NFPA 13D or 13? It seems like it would be massive overkill to design this per 13, so I'd do the design for 13D. It might be prudent to ask the AHJ for his opinion since he seems to modifying the rules at his fancy. Marc Walter, SET Sprinkler Design Services Seaside, OR 97138 (503) 956-4019 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Richard Mote Sent: Thursday, December 05, 2013 12:12 PM To: [email protected] Subject: NFPA 13D or 13? I guess I will have to show my ignorance, I can count on one hand the number of 13D systems I have designed in the last 10 years. This project is a 13D single family custom home with a basement of 2746 sq. ft. the AHJ is requiring that the basement be sprinklered, but he isn't requiring the rest of the house to have sprinklers. Since this would normally be part of a 13D system do I just do a 2 head calculation and call it done? Or do I calculate a 900 sq. ft. area, per 13. (It does meet all the criteria for area reduction) My thinking is that even though the basement could be protected per 13D if the entire house was covered, since this is a special requirement by the AHJ I should calculate per 13. BTW the 2007 codes are the applicable standards at this time. The owner is going to have to install tanks and a pump so the difference in demand is a big deal. Richard L. Mote CET Rowe Sprinkler Systems, Inc. 7994 Route 522, Suite 1 PO Box 407 Middleburg, PA 17842 P 570-837-7647 F 570-837-6335 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
