The commentary is discussing locating the pipe in the center of the hole, not the penetration. I think you have to meet 9.3.4.2, or use the couplings. 9.3.4.4 substantiates, as well as 9.3.4.9.?? The couplings would be best because of how much you would "rob" the structural integrity of the beam.
R/ Matt Matthew J. Willis, CET Automatic Fire Sprinklers Norred Fire Systems L.L.C. 318-387-1134 Voice 318-387-1163 Facsimile [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Friday, January 22, 2010 2:33 PM To: [email protected] Subject: beam penetrations & seismic. I ma working on a job where the engineer wants to run the mains through penetrations in steel beams. The question came up about clearance between the penetration and the pipe. Section 9.3.4 does not specifically address beams, but it is referenced in the handbook commentary under 9.3.4.1. Any thoughts on what minimum penetration size is required? Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut www.fpdc.com 860.535.2080 _______________________________________________ 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)
