712.4.1.2 Membrane penetrations. Penetrations of membranes that are part of a fire-resistance-rated horizontal assembly shall comply with Section 712.4.1.1.1 or 712.4.1.1.2. Where floor/ceiling assemblies are required to have a minimum 1-hour fire-resistance rating, recessed fixtures shall be installed such that the required fire resistance will not be reduced. Exceptions: 4. The annular space created by the penetration of a fire sprinkler, provided it is covered by a metal escutcheon plate.
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 Dewayne Martinez Sent: Wednesday, March 17, 2010 11:13 AM To: [email protected] Subject: Through wall penetration with sprinkler heads We have a situation that has been talked about in the past but I can't remember what was resolved. Back to back sprinkler heads in a double 2X4 fire rated wall. The exception in the IBC 712.3.2 #3 deals with membrane penetrations and sprinkler escutcheon. What happens when you have a through penetration such as B/B sprinklers? There is no exception in section 712.3.1 of the IBC for sprinkler escutcheons in through penetrations and the manufacture states that you cannot fire caulk a sprinkler escutcheon. Would we need to use the donk style sprinkler esch and fire caulk around the pipe? Thanks, Dewayne Martinez Design Build Fire Protection New Berlin, WI <http://www.designbuildfire.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)
