If this is a framed wall with the piping entirely within the wall and only the sprinkler is penetrating one membrane (the Type X GWB) you really are not penetrating a fire barrier. This is similar to an electrical receptacle that openetrates one membrane in a framed wall, which is explicitly permitted by the NEC. This would be different if you ran a CPVC pipe into a rated elevator shaft or stair shaft that went entirely through the wall. In that case, you would typically need to provide the UL-listed, intumescent sleeve fire-stopping system.
I recall the NFSA rep at the ICC hearings addressing this issue and it was clarified in Chapter 7 of the IBC. Dave David A. de Vries, P.E., CSP Firetech Engineering Incorporated --- On Tue, 4/28/09, [email protected] <[email protected]> wrote: From: [email protected] <[email protected]> Subject: RE: Rating of the sprinkler escutcheon To: [email protected] Date: Tuesday, April 28, 2009, 10:33 AM And is that assuming that the pipe penetrating the membrane is of noncombustible materials? Any time you breach rated construction either the material penetrating has to be non-combustible or you provide a UL Listed , non-combustible sleeve assembly that is sealed at both ends. Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Johnson, Duane (NIH/OD/ORS) [C] Sent: Tuesday, April 28, 2009 11:28 AM To: [email protected] Subject: RE: Rating of the sprinkler escutcheon IBC 712.3.2 #3 provides an exception to penetration protection of 1-hr partion: The annular space created by the penetration of a fire sprinkler provided it is covered by a metal escutcheon plate. Duane Johnson, PE Program Manager Division of the Fire Marshal (Support Contractor) Office of Research Services National Institutes of Health 301-496-0487 -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Tuesday, April 28, 2009 11:07 AM To: [email protected] Subject: RE: Rating of the sprinkler escutcheon Not measurable. If the wall is to be 1hr rated construction, the fire stopping material for the penetration must provide equal. How would you measure the value of the sprinkler in relation to hours of equivalent resistance? Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Greg McGahan Sent: Tuesday, April 28, 2009 11:03 AM To: [email protected] Subject: RE: Rating of the sprinkler escutcheon What about the sprinkler itself? Doesn't it offer something of value at the point of penetration? Greg McGahan Operations Manager Living Water Fire Protection 1160 McKenzie Road P.O. Box 877 Cantonment, Florida 32533 (850) 937.1850 | Fax (850) 937.1852 | Cell (850) 554.3231 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Sal Izzo (TECH- 103) Sent: Tuesday, April 28, 2009 9:59 AM To: [email protected] Subject: RE: Rating of the sprinkler escutcheon I believe CPVC is considered a combustible penetration when running through a rated assembly and therefore would require a listed firestop assembly. Metal escutcheons provide no rating; the IBC permits only an escutcheon to cover the annular space of a sprinkler penetration when the pipe is noncombustible, i.e., steel, copper, conduit, etc. Regards, Salvatore Izzo, P.E. SFPE Manager - Reliable Technical Services ________________________________________ From: [email protected] [[email protected]] On Behalf Of Bobby Gillett [[email protected]] Sent: Tuesday, April 28, 2009 10:56 AM To: [email protected] Subject: Rating of the sprinkler escutcheon Our situations - we have a hotel designed to 13R that requires our cpvc piping to be run through a fire rated wall between two units with 4.0K residential semi-recessed sidewall heads spraying into both units. The other is the extended coverage 8.0K semi-recessed sprinkler spraying into the stairwell (also fed by cpvc from the corridor). The question being asked by the fire marshall - What is the fire rating of the escutcheons? Bobby Gillett Sr. Project Manager Key Fire Protection, Inc. (731) 424-0130 office (731) 424-9285 fax (731) 267-4853 cell <mailto:[email protected]> [email protected] _______________________________________________ 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) _______________________________________________ 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)
