2009 IBC, 603.1 discusses the use of combustible materials in Type I and II construction with Exceptions 1 and 2 dealing with foam plastics. Chapter 26 then relates foam installation to roof assemblies. Have you reviewed these sections to confirm your case meets one of the exceptions?
I'm assuming 2009 IBC applies, and not attempting to get into references to NFPA 101 or NFPA 5000. Bill Brooks William N. Brooks, P.E. Brooks Fire Protection Engineering Inc. 372 Wilett Drive Severna Park, MD 21146-1904 410-544-3620 410-544-3032 FAX 412-400-6528 Cell -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Chris Born Sent: Tuesday, October 09, 2012 5:51 PM To: sprinklerforum@firesprinkler.org Subject: Question about concealed spaces NFPA 13:8.15.1.2 (2010 edition) states that "Concealed spaces of noncombustible and limited-combustible construction with limited access and not permitting occupancy or storage of combustibles shall not require sprinkler protection." Consider a masonry building with a metal roof deck, but the deck is sprayed with a foam material that functions as an air barrier. The spray foam is exposed to view and doesn't meet the definition of limited-combustible at NFPA 13:3.3.13 because the potential heat value is greater than 3500 Btu/lb. The construction itself is noncombustible, but the surface exposed to view is combustible. I'm pretty comfortable that the intent of NFPA 13 is that this space would need to be sprinklered, but would welcome either concurrence with that thought or an explanation of where I've gone astray. The answer to this potentially drives whether or not a fire pump is required and obviously has cost implications. Thanks in advance for any opinions. Sincerely, Christopher H. Born, P.E. Director, Fire Protection Engineering Clark Nexsen, P.C. Norfolk, VA Sent from my iPad _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
