Depends! Is it over 6" deep from inside face to inside face? (See Fig 8.6.4.1.5.1 NFPA 13 2007 See 8.15.1.2.1 thru 8.15.1.2.16 and 8.15.6 NFPA 13 2007
The soffit itself may seem to be your problem, but your Area Density design will most likely increase in area due to the TJI construction. See 11.2.3.1.4 And note that TJI construction does not allow use of less than 3000 SF only solid wood joist const can meet some of the exclusions. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Pittman, Daniel Sent: Monday, January 24, 2011 1:48 PM To: [email protected] Subject: Combustible Concealed Spaces Where a combustible concealed space exist in a NFPA 13 occupancy where you have TGI construction with the sheet rock attached directly to the wood beams, protection of the concealed space is not required. But when you have a soffit area below the combustible concealed space mentioned above, constructed of combustible construction, does this area require protection? Daniel Pittman Estimator Sunland Fire Protection, Inc. 1218 Elon Place High Point, NC 27263 Office (336) 886-7027 Fax (336) 886-7024 [email protected] http://www.sunlandfire.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)
