A 1'-0" gap on both sides is pretty large. I would think that the heat would end up going past any sprinklers in the ceiling (in most cases) and would need to fill the space above the ceiling before you had a sprinkler activation. For this delayed activation alone, I would put heads above and below (and have done so on several occasions). I look at it as a floating ceiling.
I do agree that the code is a bit unclear on this. I have in the past, argued both sides of this. Mike Hill -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rod DiBona Sent: Tuesday, June 05, 2012 1:18 PM To: [email protected] Subject: corridor ceiling NFPA 2010 is the applicable standard. Drop in ceiling down the corridor on all four floors of a new construction office building. Non combustible 4' vertical space above. Ceiling leaves a gap and doesn't connect to the wall on either side of the corridor. The gap is 1'0 on both sides. Trying to figure out if sprinklers are required above. I don't see any part of the standard that clearly addresses this. The closest I can see is the following: 8.15.1.2.1*<http://codesonline.nfpa.org/a/c.ref/ID00001330400/sec> Concealed spaces of noncombustible and limited-combustible construction with minimal combustible loading having no access shall not require sprinkler protection. 8.15.1.2.1.1 The space shall be considered a concealed space even with small openings such as those used as return air for a plenum. Do you think that this situation would classify as a concealed space? Do you think this space requires sprinklers above the ceiling? AHJ statement is to do it per code. Thanks for any input. [Description: LOGO_10] Rod DiBona Vice President Rapid Fire Protection office : (605)348-2342 fax : (605)348-0108 cell : (605)391-3553 www.rapidfireinc.com<http://www.rapidfireinc.com> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachment s/20120605/7265eaa1/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.jpg Type: image/jpeg Size: 6561 bytes Desc: image001.jpg URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachment s/20120605/7265eaa1/attachment.jpg> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
