Ask the architect if he would rather have sprinklers above the ceiling or tile in the grid boundary area. Mark at Aero
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rod DiBona Sent: Tuesday, June 05, 2012 11:05 AM To: [email protected] Subject: RE: corridor ceiling Bob / Mike, Thank you for your thoughts. I certainly can see where it would make sense to have to cover above but at the same time I see the reference in 8.15.1.2.1.1 where small openings don't negate an area from being considered concealed. The example given is " such as those used as return air for a plenum"..... Any idea how large such an opening would be? -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bob Sent: Tuesday, June 05, 2012 11:28 AM To: [email protected] Subject: RE: corridor ceiling Mr DiBona, I hate to say yes, but I believe you will need heads above the ceiling. In essence what you have is an obstruction below the sprinklers at the roof deck. Because the ceiling is a floating cloud the heat can and most likely will roll past the edges of the cloud and cause havoc above the ceiling itself. This will most likely delay the operating of the lower sprinklers. The problem that I see is that this is not a concealed space since it is open on the sides. My two cents worth, Bob Knight, CET III 208-318-3057 www.firebyknight.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rod DiBona Sent: Tuesday, June 05, 2012 11:18 AM 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 ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2178 / Virus Database: 2433/5048 - Release Date: 06/05/12 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
