Can't top Steve, but... >From the handbook under 8.15.1.2.1.1: The presence of openings in the ceiling, such as those for return air for a plenum, does not result in a perfunctory requirement for sprinklers in the concealed space. Evaluation of the size and number of openings in relation to the overall area of the ceiling is important. Examples of openings to plenum spaces are shown in Exhibit 8.34.
Ironically, Exhibit 8.34 labeled "Two Examples of Plenum Openings." shows two pictures of drop ceilings where the handbook is indicating sprinklers are not required above merely because of access. In case you are wondering...purfunctory, synonymous for: superficial, careless, sketchy, offhand... Duane Johnson, PE Design Manager Strickland Fire Protection 5113 Berwyn Road College Park, MD 20740 301-474-1136 Office 301-455-0010 Cell -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Mark A. Sornsin, P.E. Sent: Tuesday, November 10, 2015 2:37 PM To: [email protected] Subject: RE: Noncombustible concealed space Ugh. I've seen this on this forum before. The AHJ is incorrect. Suspended ceiling tile is NOT the intent behind 'accessible'. How can the guy call it anything more than limited access? If this isn't limited access, what is? I think the archives have better support for this; or someone else will chime in shortly. Mark A. Sornsin, P.E. | Karges-Faulconbridge, Inc. | Fire Protection Engineer | Fargo, ND | direct: 701.552.9905 | mobile: 701.371.5759 | http://www.kfiengineers.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Marc Walter, SET Sent: Tuesday, November 10, 2015 1:31 PM To: [email protected] Subject: Noncombustible concealed space I have a 1,300SF tenant finish project in a building that is post tension concrete. The tenant is dropping in a T-Bar grid ceiling throughout the space. I have the existing piping dropping new pendents to the ceiling and removing the uprights. The AHJ has rejected the plans based on the removal of the uprights citing 8.15.1.2.1 and 8.15.1.2.2 (NFPA 13:2013). His contention is that a T-Bar ceiling is a fully accessible space, and therefore requires sprinkler protection above. Anyone been hit with this before? Marc Walter, SET Sprinkler Design Services 780 6th Avenue Seaside, OR 97138 (503) 956-4019 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
