Obviously I'm talking about the concealed space above the dropped ceiling.
On Thu, Mar 16, 2017 at 1:57 PM, <[email protected]> wrote: > A corridor is not a concealed space. Is the rest of the area around the > corridor sprinklered? What does this corridor serve? Is it for egress? > > > > > *Craig L. Prahl* > Fire Protection Group Lead/SME > *CH2M* > 200 Verdae Blvd. > Greenville, SC 29607 > Direct - 864.920.7540 <(864)%20920-7540> > > Fax - 864.920.7129 <(864)%20920-7129> > > CH2MHILL Extension 77540 > [email protected] > > > > *From:* Sprinklerforum [mailto:[email protected]. > org] *On Behalf Of *Mick Dugal > *Sent:* Thursday, March 16, 2017 4:42 PM > *To:* [email protected] > *Subject:* Concealed Combustible Spaces with Gyp Bd? [EXTERNAL] > > > > Would a wood framed corridor rocked with 2 layers of 5/8" gyp bd (a UL > listed assembly) and a dropped acoustical grid ceiling still require > sprinklers? Would NFPA 13 :8.15.1.2.10 permit the exclusion of sprinklers > from such a space? > > > > > > 8.15.1.2.10 Concealed spaces where rigid materials are used and the > exposed surfaces have a flame spread index of 25 or less, and the materials > have been demonstrated not to propagate fire more than 10.5 ft (3.2 m) when > tested in accordance with ASTM E 84, Standard Test Method of Surface > Burning Characteristics of Building Materials, or ANSI/UL 723, Standard for > Test for Surface Burning Characteristics of Building Materials, extended > for an additional 20 minutes in the form in which they are installed, shall > not require sprinkler protection. > > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > >
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