Is it that obvious?
On Thu, Mar 16, 2017 at 2:25 PM, Mick Dugal <echofireproect...@gmail.com> wrote: > Obviously I'm talking about the concealed space above the dropped ceiling. > > > On Thu, Mar 16, 2017 at 1:57 PM, <craig.pr...@ch2m.com> 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 >> craig.pr...@ch2m.com >> >> >> >> *From:* Sprinklerforum [mailto:sprinklerforum-bounces >> @lists.firesprinkler.org] *On Behalf Of *Mick Dugal >> *Sent:* Thursday, March 16, 2017 4:42 PM >> *To:* sprinklerforum@lists.firesprinkler.org >> *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 >> Sprinklerforum@lists.firesprinkler.org >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum- >> firesprinkler.org >> >> > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > > -- Ron Greenman rongreen...@gmail.com 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-)
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