I don't know. If someone drove the little submarine into the joust bay there'd be exposed wood and some could die.
On Mon, Mar 20, 2017 at 11:03 AM Parsley Consulting < [email protected]> wrote: > According to one source > <http://sfm.dps.louisiana.gov/doc_flamespread.html> I looked over, Gypsum > wallboard has a flame spread rating of 10-15, and gypsum sheathing has a > flame spread rating of 15-20, both of which are below the magic NFPA 13 > number of 25. According to a tech data sheet from Dunn Edwards paints > <https://de-production-media.s3.amazonaws.com/uploads/techinal_bulletins/54ac433b6137650002090000/TechSheet_flameSpreadRatings.pdf>, > gypsum board is rated as a Class A rated material which would have a flame > spread of from 0 - 25, so it apparently doesn't exceed the maximum allowed > by -13. > > *Ken Wagoner, SET Parsley Consulting* > > > > * 350 West 9th Avenue, Suite 206 Escondido, California 92025 Phone > 760-745-6181 Visit our website <http://www.parsleyconsulting.com/> * > On 03/20/2017 10:37 AM, Mick Dugal wrote: > > Right, but then it directs you to the exceptions: > 8.15.1.2.1* Concealed spaces of noncombustible and limited-combustible > construction with minimal combustible loading having no access shall not > require sprinkler protection > > I would think the above code applies but does adding 2 layers of 5/8" > drywall make wood framing noncombustible *construction*? > > If not, then I wonder about: > > 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. > > > On Mon, Mar 20, 2017 at 10:32 AM, Roland Huggins < > [email protected]> wrote: > > Start with the opening paragraph 8.15.1.1 where it states - EXPOSED > combustible construction shall be protected > > > Roland Huggins, PE - Senior VP Engineering > > American Fire Sprinkler Assn. > > Dallas, TX > > http://www.firesprinkler.org > > > Fire Sprinklers Saves Lives > > > > > On Mar 16, 2017, at 1:42 PM, Mick Dugal <[email protected]> > wrote: > > 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 > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > > _______________________________________________ > Sprinklerforum mailing > [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 > -- Sent from Gmail Mobile
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