It is 4" total thickness on 1" non-composite metal deck. On Mon, Nov 21, 2011 at 1:50 PM, Matt Grise <[email protected]> wrote: > How thick is the concrete? > > Matt Grisé PE*, LEED AP > Sales Engineer > Alliance Fire Protection > 130 w 9th Ave. > North Kansas City, MO 64116 > > *Licensed in KS & MO > > 913.888.0647 ph > 913.888.0618 f > 913.927.0222 cell > www. AFPsprink.com > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Daniel Adams > Sent: Monday, November 21, 2011 2:48 PM > To: [email protected] > Subject: Hanger question (NFPA 13, 2007 edition) > > On a current government project, piping has been hung from a concrete > filled metal deck using expansion shells (drop-in). After giving the > okay to use this type of hanger, an inspector has referenced : > "9.2.1.4.1 Metal Deck. 9.2.1.4.1 * Branch line hangers attached to > metal deck shall be permitted only for the support of pipe 1 in. (25 > mm) or smaller in size, by drilling or punching the vertical portion > of the metal deck and using through bolts." and in Annex A, it says > that "A.9.2.1.4.1 The requirements of 9.2.1.4.1 are based on metal > decks only but can be applied to other applications such as concrete > or gypsum-filled metal decks". > > In 9.1.3 Fasteners in Concrete, it notes that "Unless prohibited by > 9.1.3.2 or 9.1.3.3, the use of listed inserts set in concrete and > listed post-installed anchors to support hangers shall be permitted > for mains and branch lines. > 9.1.3.2 Post-installed anchors shall not be used in cinder concrete, > except for branch lines where the post-installed anchors are > alternated with through-bolts or hangers attached to beams. > 9.1.3.3 Post-installed anchors shall not be used in ceilings of gypsum > or other similar soft material. > > The expansion shells are in the concrete portion of the deck (the > metal decking has been drilled to permit the expansion shells to be > inserted into the concrete). Doesn't this comply with 9.1.3 ? > > Daniel N. Adams > Designer > > Interwest Fire Protection, Inc. > 404 Ironwood Drive > Salt Lake City, UT 84115 > > Phone: (801) 746-4040 > Fax: (801) 746-4043 > [email protected] > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
-- Daniel N. Adams Designer Interwest Fire Protection, Inc. 404 Ironwood Drive Salt Lake City, UT 84115 Phone: (801) 746-4040 Fax: (801) 746-4043 [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
