Not the selection, but the description. In (#3) you are allowed 1-12. Not the four listed,especially the 24" Also, as you model proves, the affect of jet cooling out-weighs the spraying of a couch, The 60gpm will make that moot as well..
R/ Matt On Tue, Jul 15, 2014 at 11:05 AM, Brad Casterline <[email protected]> wrote: > Hmm Matt, I used (1), but then raised it to 3" above the bottom of beam in > accordance with Table 8.8.5.1.2. (2007) > Is that a mistake? > > Brad > > -----Original Message----- > From: Matthew Willis [mailto:[email protected]] > Sent: Tuesday, July 15, 2014 9:33 AM > To: [email protected] > Subject: Re: ECOH 20x20 OH1 Obstructed Construction > > *3.7.1* Obstructed Construction. *Panel construction and other > > construction where beams, trusses, or other members impede > > heat flow or water distribution in a manner that materially affects > the ability of sprinklers to control or suppress a fire. > > *A.3.7.1 Obstructed Construction. *The following are examples > > of obstructed construction. The definitions are provided to assist > > the user in determining the type of construction feature. > > (1) *Beam and Girder Construction*. The term *beam and girder construction* > > as used in this standard includes noncombustible > > and combustible roof or floor decks supported by wood > > beams of 4 in. (102 mm) or greater nominal thickness or > > concrete or steel beams spaced 3 ft to 71/2 ft (0.9mto 2.3 m) > > on center and either supported on or framed into girders. > > [Where supporting a wood plank deck, this includes semimill > > and panel construction, and where supporting (with > > steel framing) gypsum plank, steel deck, concrete, tile, or > > similar material, this includes much of the so-called noncombustible > > construction.] > > > > *8.8.4.1.2 Obstructed Construction. *Under obstructed construction, > > the sprinkler deflector shall be located in accordance > > with one of the following arrangements: > > (3) Installed in each bay of obstructed construction, with the > > deflectors located a minimum of 1 in. (25.4 mm) and a > > maximum of 12 in. (305 mm) below the ceiling. > > > R/ > > Matt > > _______________________________________________ > 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
