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
