I would recommend you check with the local fire authority having jurisdiction regarding any reductions. The Building Code permits closely spaced sprinklers with a draft curtain in lieu of a fire-rated shaft to protect vertical openings. Since it's used as an exception, I would not think the local AHJ would allow reductions in your design. Just something to think about ...
Galen Taylor County of Los Angeles Fire Department Fire Prevention Engineering 323-890-4339 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Tuesday, April 01, 2014 9:07 AM To: [email protected] Subject: Re: quick response area reduction with vertical openings I would say yes and no. It all depends on your selection of a design basis. The area below the opening has a tall ceiling so that PORTION of the building has a design basis that is not reduced. The remainder of the building can use its own design basis that includes the reduction or follow the other. Naturally we are assuming the entire building is a single occupancy hazard classification. Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org On Apr 1, 2014, at 8:33 AM, Matt Grise <[email protected]> wrote: > I am looking at a building that has 12' ceilings (per floor). In one area > there is a vertical opening to the second floor that is protected with > closely spaced sprinklers and draft stops. Is it still acceptable to use the > quick response area reduction or does the opening to the second floor count > as a ceiling in excess of 20'? > > If it is acceptable to use the quick response reduction, can you apply the > reduction to the length of closely spaced sprinkler heads that must be calc'd? > > Matt Grisé PE*, LEED AP, NICET II > 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 > > > _______________________________________________ > 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 list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
