Thanks Roland and Steve. It's good to have a reality check once in a while. This great forum serves many purposes and reality check is one of them.
Ed Kramer Lawrence, KS -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Friday, January 17, 2014 10:09 AM To: [email protected] Subject: Re: Glass & room design the number of layers is for a single membrane (aka one side of the studs). Although logic could lead one to say having an non-rated door is no different than a non-rated window, 13 specific allows the door. There's a significant difference, though, between glass and wood and how they react to fire (and thermal shock when the sprinkler goes off). 11.2.3.3.5(2) explicits tells us how to address unprotected openings. Full steam ahead. Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org On Jan 16, 2014, at 2:01 PM, Ed Kramer <[email protected]> wrote: > In this particular case (and is often the case) the wall is not a > rated assembly. But that's OK, because 11.2.3.3.3 doesn't require it > to be a rated assembly, just to have a 30 minute fire-resistance > rating (light hazard). This wall has 5/8" type X gyp on both sides. > Per the National Gypsum website, 2 layers of 5/8 type X (1 on each > side) give a fire-resistance rating of 1 hour. _______________________________________________ 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
