If I remember correctly, the "old timers" on the committee stated that all the fire tests done for 231 series of standards were done with flat ceilings. No test data was available to indicate how the results of the test would have been under a sloped ceiling. The committee was concerned and inserted the no slope requirement.
John John August Denhardt, P.E., FSFPE Strickland Fire Protection Incorporated 5113 Berwyn Road College Park, Maryland 20740 Office Telephone Number: 301-474-1136 Mobile Telephone Number: 301-343-1457 FIRE SPRINKLERS SAVE LIVES - Can you live without them? -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Wednesday, February 05, 2014 3:08 PM To: [email protected] Subject: Re: Ceiling Slope Limit for Storage It first appeared in the 1999 ed of 13 (the edition that incorporated the storage standards). I ever so vaguely remember it. I believe it was just not realized prior to that and the starting point of the discussion was that these fire (especially racks) are much more challenging with a very rapid growth and all the criteria testing was with a flat ceiling. There was no real data indicating the ability to control these challenging fires with a sloped ceiling and we arrived at the current criteria. Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org On Feb 4, 2014, at 3:36 PM, Gregg Fontes <[email protected]> wrote: > Could someone verify that I am correct in thinking that the 2:12 slope > ceiling limit for storage above 12'-0 was first stated in the 1999 Edition of > NFPA 13 and was not in NFPA 231 or 231C? > > Thanks, > Gregg Fontes _______________________________________________ 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
