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
