we are in complete agreement on you latest statement (below). In your originally question though, weren’t you questioning whether or not ch 11 applied to a single joist channel or multiple channels. In other words, you were asking if the AHJ was wrong in requiring every 4th channel to be firestopped. The only one that doesn’t occasionally go left instead of right are those that don’t do anything. Good question.
On a related note, the firestopping should run parallel to the joists verse being perpendicular to them (provided a single channels isn’t greater than 160 cu ft. IF they are firestopping i required for BOTH parallel and perpendicular. Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> > On Oct 22, 2015, at 11:55 AM, James Crawford <jcrawf...@phaserfire.ca> wrote: > > Thanks Roland > > But my coffee has not kicked in, So I agree with 8.15.1.2.6 allows the > omission of the sprinkler heads as we meet those requirements, and > 11.2.3.1.4(4)(j) allows us to not use a 3000 sf design area if we firestop > the joist channels into 160 cu ft blocks, or in our case about every fourth > joist channel and the firestop material needs to be 1/2" gypsum or equal > > > Thank you > > > James Crawford _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
