The code path is: A: this is not an extension (which is limited to LH & OH) so change paths
B: 8.15.20.5 supersedes the 1 inch limit (23.4.1.2) and allows a nipple up to 4 inches. It also states to include it in the calc. As you already stated, the huge pressure drop typically kills this for high flow heads. Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> > On Nov 9, 2016, at 1:14 PM, Matt Grise <[email protected]> wrote: > > I am looking at a warehouse space that needs to upgrade from K14 ESFR to K22. > Typically this would involve plugging the ¾” outlets and cutting in new 1” > mechanical T’s. > > I had someone ask why we could not use a ¾” brass nipple and a ¾” to 1” > reducer to up-size the outlet to hold a 1” head. I feel like this is not > allowed, but I could not find specifically where. It would not really be an > extension fitting. ¾” brass is allowed. Each change of size is done with a > single piece reducer. The ¾” tee and nipple would be included in the > calculations… > > Any help on where the code addresses this setup? > > Thanks! > > Matt Grisé PE*, LEED AP, NICET II > Vice President – New Construction > Alliance Fire Protection > 130 w 9th Ave. > North Kansas City, MO 64116 > > *Licensed in KS & MO > > 913.888.0647 ph > 913.888.0618 f > 913.526.7443 cell > www. AFPsprink.com <http://afpsprink.com/> > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > <mailto:[email protected]> > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > <http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org>
_______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
