That doesn't sound legit - I would keep the tee in the calculations. A bushing isn't really recognized as a fitting per table 23.4.3.1.1 - more like a transient fitting.
On Tue, Feb 4, 2020 at 1:22 PM Kyle.Montgomery via Sprinklerforum < [email protected]> wrote: > Esteemed members of the fire sprinkler community, > > > > NFPA 13 (2016 Edition) section 8.15.20 is basically telling us to provide > bushed 1” outlets for sprinklers in shell spaces, right? > > > > Section 23.4.4.8.1(9) tells us that friction loss can be excluded for the > fitting directly connected to a sprinkler. > > > > In your opinion(s), is it the intent of the standard that you have to add > the friction loss for a tee into your hydraulic calculation if using > bushings, since the sprinkler is no longer directly connected to the tee? > Or is it acceptable to consider a tee with a bushing as one fitting for the > purpose of hydraulic calculations. > > > > *Kyle Montgomery* > > [image: cid:[email protected]] > > *Aero Automatic Sprinkler Co.* > > *21605 N. Central Ave.* > > *Phoenix, AZ 85024* > > *Direct: 623.580.7820* > > *Cell: 602.763.4736* > > [email protected] > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >
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