10-4 Todd thanks. We have out of town guests curious about how we do technical stuff here.
So I was just doing a sound check. On Oct 4, 2016 7:24 PM, "Todd Williams" <[email protected]> wrote: > Loud and clear in the upper right hand corner > > via Newton Mail > <https://cloudmagic.com/k/d/mailapp?ct=pi&cv=9.1.9&pv=10.0.2&source=email_footer_2> > > On Tue, Oct 4, 2016 at 8:22 PM, Brad Casterline <[email protected]> > wrote: > > I don't know if this Forum is working or not Russell. > Somtimes it goes on the blink. > I no longer take myself so seriously as to think I could cause a meltdown. > > I was hoping I'd have like 40 e-mails in my in-box about this by now. > > Mr. Leyton? Is this thing working tonight as far as you know? > > b-rad > On Oct 4, 2016 3:34 AM, "Brad Casterline" <[email protected]> wrote: > >> Russell, >> >> My understanding is we do not have to figure the loss for the fitting the >> sprinkler is in because when the K Factor was being established it was in a >> fitting. >> NFPA 13 (2016) 23.4.4.8.1 (9) confirms that. >> But it's a good question because we're supposed to use a manufacturer's >> published loss if they have one. >> So would it make sense to, if the published loss is greater, subtract the >> loss shown in 13, and include that difference? >> >> Brad >> On Oct 4, 2016 3:08 AM, "Russell & Carol Gregory" <[email protected]> >> wrote: >> >>> When calculating a Range Pipe with welded threaded outlets for >>> sprinklers it is not necessary to include a loss for the water leaving the >>> range pipe and entering the sprinkler. The total pressure is assumed to >>> apply to the sprinkler orfice. >>> >>> This means that a 80nb pipe with a 25nb outlet and a k36 sprinkler does >>> not have an additional loss added for the outlet fitting. >>> >>> If I change my design and fabricate the 80nb range pipe with 80 x 25 >>> Mechanical Tees for the Sprinkler outlet do I have to apply an additional >>> loss factor for that fitting? The published EQL for Mech tees varies >>> greatly between brands,( 0.8m up to 2.4m). This means a head pressure of >>> 345kPa would need around 600kPa in the range if this additional loss is >>> added. >>> >>> I would appreciate the Forum members advise as to what is the standard >>> practice in the USA, and whether the additional loss is to be included. >>> >>> Russell Gregory >>> >>> Christchurch >>> >>> New Zealand >>> >>> e-mail [email protected] >>> >>> >>> _______________________________________________ >>> 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 > >
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