Trevor: Read 6.3.6.1 and 6.4.3. These sections allow for the installation of pipe and fittings other than those listed in the NFPA 13 tables, long as they are installed, "... in accordance with their listing limitations, including installation instructions."
That language absolutely can and should be paraphrased as, "unless manufacturers data ..." Steve Leyton -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Trevor Spain Sent: Friday, September 23, 2011 12:07 PM To: [email protected] Subject: Re: "flow through tee's and Hydraulic calculations" "22.4.4.7 (5) Do not include fitting loss for straight-through flow in a tee or cross." Seems clear to me. It doesn't say " ... unless manufacturers data ... ". 13D does require inclusion of loss for straight-through flow. That's why the information is in cpvc and pex data sheets. Trevor Spain Igneus Incorporated On 9/23/2011 1:55 PM, Steve Leyton wrote: > I mean to say that if you peruse the manufacturer's data sheets for > products like CPVC and PEX they require it in very clear language. I > believe that the press-type fittings do as well. Not in every case - > Jamie alluded to the fitting chart in NFPA 13 for example. > > > Steve Leyton > > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Bob > Sent: Friday, September 23, 2011 11:45 AM > To: [email protected] > Subject: RE: "flow through tee's and Hydraulic calculations" > > I either misunderstand what is being said here, or my ignorance is about > to > show through, but I have never heard anyone say that "you absolutely > have to > include" a flow through tee in calculations regardless of type. 13 > 22.4.4.7(5) seems clear to me that you don't include this fitting > regardless > of schedule. Am I missing something? > > Thanks, > > Bob Knight, CET III > 208-318-3057 > www.firebyknight.com > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Steve > Leyton > Sent: Friday, September 23, 2011 12:13 PM > To: [email protected] > Subject: RE: "flow through tee's and Hydraulic calculations" > > Manufacturer's data sheets give the values and instruct on use - see > BlazeMaster design guide, for ex. Yes, you absolutely have to include > ... > > > Steve Leyton > > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Seidl > Jamie > D. > Sent: Friday, September 23, 2011 10:11 AM > To: [email protected] > Subject: "flow through tee's and Hydraulic calcultions" > > Hello forumites, I'd like to pole the forum and see what the consensus > is on > accounting for flow through tee's or "tee on the run" when calculating a > system. NFPA states that they do not need to be included when using the > schedule 40 fitting table. But when using manufactures' > fitting equivalents, do you include them? > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attach > ments/20110923/dfa2b426/attachment.html> > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
