Which suggests that some adjustment for elevation might be necessary when the test point and the connection point are different.
On Wed, May 17, 2017 at 5:53 AM, Taylor Schumacher <[email protected]> wrote: > The characteristics of the water supply would be the same at the point of > connection as the test hydrant assuming elevation is the same, right? The > AHJ quoted the same section and is stating that the characteristics are not > the same at the point of connection. > > > > I did order the book Steve has suggested. We’ll see if that sways either > of our interpretations. > > > > NFPA 13 (2010) - *22.4.1.5 *Hydraulic calculations shall extend to the > effective point of the water supply where the characteristics of the water > supply are known. > > > > *TAYLOR SCHUMACHER, CET* > > Security Fire Sprinkler > > *P* 320.656.0847 <(320)%20656-0847> | *F* 320.656.0312 > <(320)%20656-0312> | *E* [email protected] > > > > *From:* Sprinklerforum [mailto:[email protected]. > org] *On Behalf Of *Eric V. Tysinger > *Sent:* Wednesday, May 17, 2017 7:31 AM > > *To:* [email protected] > *Subject:* RE: Circulating Fire Main Calculations > > > > NFPA 13, 2010, section 22.4.1.5 also states hydraulic calcs shall extend > to the effective point of the water supply…. > > > > It doesn’t really address where that “effective point” is or should be, > but it backs up what Steve and Travis said. > > > > > > *Eric V. Tysinger * > Designer > Wiginton Fire Systems - Miami, FL > > Email: [email protected] > Main: 305-888-2402 <(305)%20888-2402> > Direct: 305-830-0490 <(305)%20830-0490> > Fax: 305-888-3804 <(305)%20888-3804> > Mobile: 239-633-9703 <(239)%20633-9703> > > > > > > > Confidentiality Notice: > This e-mail message, including any attachments, is for the sole use of the > intended recipients and may contain confidential and privileged > information. Any unauthorized review, use, disclosure or distribution is > prohibited. If you are not the intended recipient, please contact the > sender by reply e-mail and destroy all copies of the original message. > > *From:* Sprinklerforum [mailto:[email protected]. > org <[email protected]>] *On Behalf Of *Steve > Leyton > *Sent:* Tuesday, May 16, 2017 5:46 PM > *To:* [email protected] > *Subject:* RE: Circulating Fire Main Calculations > > > > And to drive that home, I would refer interested users of the standards to > the book, “Sprinkler Hydraulics” by Harold Waas, Jr. In the chapter > titled, “Relating Hydraulic Calculations to the Water Supply”, Waas > discusses and offers diagrams on the “effective point of a hydrant flow > test”. There’s a very helpful figure on Page 61 of the first edition. > > > > Steve L. > > Geekin’ Like Cecil > > > > *From:* Sprinklerforum [mailto:[email protected]. > org <[email protected]>] *On Behalf Of *Travis > Mack, SET > *Sent:* Monday, May 15, 2017 6:38 PM > *To:* [email protected] > *Subject:* Re: Circulating Fire Main Calculations > > > > As long as you have a circulating main, I just always use the point of > connection to the circulating main as the source point. > > Travis Mack, SET > > MFP Design, LLC > > 2508 E Lodgepole Drive > > Gilbert, AZ 85298 > > 480-505-9271 <(480)%20505-9271> > > fax: 866-430-6107 <(866)%20430-6107> > > email:[email protected] > > > > http://www.mfpdesign.com > > https://www.facebook.com/pages/MFP-Design-LLC/92218417692 > > Send large files to us via: https://www.hightail.com/u/MFPDesign > > LinkedIn: https://www.linkedin.com/in/travismack > > On 5/15/2017 3:17 PM, Taylor Schumacher wrote: > > When calculating through the fire main supply line to the city water main > in the street. Is it necessary to calculate back to the test hydrant if the > city water main is a circulating main? Or, does NFPA allow calculating to > the point where the fire line connects to the city water main? > > > > *TAYLOR SCHUMACHER, CET* > > Security Fire Sprinkler > > *P *320.656.0847 <(320)%20656-0847> | *F * 320.656.0312 > <(320)%20656-0312> | * E *[email protected] > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > > > ------------------------------ > > [image: AVG logo] <http://www.avg.com/internet-security> > > This email has been checked for viruses by AVG antivirus software. > www.avg.com <http://www.avg.com/internet-security> > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > > -- Ron Greenman [email protected] 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-)
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