Why do you need to demonstrate the flow rate? The purpose of the forward flow test is to fully operate the back flow valve. A flow at 500 GPM will not open the valve fully?
On Jul 14, 2016 9:52 AM, "David Williams" <david.willi...@lhbcorp.com> wrote: > As an engineer who just issued a design with such a test header (COE > project where they “suggested” we look at this provision in the design). My > view is that the FDC is fine for project with less than 500 gpm flow > requirements. If over that (and in my case the flow was 1100 gpm), then we > need a test header so we can properly demonstrate the flow rate. > > > > *David Toshio Williams, FPE, LEED-AP O+M* > > *(218) 279-2436 <%28218%29%20279-2436> direct | (218) 310-2446 > <%28218%29%20310-2446> cell * > > *LHB, Inc. | PERFORMANCE **DRIVEN **DESIGN* > > > > > > *From:* Sprinklerforum [mailto: > sprinklerforum-boun...@lists.firesprinkler.org] *On Behalf Of *Todd > Williams > *Sent:* Thursday, July 14, 2016 8:16 AM > *To:* sprinklerforum@lists.firesprinkler.org > *Subject:* RE: Test header on riser > > > > We installed a by-pass on the FDC line for the forward flow test, but he > wants a test header as well. > > Todd G Williams, PE > > Fire Protection Design/Consulting > > Stonington, CT > > 860-535-2080 (ofc) > > 860-608-4559 (cell) > > > > Sent using CloudMagic > <https://cloudmagic.com/k/d/mailapp?ct=ti&cv=6.0.64&pv=8.2> > > > > On Thu, Jul 14, 2016 at 8:58 AM, Ryan Labrie < > rlab...@criticalsystemsolutions.com> wrote: > > I have installed a test header on a riser to do a flow test of a backflow, > take a look at NFPA #13 2010 10.10.2.5 > > > > *Ryan Labrie* > > Fire Protection Designer > > > > > *Critical System Solutions, LLC *2830 Scherer Drive, Suite 300 > St. Petersburg, FL 33716 > Office: 727.209.5122 > > Fax: 727.209.5126 > > Cell: 813.394.3978 > > Email: rlab...@criticalsystemsolutions.com > > > > [image: CSS Logo] > > > > *From:* Sprinklerforum [ > mailto:sprinklerforum-boun...@lists.firesprinkler.org > <sprinklerforum-boun...@lists.firesprinkler.org>] *On Behalf Of *Michael > Hill > *Sent:* Thursday, July 14, 2016 8:55 AM > *To:* sprinklerforum@lists.firesprinkler.org > *Subject:* RE: Test header on riser > > > > Have not heard of this before. Perhaps he wants to do forward flow test > for backflow preventer? > > > > Mike Hill > > > > *From:* Sprinklerforum [ > mailto:sprinklerforum-boun...@lists.firesprinkler.org > <sprinklerforum-boun...@lists.firesprinkler.org>] *On Behalf Of *Todd > Williams > *Sent:* Thursday, July 14, 2016 8:41 AM > *To:* sprinklerforum@lists.firesprinkler.org > *Subject:* Test header on riser > > > > Is there any requirement to install a test header on a riser without a > pump (In addition to arrangement for full flow FDC test)? I have an > engineer insisting that it is. When I asked for referenced, I get the "you > look it up" response. Just want to be sure before I scream back > > Todd G Williams, PE > > Fire Protection Design/Consulting > > Stonington, CT > > 860-535-2080 (ofc) > > 860-608-4559 (cell) > > > > Sent using CloudMagic > <https://cloudmagic.com/k/d/mailapp?ct=ti&cv=6.0.64&pv=8.2> > > > > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > >
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