COE wants the RPZ and/or DCCV to be forward tested at full flow of the system. How does one know whether you have achieved that , and more importantly where do you put all that water unless you have enough throughput to the exterior or a drainage area without either using the FD connection “backwards” or a test header arrangement.
David Toshio Williams, FPE, LEED-AP O+M (218) 279-2436 direct | (218) 310-2446 cell LHB, Inc. | PERFORMANCE DRIVEN DESIGN From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Forest Wilson Sent: Thursday, July 14, 2016 1:59 PM To: sprinklerforum@lists.firesprinkler.org Subject: RE: Test header on riser 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<mailto: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<tel:%28218%29%20279-2436> direct | (218) 310-2446<tel:%28218%29%20310-2446> cell LHB, Inc. | PERFORMANCE DRIVEN DESIGN From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>] On Behalf Of Todd Williams Sent: Thursday, July 14, 2016 8:16 AM To: sprinklerforum@lists.firesprinkler.org<mailto: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<tel:860-535-2080> (ofc) 860-608-4559<tel: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<mailto: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<tel:727.209.5122> Fax: 727.209.5126<tel:727.209.5126> Cell: 813.394.3978<tel:813.394.3978> Email: rlab...@criticalsystemsolutions.com<mailto:rlab...@criticalsystemsolutions.com> [CSS Logo] From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Michael Hill Sent: Thursday, July 14, 2016 8:55 AM To: sprinklerforum@lists.firesprinkler.org<mailto: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] On Behalf Of Todd Williams Sent: Thursday, July 14, 2016 8:41 AM To: sprinklerforum@lists.firesprinkler.org<mailto: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<tel:860-535-2080> (ofc) 860-608-4559<tel: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<mailto:Sprinklerforum@lists.firesprinkler.org> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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