I think it could be more simple than that. In AutoSprink, we still draw to the “effective point” and then draw pipe vertically or horizontally to adjust for that elevation from the test hydrant. In HydraCalc, we just input the elevation from the test hydrant.
Thanks, Taylor Schumacher Security Fire Sprinkler<http://www.j-berd.com/> 1 Industrial Blvd | Sauk Rapids, MN 56379 Office: 320.640.7050 | Cell: 605.212.2132 From: Fpdcdesign <[email protected]> Sent: Friday, April 11, 2025 10:30 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Cc: Steve Leyton <[email protected]> Subject: [Sprinklerforum] Re: Effective point of a flow test. Taylor, thanks. Essentially the drawing is what I have been using. Junction of flowing and non-flowing water. The only difference is if there are significant elevation changes, I will use the dead end reading technique for a looped main, which allows Warning: Unusual link This message contains an unusual link, which may lead to a malicious site. Confirm the message is safe before clicking any links. Taylor, thanks. Essentially the drawing is what I have been using. Junction of flowing and non-flowing water. The only difference is if there are significant elevation changes, I will use the dead end reading technique for a looped main, which allows me to easily include elevation. Todd Williams Fire Protection Design/Consulting Stonington, CT 860-608-4559 On Apr 11, 2025 at 10:03 AM, <Taylor Schumacher<mailto:[email protected]>> wrote: Accounting for elevation is paramount and that will need to be adjusted for. onX has the best elevations. Aside from that I’ll give the same answer that I got years back from Steve which is, go look in a wonderful little book called “Sprinkler Hydraulics” by Harold Waas, Jr. There’s a chapter titled "Relating Hydraulic Calculations to the Water Supply” which answers this fully and describes the differences in circulating mains and dead end mains. Since this book is from 1983, I’ll save you scouring eBay like I did in 2017, I’ve attached the picture since it’s a Friday. Taylor Schumacher Security Fire Sprinkler<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.j-berd.com%2f&c=E,1,Yt9BeQS9xZonekrTGThqLK6CF4-qzflGm2V_35QNvfjQSgRMIPicK_Rf6In-41AnwYXYPAiE8mq8AxRAtiQTesAbRcy4_xgqVoXU0XecK82xfme0oTg88aEvBD4q&typo=1> 1 Industrial Blvd | Sauk Rapids, MN 56379 Office: 320.640.7050 | Cell: 605.212.2132 From: cw bamford <[email protected]<mailto:[email protected]>> Sent: Friday, April 11, 2025 8:30 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]<mailto:[email protected]>> Subject: [Sprinklerforum] Re: Effective point of a flow test. NFPA 291 from 2022 Fire Pump Handbook 4.4.6 I have used Google Earth Pro It has Elevation (not perfect but close and you can get elevation Change between hydrant(s)) Hose Monster has a Good 8 page PDF on Hydrant Flow Testing Chuck Bamford On Fri, Apr 11, 2025 Warning: Unusual sender <[email protected]<mailto:[email protected]>> You don't usually receive emails from this address. Make sure you trust this sender before taking any actions. NFPA 291 from 2022 Fire Pump Handbook 4.4.6 I have used Google Earth Pro It has Elevation (not perfect but close and you can get elevation Change between hydrant(s)) Hose Monster has a Good 8 page PDF on Hydrant Flow Testing Chuck Bamford On Fri, Apr 11, 2025 at 5:29 AM Fpdcdesign <[email protected]<mailto:[email protected]>> wrote: What is the effective point of a hydrant flow test? By that, I mean the point you should design from. I was told from the beginning that it is at the intersection of flowing and non-flowing water (i.e the connection between the point of the flowing main with the branch to the hydrant where the pressures are read.) Am I doing something wrong? This comes from a test that a regional water company did and they will only tell me what hydrant was flowed. It could make a difference because of elevation. Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080<tel:860-535-2080> (ofc) 860-554-7054<tel:860-554-7054> (fax) 860-608-4559<tel:860-608-4559> (cell) _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2flists.firesprinkler.org%2flist%2fsprinklerforum.lists.firesprinkler.org&c=E,1,gpUuAA9RtQ3W-mHPHvoJCpqhXTqBZksIXiaan-wJfkfPMZHuwowiCeRhI2cV9RTP3rcDE9axUfZ327NUIx3FfnqFpkjN1Lhk4PQQ_TmP5ni8A8JNHPCeLQ,,&typo=1> To unsubscribe send an email to [email protected]<mailto:[email protected]> _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]<mailto:[email protected]>
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