If there was ever a situation in which a good old-fashioned hand calc’ was the best and easiest solution … You can literally use the simplified method from 13D y’all …
The foregoing is my opinion only and is not intended to represent the NFPA 14 Technical Committee, nor serve as an interpretation of the standard. Steve Leyton Protection Design & Consulting San Diego, CA SML From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Fire Design Sent: Tuesday, April 17, 2018 9:22 AM To: sprinklerforum@lists.firesprinkler.org Subject: Re: Supply calculation for manual-wet standpipe I use hydracalc and it looks like what the designer did was just do a standard supply&demand calc but did not enter water supply information - which you can do. When done this way the calculations output the graph you show but does not include the supply since it was not entered. I guess he's leaving it up to you or the reviewing authority to determine if they can meet the demand with their pumper trucks. [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif]<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> On Tue, Apr 17, 2018 at 7:41 AM, Steve Leyton <st...@protectiondesign.com<mailto:st...@protectiondesign.com>> wrote: Danger! Don’t assume standard practices, get the inlet pressure from the serving FD and reference that agency as the source of the “Flow Test Data”. The foregoing is my opinion only and is not intended to represent the NFPA 14 Technical Committee, nor serve as an interpretation of the standard. Steve Leyton Protection Design & Consulting San Diego, CA Steve From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>] On Behalf Of Mike Stossel Sent: Tuesday, April 17, 2018 6:44 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: RE: Supply calculation for manual-wet standpipe I believe to be certified under the guidelines of NFPA 1901 the minimum the pumper would supply is 150psi @1,000gpm, 200psi @ 750gpm and 250psi @ 500gpm. Mike Stossel SET [400dpiLogoCropped] 36 Barren Road East Stroudsburg, PA 18302 Office: 973-670-2627 m...@knssprinkler.com<mailto:m...@knssprinkler.com> From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>> On Behalf Of Travis Mack Sent: Tuesday, April 17, 2018 9:41 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: Re: Supply calculation for manual-wet standpipe Demand was only 750. Typically pumper truck will deliver more psi at only 750 gpm. Travis Mack, SET MFP Design, LLC "Follow" us on Facebook: https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to MFP Design via: https://www.hightail.com/u/MFPDesign Sent from my iPhone On Apr 17, 2018, at 6:35 AM, Rocci 3 Cetani <roc...@norcalfire.com<mailto:roc...@norcalfire.com>> wrote: Looks like hydra cad and also looks like he is over the standard pumper trucks 150 PSI…..unless your pumper trucks pump more than 150 PSI I would have him look at it again Rocci Cetani III, CET Senior Designer Water-Based Fire Protections Systems Layout, Nicet Level III Northern California Fire Protection Services Inc. 16840 Joleen Way Bldg. A Morgan Hill, CA 93037 P-(408) 776-1580 EXT.111 F-(408) 776-1590 roc...@norcalfire.com<mailto:roc...@norcalfire.com> www.norcalfire.com<http://www.norcalfire.com/> CONFIDENTIALITY NOTICE: This message and any document accompanying it may contain confidential information belonging to the sender. The information is intended only for the use of individual or entity named above. If you are not the intended recipient, or the employee or agent responsible to deliver this message to the intended recipient, you are hereby notified that any disclosure, copying or taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this transmission in error, please immediately notify us by telephone to arrange for return of the documents. From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>> On Behalf Of Matt Grise Sent: Tuesday, April 17, 2018 6:20 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: RE: Supply calculation for manual-wet standpipe What software package is it? Matt From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>> On Behalf Of Dewayne Martinez Sent: Tuesday, April 17, 2018 7:39 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Cc: Dewayne Martinez <dmarti...@total-mechanical.com<mailto:dmarti...@total-mechanical.com>> Subject: RE: Supply calculation for manual-wet standpipe I am not used to seeing this calc program so I may be looking at this wrong but I don’t see a water supply on this graph. <image001.png> Dewayne Martinez Fire Protection Design Manager TOTAL Mechanical Building Integrity W234 N2830 Paul Rd. Pewaukee, WI 53072 dmarti...@total-mechanical.com<mailto:dmarti...@total-mechanical.com> Ph: 262-522-7110 Cell: 414-406-5208 http://www.total-mechanical.com/ <image002.jpg> From: Dewayne Martinez <dmarti...@total-mechanical.com<mailto:dmarti...@total-mechanical.com>> Sent: Tuesday, April 17, 2018 6:42 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Cc: Dewayne Martinez <dmarti...@total-mechanical.com<mailto:dmarti...@total-mechanical.com>> Subject: RE: Supply calculation for manual-wet standpipe I initially put in a supply of 150psi at 1000gpm and then modify it until I get a 0 PSI cushion. Dewayne Martinez Fire Protection Design Manager TOTAL Mechanical Building Integrity W234 N2830 Paul Rd. Pewaukee, WI 53072 dmarti...@total-mechanical.com<mailto:dmarti...@total-mechanical.com> Ph: 262-522-7110 Cell: 414-406-5208 http://www.total-mechanical.com/ <image002.jpg> From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>> On Behalf Of Matt Grise Sent: Tuesday, April 17, 2018 6:26 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: RE: Supply calculation for manual-wet standpipe When you say that you tweak it to find the actual demand – does your software not tell you the psi input required to supply the hose demand you request at the standpipe outlets? I usually see ‘required pressure’ as an output of the software no matter what the input is. Matt From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>> On Behalf Of Dewayne Martinez Sent: Tuesday, April 17, 2018 6:02 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Cc: Dewayne Martinez <dmarti...@total-mechanical.com<mailto:dmarti...@total-mechanical.com>> Subject: Supply calculation for manual-wet standpipe One of my free lancers sent me a supply calculation for a manual wet standpipe. I have always put in a “pumper connection” supply at the FDC, did a demand calc and tweaked it until I ended up with a zero pound cushion to see what was really required. His way looks to be good. Have I been taking the hard way around to solve what PSI is required at the FDC? Thanks, Dewayne Martinez Fire Protection Design Manager TOTAL Mechanical Building Integrity W234 N2830 Paul Rd. Pewaukee, WI 53072 dmarti...@total-mechanical.com<mailto:dmarti...@total-mechanical.com> Ph: 262-522-7110 Cell: 414-406-5208 http://www.total-mechanical.com/ <image002.jpg> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org<mailto:Sprinklerforum@lists.firesprinkler.org> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ 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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