This actually brings up a good point, a 7 story building any way I can imagine slicing it is both a trigger to standpipes and high rise (which rules out manual in just about any scenario as I recall).
Mike Morey CFPS 3229 • NICET S.E.T. 123677 Project Estimator • Fire Protection Group Shambaugh & Son, LP an EMCOR Company 7614 Opportunity Drive • Fort Wayne, IN • 46825 direct 260.487.7824 / cell 260.417.0625 email [email protected]<mailto:[email protected]> 24/7<outlook-data-detector://2/> SERVICE LINE 888.217.7055<tel:888.217.7055> [cid:[email protected]] From: Jackie Ward <[email protected]> Sent: Tuesday, November 19, 2024 9:12 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: Fire Pump Sizing Most demanding can be determined by volume or pressure. In your case it would be pressure (7th Floor). Am I correct in assuming your standpipe is a manual system, not automatic. If the standpipe is automatic, it would be the greater demand. ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message originated outside your organization. ZjQcmQRYFpfptBannerEnd Most demanding can be determined by volume or pressure. In your case it would be pressure (7th Floor). Am I correct in assuming your standpipe is a manual system, not automatic. If the standpipe is automatic, it would be the greater demand. Thank you, Jackie “JW” Ward 1-405-240-7076 From: Jeff Brickell <[email protected]<mailto:[email protected]>> Sent: Tuesday, November 19, 2024 8:06 AM To: [email protected]<mailto:[email protected]> Subject: [Sprinklerforum] Fire Pump Sizing I have a situation that’s unique to me and am looking for some guidance. I have a 7-story building. The first level contains a parking garage with a demand of 635 GPM @ 61 PSI. The municipal supply can meet this demand. The 7th floor has I have a situation that’s unique to me and am looking for some guidance. I have a 7-story building. The first level contains a parking garage with a demand of 635 GPM @ 61 PSI. The municipal supply can meet this demand. The 7th floor has a remote area with a demand of 285 GPM @ 66 PSI, which the municipal supply cannot meet. NFPA 20 says to size a fire pump to meet the greatest demand. If I can meet the level 1 demand without a pump, why would I need to size a fire pump for it? There would be a drastic size reduction if I only had to meet the 7th floor demand. I have reached out to a couple other people, and they have all said I need to size the pump to the garage demand, I am just curious as to why. If the contractor were to tee the underground and bring up a second supply for the first floor only would that be acceptable to then not use a pump? Maybe there is something I’m not considering or thinking of since this is new to me. Any advice, comments welcome, thank you. Jeff Brickell, CET Senior Estimator/Designer NICET III CERTIFIED CERT #147245 OREGON CERTIFIED COBID FIRM #13272 (EMERGING SMALL BUSINESS) TRIAD FIRE PROTECTION [cid:[email protected]] OREGON . WASHINGTON . ARIZONA OFFICE 503.856.6333 CELL 602.550.4292 FAX 866.766.8862 This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient.
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