It is a wet manual standpipe. Thank you for the response.
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 From: Jackie Ward <[email protected]> Sent: Tuesday, November 19, 2024 7:12 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. 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
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