😀 On Fri, May 7, 2021 at 11:23 AM Michael Hill via Sprinklerforum < sprinklerforum@lists.firesprinkler.org> wrote:
> There goes my logic, right out the window......again. > > Mike Hill > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Bob Caputo via Sprinklerforum > Sent: Friday, May 7, 2021 2:21 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: Bob Caputo <bcap...@firesprinkler.org> > Subject: Re: Available Pressure from Fire Water Storage Tank > > No, you are not permitted to use elevation pressure from a gravity tank. > You do not know the elevation of the water in the tank which is depleted > during the operation of the systems in fighting the fire. You are > permitted to use the pumps productive curve at 150% of rated flow and 65% > of rated pressure > > On Fri, May 7, 2021 at 11:13 AM Kyle.Montgomery via Sprinklerforum < > sprinklerforum@lists.firesprinkler.org> wrote: > > > I'm working on a project where they are adding a new building to an > > existing campus. There is an existing fire water storage tank and fire > > pump that serves the site underground fire loop. The new building has > > a very demanding sprinkler system that just barely exceeds the fire > > pump's pressure available at the demand flow (using just the pump > > curve as the water supply). > > > > Normally, I would be conservative and use just a few psi as my water > > supply from the tank (as though it were nearly empty). But, is that > > overly conservative? The tank is mounted on the ground, at the same > > elevation as the fire pump, but it is nearly 45 feet tall, with a > > total capacity of over > > 500,000 gallons. Can I use some of that elevation pressure, or do I > > need to design and calc as though the tank is nearly depleted? > > > > -Kyle M > > _______________________________________________ > > Sprinklerforum mailing list > > Sprinklerforum@lists.firesprinkler.org > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.org > > > -- > Bob Caputo, CFPS > *President* > > *American Fire Sprinkler Association* > p: 214-349-5965 ext124 > w: firesprinkler.org > <https://www.facebook.com/firesprinkler.org/> > <https://twitter.com/afsa/status/1039528345367732224> > < > https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/ > > > <https://www.instagram.com/firesprinklerorg/> > > *Train a safer, more efficient workforce.* > > By enrolling your employees in the AFSA Apprenticeship Training Series for > Sprinkler Fitters < > https://www.firesprinkler.org/WWW/Education/Apprentice_Training/WWW/Education/Apprenticeship_Training.aspx?hkey=e88ef09e-d74c-407f-abcd-995aff866149 > >, > you will reap the benefits of a qualified, professional installation crew. > Well-trained employees will work smarter, increasing your company's > productivity and, in turn, its profits. Learn more < > https://www.firesprinkler.org/WWW/Education/Apprentice_Training/WWW/Education/Apprenticeship_Training.aspx?hkey=e88ef09e-d74c-407f-abcd-995aff866149 > > > . > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Bob Caputo, CFPS *President* *American Fire Sprinkler Association* p: 214-349-5965 ext124 w: firesprinkler.org <https://www.facebook.com/firesprinkler.org/> <https://twitter.com/afsa/status/1039528345367732224> <https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/> <https://www.instagram.com/firesprinklerorg/> *Train a safer, more efficient workforce.* By enrolling your employees in the AFSA Apprenticeship Training Series for Sprinkler Fitters <https://www.firesprinkler.org/WWW/Education/Apprentice_Training/WWW/Education/Apprenticeship_Training.aspx?hkey=e88ef09e-d74c-407f-abcd-995aff866149>, you will reap the benefits of a qualified, professional installation crew. Well-trained employees will work smarter, increasing your company's productivity and, in turn, its profits. Learn more <https://www.firesprinkler.org/WWW/Education/Apprentice_Training/WWW/Education/Apprenticeship_Training.aspx?hkey=e88ef09e-d74c-407f-abcd-995aff866149> . _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
