It depends on what the FM wants to see and what the software you're using is showing. I just got done looking at an old hydracalc curve and it shows the city pressure available at 150% of pump but it looks like that is just from extending the demand curve down to the 150% mark and not figuring the friction losses up to the pump at that demand - from the city side. Either way you're going to have to do the math, either with a calculator, hydraulic calc program, or a friction loss chart. Unless I'm missing something this is something extremely simple to show the fire marshall - that is unless the calcs are showing a problem.
--- On Wed, 11/17/10, Charles Thurston <[email protected]> wrote: From: Charles Thurston <[email protected]> Subject: Re: Fire Pump's To: "Ralphy Henderson" <[email protected]> Date: Wednesday, November 17, 2010, 9:18 PM Hello Ralphy, What if you just put your pump curve on the same chart as your supply curve to show them both at all points..... Wednesday, November 17, 2010, 4:12:06 PM, you wrote: > I've done separate calcs in the past just showing the friction losses > occurring during 150% of rated flow. Shouldn't this be done anyways to verify > that the municipal water pressure isn't getting dangerously low? > I'd just show the fire pump flowing the 150% with nothing else going on just > to verify A) The UG is sized appropriately and B) You're not sucking the > municipal water dry. > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) -- Best regards, Charles Thurston mailto:[email protected] Coastal Fire Protection/ Myrtle Beach Fire & Safety Group. AFAA Guest Electronic Privacy Notice: This e-mail, and any attachments, contains information that is, or may be, covered by electronic communications privacy laws, and is also confidential and proprietary in nature. If you are not the intended recipient, please be advised that you are legally prohibited from retaining, using, copying, distributing, or otherwise disclosing this information in any manner. Instead, please reply to the sender that you have received this communication in error, and then immediately delete it. Thank you in advance for your cooperation _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
