Understood but sometimes if the flow/fire pump points are way out there the demand can be lost in the lower numbers. I had graphs where the demand was literally on the bottom line of the graph. Would be better if it was higher up so you could see the numbers it is representing.
That's all I'm saying is about the aesthetics of the graph lol but really a issue though. Aaron M. Peck SET NICET IV (Fire) +1 (202) 407-9079 Skype +855 (78) 700-407 Cellphone Sent from my iPhone On Jul 8, 2013, at 23:01, [email protected] wrote: > The pump is sized for other hazards on the site with greater demand than this > particular area. This area is small and the demand represents less than 40% > of the actual pump rating. > > Yes the pump is existing. > > As far as graphing the curve, it's a matter of plugging in numbers in a > dialogue box in the calc program. > > Craig L. Prahl, CET > Fire Protection > CH2MHILL > Lockwood Greene > 1500 International Drive > Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > CH2MHILL Extension 74102 > [email protected] > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Aaron > Peck > Sent: Monday, July 08, 2013 11:52 AM > To: [email protected] > Subject: Re: Using points on the pump curve for calculations > > Only thing I can think of its an existing fire pump and the design requires > below the 50% so he didn't want to show the whole curve. Am I correct that > the fire pump is existing or something similar? > > Because if the pump is being put In by them it's rated much higher then the > demand, I'm assuming. Or other case maybe it's sized large for a future > expansion that will require a fire pump that size. > > In either case the fire pump curve is maybe to much to graph with a low > demand. > > Aaron M. Peck SET > NICET IV (Fire) > +1 (202) 407-9079 Skype > +855 (78) 700-407 Cellphone > Sent from my iPhone > > On Jul 8, 2013, at 22:46, John Denhardt <[email protected]> wrote: > >> Where is the calculation demand point? I like using the point near my >> demand condition, >> >> John August Denhardt, P.E., FSFPE >> Strickland Fire Protection Incorporated >> 5113 Berwyn Road >> College Park, Maryland 20740 >> Office Telephone Number: 301-474-1136 Mobile Telephone Number: >> 301-343-1457 FIRE SPRINKLERS SAVE LIVES - Can you live without them? >> >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of >> [email protected] >> Sent: Monday, July 08, 2013 11:44 AM >> To: [email protected] >> Subject: Using points on the pump curve for calculations >> >> Got a calculation I'm reviewing where the designer used the fire pump 50% >> test point for his calculations and plugged it in as the City water supply >> info. The water source for the fire pump is an aboveground suction tank. >> >> I've not done this and was always taught that when a fire pump was used you >> used the fire pump churn, rated and 150% values in the calculation for your >> water source. >> >> Any thoughts, did I miss a memo on a new or other way to calc when using a >> fire pump? >> >> Craig L. Prahl, CET >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >> er.org _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >> er.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
