Correctly it would have to come off the public before the pump. If you have a steep supply curve, it could have an impact. If all you have is a pump test, then I would consider adding the additional flow at the base of the riser or somewhere where it might flow. You have to consider the full hose flow in the design
At 08:25 AM 4/6/2010, you wrote: >I do not when I use an inside fire pump system for the water supply that >does not supply the outside fire hydrants. > >John > >John August Denhardt, P.E. >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 > > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of Dewayne >Martinez >Sent: Tuesday, April 06, 2010 8:43 AM >To: [email protected] >Subject: Hose allowance > >I am calculating a new ESFR system that is supplied by an existing fire >pump. I am using a recent fire pump test as my water supply information >and calculating the system back to the pump discharge flange. >My question is when picking up hose allowance, NFPA dictates 250GPM. >Normally I would put 100gpm inside and 150gpm outside. Since I am >calculating back to the pump discharge flange, do I still need to >include the 150 outside house? If so, where? >Thanks, >Dewayne Martinez >Design Build Fire Protection >New Berlin, WI >_______________________________________________ >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) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ 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)
