They may want to save everyone the trouble and just ban non-sprinklered buildings. I don't know of too many municipalities that can deliver 8,000 gpm even at 20 psi (or 5,600 gpm for that matter) That's an awful lot of water and seems pretty excessive. What type of fire are they preparing to fight, Ground Zero?
Ray Schmid Koffel Associates -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby Gillett Sent: Wednesday, October 03, 2007 12:24 PM To: [email protected] Subject: RE: Fire Flow requirements Still haven't heard from the AHJ to ask the obvious, but looking at his Fire Flow Requirements Chart there is already a reduction for sprinklered buildings. This particular scenario; No Sprinklers=8,000 GPM Sprinkler System=5,600 ESFR=4800!!! Maybe he will allow a 50% reduction-then I will be in the game. Thanks again to EVERYONE for their help. I will let you know how it plays out. Bobby Gillett Project Manager [EMAIL PROTECTED] (731)-424-0130 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Fletcher, Ron Sent: Wednesday, October 03, 2007 8:54 AM To: [email protected] Subject: RE: Fire Flow requirements I deal with this problem everyday here in Phoenix. Table B105.1 list the required fire flows based on total square feet of the largest building on a site. B105.2 Exception allows up to a 50% reduction in fire flow for buildings sprinklered in accordance with 903. It doesn't sound like the AHJ has allowed a reduction for sprinklers so I would first ask that they reconsider the requirement and apply the allowed 50% reduction. Where is the 500 ft dimension coming from? 508.5.1 Requires private hydrants if all portions of a facility are not within 400 ft. of a (public) hydrant on an access road so 500 ft. is pushing the envelope. Good luck and please let me know how this ends. Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby Gillett Sent: Wednesday, October 03, 2007 5:14 AM To: [email protected] Subject: Fire Flow requirements Hello Forum, I have a situation where a city is requiring 4800 gpm to be flowed @ a min of 20 from all hydrants within 500 ft of the bldg. This particular bldg has 5 hydrants on a 12" city line. I have received a flow test of 96-S 64-R 2519-GPM and set all five hydrants to flow 960 GPM. This will not produce the requirement. We do have a pump being installed inside the bldg.(2000 GPM / rated pressure of 60). If I pipe out from the pump room and add hydrants around the bldg. I still cannot meet this requirement. Has anyone run into this problem or had a similar situation? Any suggestions? Bobby Gillett Project Manager [EMAIL PROTECTED] (731)-424-0130 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
