The loophole is if "the fire department can pump supplemental water" (3.8.1.4), whatever that is. I have never been able to figure out how to do that, have you?
Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Greg McGahan Sent: Monday, March 07, 2011 10:53 AM To: [email protected] Subject: Re: Manual vs Auto SP wait! Let's keep it very simple here: Can you calculate a SP system that utilizes both a fixed Fire pump that feed sprinklers and SP's and also use the FDC with the accompanying Fire Pumper Truck and adajent fire hydrant as a SOURCE? I think the answer is a resounding NO but I am willing to be wrong if there is a loophole I am unfamiliar with... Thanks, Greg On Mon, Mar 7, 2011 at 11:48 AM, George Church <[email protected]>wrote: > Is the FDC connected to pump suction? > If its not, and the pump is producing 150 PSI discharge, and the FD hits > the FDC with 150 (connected to the discharge side of the fire pump), then > you have 150 PSI, not 300, going to the system. > > You can graph the combination of dissimilar supplies by graphing both and > adding the flows at same pressures. > > Safe to assume the large Fed entity has an FPE as EOR? Cause the FDC isn't > exactly an "automatic" water supply, so the ice is thin, even if its up by > the FroBros. > > George Church > Rowe Sprinkler Systems, Inc. > PO Box 407, Middleburg, PA 17842 > 877-324-ROWE 570-837-6335 fax > [email protected] > > > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Greg McGahan > Sent: Monday, March 07, 2011 12:29 PM > To: [email protected] > Subject: Manual vs Auto SP > > What do you do with an existing SP system that far exceed the pressure > requirement when performing calcs...nearly 200 psi over the curve due to the > fact that you are flowing 1,250 gpm through 4" pipe. > > The owner wants to classify the system as MANUAL and utilize a FD to feed > the system but leave the fire pump connected. The system still does not > work when using only the FDC feeding the system due to the fact that the FD > only plans to utilize 2 each 2-1/2" hose to connect to the FDC. > > The owner - a large Federal Entity - wants to make this a HYBRID system > utilizing the Fire Pump and the FDC combined. I can't find a correct way to > do this...thoughts? > > Greg > > -- > Greg McGahan > Living Water Fire Protection, LLC > 1160 McKenzie Road > Cantonment, FL 32533 > 850-937-1850 > fax 850-937-1852 > _______________________________________________ > 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) > -- Greg McGahan Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 fax 850-937-1852 _______________________________________________ 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)
