I know the static pressure. I need the RESIDUAL pressure and flow through an open 8" pipe at ground level.
Greg McGahan Operations Manager Living Water Fire Protection 1160 McKenzie Road P.O. Box 877 Cantonment, Florida 32533 (850) 937.1850 | Fax (850) 937.1852 | Cell (850) 554.3231 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, August 06, 2009 7:28 AM To: [email protected] Subject: RE: water storage tank The formula is: ft of water x .433 = psi So for 140 ft of head the approximate psi would be around 60 psi, at 70 ft it would be approximately 30, etc. Note that this does not account for the loss through the tank outlet, vortex plate valves or piping loss. Find out what that 8" is. Especially if it's a plastic. Beware of HDPE. Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Greg McGahan Sent: Thursday, August 06, 2009 8:18 AM To: [email protected] Subject: water storage tank We have a situation where a new water storage tank is being installed on a public utility system and I need some help if anyone can tell me the following: New Tank - 140' high 8" pipe (unknown type) going straight to ground level What is a reasonable expected flow and residual pressure? Any help would be appreciated. Greg McGahan Operations Manager Living Water Fire Protection 1160 McKenzie Road P.O. Box 877 Cantonment, Florida 32533 (850) 937.1850 | Fax (850) 937.1852 | Cell (850) 554.3231 [email protected] _______________________________________________ Sprinklerforum mailing list http://lists.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 http://lists.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 http://lists.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)
