Mark- Yes that's how the calc's were done. He wasn't' questioning that we included the extra gpm he was thinking that there should also be additional psi required for the 250gpm hose. I think with the suggestions of everyone here he finally gets it or he just gave up...
Brian Harris, CET BVS Systems Inc. bvssytemsinc.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, November 18, 2014 4:36 PM To: [email protected] Subject: RE: Hose added to calc's. no PSI If you added the hose "allowance" to your calcs, then you have included it in the available water supply, i.e. if the remote area demand is 200gpm sprinkler flow at 28 psi, and you add 250 gpm hose "allowance" to that and say that your total demand (hose and sprinkler) is 450 gpm at 28 psi, then you have INCLUDED the hose demand in your residual pressure demand of 28psi. If the available water supply curve shows there is more than 28 psi at 450 gpm, then you're good to go. Is this how your calculations were done? Mark at Aero -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Brian Harris Sent: Tuesday, November 18, 2014 2:22 PM To: [email protected] Subject: RE: Hose added to calc's. no PSI Craig- The owner is very skeptical of there being enough water supply without adding a tank, we provided calculations for the sprinkler system and now he wants a civil engineer to provide fire calc's as well. The civil guy was asking why we didn't include any extra psi drop for the outside hose allowance. Brian Harris, CET BVS Systems Inc. bvssytemsinc.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, November 18, 2014 4:15 PM To: [email protected] Subject: RE: Hose added to calc's. no PSI Why does he care? Craig L. Prahl Fire Protection Group Lead CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29303 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Brian Harris Sent: Tuesday, November 18, 2014 1:59 PM To: [email protected] Subject: Hose added to calc's. no PSI I've been trying to explain to a civil engineer that we (fire sprinkler) include outside hose allowance into our calc's but only for the extra gpm, not as far as additional psi goes. I'm sure it's the way I'm trying to explain it that's not making any sense to him, can one of you more versed in the English language help me out and put it in layman's terms for me? Brian Harris, CET BVS Systems Inc. Sprinkler Division bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935 _______________________________________________ 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 _______________________________________________ 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
