The reason I was asking is that there is a fire at a tire warehouse in Torrington, CT (for live streaming video, go to wfsb.com, click on the story and there is a link to the video at the bottom). Fortunately, the smoke turned from mostly black to mostly white, but they have dumped a lot of water on it. I was wondering if the 250 was a reasonable number.
Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT www.fpdc.com 860-535-2080 (ofc) > On Apr 3, 2014, at 12:58 PM, Tim Frankenberg <[email protected]> > wrote: > > A maximum realistic manual hand line flow is 350 GPM. There are some that > have proven empirically that 500 can be flowed, that is not realistic to the > ordinary operator of an engine and the folks on the nozzle. It works in a > more controlled environment, but not the typical fire ground. > > The "typical" fog nozzle is 250 GPM at 100 psi and with the modern advances > in hose technology and materials the old friction losses are a bit less than > the old cotton jacket days. The 1 1/8" tip solid stream is 262 GPM at 50 PSI. > The real world is plus/minus 10-15% on most hydraulics on the fire ground > when you factor in gauge accuracy, actual friction losses, elevation changes > and nozzle. > > If the hose is connected to a master stream, the flow is directly > proportional to the length but you could be around 600 GPM max on a 2 1/2" > line at 100 feet. > > Best Regards, > > Tim > > Tim Frankenberg, CT, CFPS > Fire Product Manager > Potter Electric Signal Company, LLC > 5757 Phantom Drive, Ste. 125 > Hazelwood, MO 63042-2429 > 800-325-3936 > > www.pottersignal.com > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Tom > Wellen > Sent: Thursday, April 03, 2014 11:42 AM > To: [email protected] > Subject: Re: actual hose flow > > Like Steve said, it depends. > > Here is a brochure link that may help. > http://www.elkhartbrass.com/files/aa/downloads/catalog/catalog-f2-01-08.pdf > > There's 2.5 in. hose and there are 2.5 in. couplings with 3 in. hose. All > kinds of nozzles from adjustable to smooth bore tips from 1/2 in. to 2 in. > The hose and hose monitors we carried had both adjustable nozzles and > stackable smooth bore tips. Then the pump operator may use preset pressures > or manual throttles. > > It depends on the fire and yes, it's a wrestling match and not a one man job > unless it is the ground monitor. > > > Tom > > >> On Apr 3, 2014, at 11:20 AM, "Steve Leyton" <[email protected]> >> wrote: >> >> Obviously, there are countless situational variables, but I have been >> told anecdotally that a 2 1/2" line when used on attack can be used >> anywhere in the range of 150-400 gpm. At the high end, it's a >> wrestling match and only used for outside streams. >> >> SL >> >> >> >> >> >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of >> Todd - Work >> Sent: Thursday, April 03, 2014 9:18 AM >> To: [email protected] >> Subject: actual hose flow >> >> I know we assume a 250 gpm flow for a single fire hose. What is the >> actual amount of water that is discharged from a 2-1/2" fire hose in a >> fire situation? >> >> Todd G Williams, PE >> Fire Protection Design/Consulting >> Stonington, CT >> www.fpdc.com >> 860-535-2080 (ofc) >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >> er >> .org >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >> er.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
