Don't make the assumption of the reduction. It is permitted up to 75% but that is at the discretion of the AHJ. Depending on your type of facility, location, number of hydrants, etc. your results may vary.
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 Dick Culver Sent: Thursday, June 26, 2014 1:07 PM To: [email protected] Subject: RE: Water Supply Evaluation Todd / Tim NFPA 1 provides information regarding reduction of fire flows in those jurisdictions that have adopted this code. Section 18.4.5.2 & 18.4.5.2.1 allow a reduction of 75% for an approved automatic sprinkler system but not less than 1000 gpm and a structure utilizing Quick Response sprinklers can be reduced to not less than 600 gpm. Dick Culver -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Todd - Work Sent: Thursday, June 26, 2014 11:39 AM To: [email protected] Subject: Re: Water Supply Evaluation I would probably make sense to have the Architect or his Engineer make the call. There is an allowance in 1142 for the AHJ to decrease the required volume for a sprinklered building. Is he/she taking this into consideration? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT www.fpdc.com 860-535-2080 (ofc) > On Jun 26, 2014, at 11:25 AM, "Tim Stone" <[email protected]> wrote: > > Craig, > > In this case I was hired by the Architect to design a Sprinkler system > for a brand new Church. The project is in a rural setting so fire pump > and tanks are being used. Is it reasonable for the AHJ to expect the > NICET certified designer to perform this duty or shouldn't this > responsibility fall back onto the Architect who in this case would be > the EOR? > > Regards, > G. Tim Stone > > G. Tim Stone Consulting, LLC > NICET Level III Engineering Technician Fire Protection Sprinkler > Design and Consulting Services > > 117 Old Stage Rd. - Essex Jct., VT. 05452 > CELL: (802) 373-0638 TEL: (802) 434-2968 Fax: (802) 434-4343 > [email protected] > > -----Original Message----- > From: Sprinklerforum > [mailto:[email protected]] > On Behalf Of [email protected] > Sent: Thursday, June 26, 2014 11:03 AM > To: [email protected] > Subject: RE: Water Supply Evaluation > > Is your project a rural or suburban project? > > Fire flow requirements should be identified by the EOR with direction > from the local or otherwise applicable fire authority. > > I typically make a call to the local fire authority to find out what > method is used to determine fire flow. There are several different > methods out there with requirements that vary greatly so guessing > isn't a wise move. > > Once we know their approved method, we apply that info and determine > what is required to meet Code. Sometimes that entails a tank and > pump, sometimes not. > > Fire Flow is one thing that gets overlooked a lot in engineering > design. We recently had one contractor telling an owner that the > requirements for fire flow were ridiculous and he's never had to do > that anywhere else. I hope he doesn't do much design beyond 7-11 > stores with his level of knowledge of the Codes. > > 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 Steele, Andrew > Sent: Thursday, June 26, 2014 10:47 AM > To: [email protected] > Subject: RE: Water Supply Evaluation > > This most likely is from the International Fire Code, Chapter 5, Fire > Service Features, (G) Section 507 Fire Protection Water Supplies. > Subsection 507.3 says "fire flow requirements for building or portions > of building and facilities shall be determined by an approved method". > In Ohio, this has been adopted direct into the Ohio Administrative Code. > I'm guessing any other jurisdiction using ICC are (or will) be doing the > same. > > Typically the local Fire Marshal will help facilitate the evaluation > (to be conducted by a private fire protection/water utility > contractor) and will be the one to review/approve it. > > Andrew Steele > Dayton, OH > (937) 333-4522 > > > > -----Original Message----- > From: Sprinklerforum > [mailto:[email protected]] On Behalf Of > Tim Stone > Sent: Thursday, June 26, 2014 10:34 AM > To: [email protected] > Subject: Water Supply > > > > Has anyone in other parts of the country run across this? > > I just received a copy of a state fire marshal's review letter on a > new project in which they are asking that the (Water supply for > firefighting shall be evaluated and provided in accordance with NFPA 1142). > > > > Who is responsible for this evaluation in your area? > > > > Regards, > > G. Tim Stone > > > > G. Tim Stone Consulting, LLC > > NICET Level III Engineering Technician > > Fire Protection Sprinkler Design > > and Consulting Services > > > > 117 Old Stage Rd. - Essex Jct., VT. 05452 > > CELL: (802) 373-0638 TEL: (802) 434-2968 Fax: (802) 434-4343 > > <mailto:[email protected]> > [email protected] > > > > _______________________________________________ > 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-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
