I think your AHJ is looking for a single way to shut off the combination standpipe, and he wants it where he wants it that makes sense to him: the riser room. I know of four adjacent jurisdiction where wants to control everything from a yard PIV 40 feet from all buildings, one wants a wall PIV on the outside of the building for each riser in the riser room, one wants a two-hour rating on the riser room and direct access from outside, and another is happy with the standard configuration of valves inside somewhere. As the heart knows what the heart wants the AHJ knows what the AHJ wants.
On Fri, Jun 6, 2014 at 8:03 AM, Martinez, Dewayne < [email protected]> wrote: > There is a header in the riser room with one riser for the basement > sprinkler system (w/ control valve) and another riser for the standpipes > (no control valve). One of the standpipe stairwell risers will be a > combined standpipe / sprinkler with the correct control/check valves > installed per NFPA. > I guess I could bring the basement system off the standpipe riser if > needed. > > -----Original Message----- > From: Sprinklerforum [mailto: > [email protected]] On Behalf Of Steve Leyton > Sent: Friday, June 06, 2014 9:27 AM > To: [email protected] > Subject: RE: control valve on standpipe bulk main? > > How are the sprinkler mains configured after the stand pipe bulk main > branches off? > > > Steve > > <div>-------- Original message --------</div><div>From: "Martinez, > Dewayne" <[email protected]> </div><div>Date:06/06/2014 > 6:43 AM (GMT-08:00) </div><div>To: > [email protected] </div><div>Subject: control valve > on standpipe bulk main? </div><div> </div>NFPA 13 or 14 (07ed) > > Situation: > > Water supply with BFP supplying one wet system and one standpipe system. > Wet system has a control valve in the riser room but we would like not to > put a control valve on the standpipe riser / bulk main in order to connect > the FDC to it father down in the building. Each stairwell standpipe will > have a control valve to isolate it off the standpipe bulk main. AHJ is > requiring an additional control valve on the bulk main in the riser room > which would require us to now run an additional 250ft of 4in pipe to the > FDC location. Of course he won't state where he gets this requirement just > that he wants it. I have piped several buildings this way in the past. > Have I been doing it wrong all these years? > > Thanks, > > Dewayne > > > > > > _______________________________________________ > 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 > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
