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
