One jurisdiction around here, requires DI on anything before the backflow. Basically running the underground inside the building up to the backflow. NFPA 24, uses the AWWA approvals.
David Autry Meininger Fire Protection 2521 West L Street, Suite 5 Lincoln, NE 68522 402.466.2616 402.466.2617 fax [email protected] -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Mike Hairfield Sent: Monday, January 18, 2016 2:55 PM To: [email protected] Subject: RE: Ductile Iron Fittings How about AWWA? Mike > From: [email protected] > To: [email protected] > Subject: RE: Ductile Iron Fittings > Date: Mon, 18 Jan 2016 20:52:14 +0000 > > B16.4 is for gray iron which I think is the most common form for fire sprinkler system above ground threaded fittings. > > I'm attempting to determine the applicable standard for ductile iron flanged fittings AND whether or not such fittings are permissible in the above ground portion of the fire sprinkler system. Specifically in the riser manifold. It could be a flanged ductile iron tee or flanged ductile iron spool piece, etc. > > I heard that they are being used as I described. So, I thought I'd look it up to see if NFPA 13 allowed it. And, none of the standards listed in the acceptable materials table address ductile iron. > > I'm comfortable with pointing to 1.7 as a "back up" justification. But, any more help would be appreciated. > > J. Scott Mitchell, PE > Fire Protection Engineer | > Projects Engineering > CNS Pantex | 806.477.5883 | > > > -----Original Message----- > From: Sprinklerforum > [mailto:[email protected]] On Behalf Of > Matthew J Willis > Sent: Monday, January 18, 2016 2:29 PM > To: [email protected] > Subject: RE: Ductile Iron Fittings > > Scott, > > Isn't 36.10M for Welded and Seamless pipe? > B16.4 is for fittings. > > R/ > Matt > > Matthew J. Willis > Project Manager > Rapid Fire Protection Inc. > *NEW ADDRESS* > 1530 Samco Road > Rapid City, SD 57702 > Office-605.348.2342 > Direct Line-605.593.5063 > Cell-605.391.2733 > Fax:-605.348.0108 > > > > -----Original Message----- > From: Sprinklerforum > [mailto:[email protected]] On Behalf Of > [email protected] > Sent: Monday, January 18, 2016 7:27 AM > To: [email protected] > Subject: RE: Ductile Iron Fittings > > Thanks for all the responses. > > The reason is because NFPA 13 does not include ductile iron (ASME B36.10M) in the acceptable materials table. My opinion is that it is functionally more than adequate. > > Would this be covered by section 1.7 (2016) for alternate arrangements? > > J. Scott Mitchell, PE > Fire Protection Engineer | > Projects Engineering > CNS Pantex | 806.477.5883 | > > > _______________________________________________ > 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.o rg _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
