In MA and RI the it needs to be lined DI not standard DI before the backflow
David Canham Fire Systems Solutions Sent from my iPhone > On Jan 18, 2016, at 4:02 PM, David Autry <[email protected]> wrote: > > 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 > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
