The DI standards for pipes and fittings are listed in Chapt 10, Underground Piping.
Duane Johnson, PE Design Manager Strickland Fire Protection 5113 Berwyn Road College Park, MD 20740 301-474-1136 Office 301-455-0010 Cell -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, January 18, 2016 3:52 PM To: [email protected] Subject: RE: Ductile Iron Fittings 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-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 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
