Schedule 40 is standard weight up through 10" pipe sizing per the Machinery's Handbook 26th Edition Pipe and Pipe Fittings Table 1. American National Standard Weights and Dimensions of Welded and Seamless Wrought Steel Pipe ANSI/ASME B36.10M-1995. DoD guidelines required schedule 40 piping in many applications and require grooving to be cut, not rolled, something that cannot be done with schedule 10.
Ryan Hinson Burns & McDonnell Direct: 952-656-3662 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of George Church Sent: Tuesday, November 29, 2011 8:46 AM To: [email protected] Subject: RE: STANDARD WEIGHT RISER PIPE There is no requirement in 13 for a riser to be Schedule 40. The EOR must be wanting to increase the robustness of the riser for some other reason. Hopefully he doesn't require threaded joints or there may be some guys looking for larger wrenches than they're used to using (and maybe some larger muscles than they have). While some might quibble that "standard weight" could now be argued to be Sch 10 for sprinkler mains and risers based on industry usage, I don't think they'd win an argument with the EOR that when he said standard weight, he meant Sch 40. George L. Church, Jr., CET Rowe Sprinkler Systems, Inc. PO Box 407, Middleburg, PA 17842 877-324-ROWE 570-837-6335 fax [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, November 29, 2011 8:29 AM To: [email protected] Subject: STANDARD WEIGHT RISER PIPE In the spec it states; "Each vertical water supply riser shall be standard weight pipe from grade floor level at entry of feed main into building up to the highest horizontal cross main." What is that supposed to mean? I've had more contractor confusion over that statement and I've been trying to find if there's a requirement for the riser to be Schedule 40 instead of allowing it to be Schedule 10 within the NFPA 13 Standard. So far I haven't found anything that dictates pipe weight for a riser. Anyone have any insight to offer? Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
