Mike The 2013 edition of NFPA 13 has clarified that this is acceptable. 6.3.1.1.1* Underground pipe shall be permitted to extend into the building through the slab or wall not more than 24 in. (0.6 m).
A.6.3.1.1.1 Extending the underground pipe into a building provides working room to transition to the appropriate aboveground piping. Environmental conditions should be considered as outlined in 24.1.6.1.2. Peter Schwab VP of Purchasing & Engineering Technologies Wayne Automatic Fire Sprinklers Inc. 222 Capitol Court Ocoee, Fl 34761 Mobile: (407) 468-8248 Direct: (407) 877-5570 Fax: (407) 656-8026 www.waynefire.com Celebrating over 34 years of life safety -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Davidson Sent: Wednesday, July 10, 2013 9:10 AM To: [email protected] Subject: RE: Underground Stub-Up Mike, It is my understanding that the HDPE AWWA C906 pipe is not listed for use above ground and the transition from underground to above ground should be made with a DI Class 52 Flange spigot piece with rodding and thrust blocks. Have seen some very large dollar losses where the underground plastic pipe was exposed aboveground (about 6 inches above slab), and was damaged during the pouring of the floor slab or by physical contact. The installation was probability by an underground contractor with no knowledge of the UL and NFPA requirements. As the sprinkler contractor connecting on to the HDPF stub up you are assuming some liability since you have not informed the GC, CM, Owner of the problem in writing. Since the HDPE pipe stub up is before any water flow device a break at the above ground portion of the HDPE pipe can result in a large amount of water flowing before the break is detected. Have a fire safe day. Jim DAVIDSON ASSOCIATES Fire Protection Engineering P. O. Box 4010 Code Consultants Greenville, DE 19807-0010 Medical Gas Systems Engineering (302) 994-9500 Fax (302) 234-1781 CONFIDENTIALITY This report and any attachments are confidential and also may be privileged. If you are not the named recipient, or have otherwise received this report in error, please destroy the report, notify the sender immediately, and do not disclose its contents to any other person, use them for any purpose, or store or copy them in any medium. Thank you for your cooperation. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mike Hairfield Sent: Wednesday, July 10, 2013 8:46 AM To: AFSA SprinklerFORUM Subject: Underground Stub-Up Got a project that HDPE AWWA C906 pipe and fittings were installed. The stub-up through the floor is a piece of HDPE AWWA C906 pipe with a cap fused on the end and not rodded. I've never seen this done before, is it acceptable with NFPA #24? Mike Hairfield _______________________________________________ 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
