The best way to address it is to take the AHJ to the sections in 13 that call out restraint. With a smile, explain that there are no listed restraints for this application because the purpose is to prevent lateral movement but not to supply bracing. Per the standard restraint is a "lesser degree" and that standard hanger materials may be used as one of several options including the use of 12 ga. wire. Since you have used one of the options it should become self explanatory.
Thank you, Bob Knight, CET III 208-318-3057 _____ From: Sprinklerforum [mailto:[email protected]] On Behalf Of Taylor Schumacher Sent: Thursday, June 09, 2016 3:59 PM To: [email protected]; [email protected] Subject: RE: Lateral support for sprigs That's exactly how I interpreted it. That assembly prevents the pipe from moving at the grooved coupling on the main as is required to keep the head within the design criteria. Just have never been questioned on it and am wondering if anyone else has. And if so, what is the best solution. TAYLOR SCHUMACHER Security Fire Sprinkler P 320.656.0847 | F 320.656.0312 | E [email protected] From: Sprinklerforum [mailto:[email protected]] On Behalf Of Bob Sent: Thursday, June 09, 2016 3:45 PM To: [email protected] Subject: RE: Lateral support for sprigs All that is required is "restraint". That can be 12 ga. wire if you so choose. Look at NFPA 13, 2013 ed., 9.2.3.7 & the Annex material for it. The same criteria goes back two or three editions. Thank you, Bob Knight, CET III 208-318-3057 _____ From: Sprinklerforum [mailto:[email protected]] On Behalf Of Taylor Schumacher Sent: Thursday, June 09, 2016 1:57 PM To: [email protected] Subject: Lateral support for sprigs I have an AHJ in Iowa (non-seismic) looking for a listing for lateral supports on sprigs in an attic. We have sprigs for back to back attic sprinklers running from the main to the peak of the roof and have them supported with loop hanger ring-rod-and threaded fastener. I cannot find anything that requires a listing for this assembly nor can I find any listing for something like this. Any help would be appreciated. TAYLOR SCHUMACHER Security Fire Sprinkler P 320.656.0847 | F 320.656.0312 | E [email protected]
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