The only thing I have ever been able to find is in the handbook 9-125 18th edition. "Dry-pipe systems should only be used in areas subject to freezing temperatures." I have had an AHJ use this as justification for a slightly different application.
Isn't there something about insulation not being a suitable separation between hazards? I would hate to rely on the insulation being undisturbed throughout the life of the system to prevent freezing. Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Greg McGahan Sent: Friday, July 27, 2007 2:59 PM To: [email protected] Subject: Dry System with Pendents We have an AHJ telling us that we can not use a dry system to feed an unheated attic and the heated space below the ceiling. He is insisting that we use a wet system for the lower area with insulation on top of the piping. We have done this many times in the past but on this project it is very difficult to accomplish this due to the construction. I am having a hard time refuting him with concrete proof that there is nothing wrong with using the dry system with dry pendents. Thanks for any input from the forum. Greg Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 Fax: 850-937-1852 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
