Is your Tee on top of your 3'-0 pipe bullheaded or OTR? If your riser is 7'-0 or under-then one flex. coupling at the bottom of a bull headed tee would be sufficient. If it is over 7'-0 in length than we have had to put a short spool piece at the bottom consisting of two F-G pieces with a FC on it then continuing with the DCDA etc. When you put your 4-way brace on, that will stabilize everything or an additional Riser brace may be necessary for piece of mind.
We have also been approved by putting our FC at the top and having our clearance around the pipe per 9.3.4 at the floor where the stub in comes in. Bobby Gillett Project Manager [EMAIL PROTECTED] (731)-424-0130 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charles Thurston Sent: Thursday, September 20, 2007 3:43 PM To: sprinklerforum Subject: NFPA 13 9.3.2.3 Hello sprinklerforum, Has anybody had an AHJ require a flexible coupling within 24" of the floor in a system? How flexible is that coupling going to be with a DCDA Backflow (vertical installation) and then the Alarm Valve sitting on it? I also have flexible couplings on both sides of the T on top of the 3 feet of pipe on top of the alarm valve that he does not consider to be the top of the "rise". Am I that far off base with this? -- Best regards, Charles mailto:[EMAIL PROTECTED] Coastal Fire Protection _______________________________________________ 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)
