Sprigs can stay but the pipe (which I assume are branchlines), must go. ----- Original Message ----- From: Jarron Gass [mailto:[email protected]] Sent: Monday, June 25, 2012 03:40 PM To: [email protected] <[email protected]>; [email protected] <[email protected]> Subject: RE: 3/4" Pipe and Sprigs
This originated with a building my company was looking at for a new owner. The existing building was from the 1930's and has the existence of 3/4" pipe on the end of the pipe scheduled lines as well as some 3/4" sprigs. I was looking for insight on whether the pipe could remain or needed to be changed as well as whether the sprigs could remain. Duane pointed out some sections in NFPA which don't allow pipe smaller than 1" on revamped pipe schedule systems. The info I have received so far tends to lead me to change out all 3/4" pipe, since the system is going to be revamped. Thanks, Jarron Jarron J. Gass - J. & J. Fire Protection Co., Inc. 101 Powell Rd., Butler, PA 16002, (724) 586-6111, fax (724) 586-5151 emergency (724) 898-2481, [email protected], www.jandjfire.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mike Hill Sent: Monday, June 25, 2012 3:29 PM To: [email protected] Subject: RE: 3/4" Pipe and Sprigs I missed the beginning of this conversation. Didn't NFPA-13 add CPVC and copper pipe in the seismic load tables and aren't you allowed to use 3/4" CPVC and copper in some situations? Mike Hill -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Johnson, Duane (NIH/OD/ORS) [C] Sent: Monday, June 25, 2012 2:50 PM To: [email protected] Subject: RE: 3/4" Pipe and Sprigs What I am getting at is if you can't have that to begin with, why make a special paragraph for seismic. Duane Johnson, PE Program Manager Division of the Fire Marshal (Support Contractor) Office of Research Services National Institutes of Health 301-496-0487 "Protecting Science - One Sprinkler at a Time" -----Original Message----- From: Brad Casterline [mailto:[email protected]] Sent: Monday, June 25, 2012 2:18 PM To: [email protected] Subject: RE: 3/4" Pipe and Sprigs It means the .5 or .75 x 0-4 nips are not allowed on re-vamp of existing systems under seismic rules. **************************************************************************** What confuses me is why does the following paragraph exist if 1" pipe is the minimum size for hydraulic systems: 8.15.19.4.5 The use of pipe nipples less than 1 in. (25 mm) in diameter shall not be permitted where seismic design is required on the system. _______________________________________________ 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
