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
