Thanks Todd, now I'm thinking about Pope nipples!
Benjamin Young On Fri, Jan 17, 2014 at 8:52 PM, Todd - Work <[email protected]> wrote: > Charles, it was just a change in wording. The restriction is in 2010 and > several years before. > > Ron, I'm very glad you made your spelling slip on schedules and not > nipples. > > Todd G Williams, PE > Fire Protection Design/Consulting > Stonington, CT > www.fpdc.com > 860-535-2080 (ofc) > > > On Jan 17, 2014, at 6:52 PM, Charles Thurston <[email protected]> > wrote: > > > > Hello Ron, > > > > Yes Ron that started the thread, I just use it as a transition. I > thought they were, but several industrial plumbing shops in Wilmington were > unable to find them for me. > > > > Todd > > > > NFPA 13 2013 > > > > 8.15.20.5 Revamping of Hydraulic Design Systems. > > > > 8.15.20.5.1 When hydraulically designed systems are re- > > vamped, any existing bushing shall be removed and a nipple > > not exceeding 4 in. (100 mm) in length shall be permitted to > > be installed in the branch line fitting. > > > > 8.15.20.5.2* Calculations shall be provided to verify that the > > system design flow rate will be achieved. > > > > 8.15.20.5.3 When it is necessary to pipe two new ceiling sprinklers > > from an existing outlet in an overhead system, any bushings > > shall be removed and the use of a nipple not exceeding 4 in. > > (100 mm) in length and of the same pipe thread size as the existing > > outlet shall be permitted, provided that a hydraulic calculation > > verifies that the design flow rate will be achieved. > > > > | 8.15.20.5.4 Where an armover is attached to connect to a > > | sprinkler, 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. > > > > I don't have my 2010 here to see if 8.15.20.5.3 is in it, But 2013 shows > it as a change. This was permitted and started under the 2010 code. > > > > Yes we seismic brace in the Myrtle Beach Area. > > > > This is an existing system. 1 1/2" branch with 1/2" outlet "T"s for > heads, They added a L/O ceiling 6" below the top of the pipe in the parking > deck. Now need to nipple over to a Dry Wax Over Lead (Local Ordnance) Dry > Head. Another contractor submitted plans, calcs and got a permit for this a > 1/2" Close, 1/2" x 1" 90, 1' Close nipple, 1" T with plug for the head. The > other contractor's foreman smarted off to one of the owners and they got > thrown off the site. Material is all there, Just need the labor to put it > in. > > > > Friday, January 17, 2014, 5:33:21 PM, you wrote: > > > >> I thought this was about using 1" st ells in a tight spot, not > >> changing uprights to pendants. And of course you can use them and > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
