Good point. Based on John's reference to 9.2.6 in the 2016 edition, and specifically 9.2.6.3.2 for short pipe stands, I'm thinking I should be OK without a PE certification as long as I meet all the general requirements of 9.2.6. So we may just need to go back to a very short traditional pipe stand with the U-bolt for restraint.
Larry, for the riser clamp idea, I get what you're saying, but I'm wondering how this would be any different (or worse) than supporting the pipe from a regular ring hanger and a single piece of ATR, which we would normally do if we could support this from the top of the box. We've done this before with smaller pipe in subfloor spaces for pre-action systems, but never for this large a pipe. Our plan was also to use 3/4 or 1" pipe sleeves over the ATR to help reinforce them as well. Benjamin Young On Wed, Mar 14, 2018 at 3:16 PM, Larry Keeping <[email protected]> wrote: > All of the suggestions I've seen in this thread (Fig. 103, Unistrut > clamps, etc.) are good offerings, but don't forget, those things are not > listed, so to use them legitimately they need an engineer's certification, > as per Section 9.1.1.2 of NFPA 13-2013. > > Unless you can get an Eng. Cert. for it, I would avoid the riser clamp > idea. A deluge system will develop some healthy thrust forces up and down > the length of the main, which could bend the vertical support rods. > > Larry Keeping > > -----Original Message----- > From: Sprinklerforum [mailto:[email protected]. > org] On Behalf Of Mike B Morey > Sent: March-14-18 2:49 PM > To: [email protected] > Subject: Re: Supporting pipe in bottom of pre-cast trench > > You might also look at the Anvil 103 depending on space available. > > > > Mike Morey > CFPS 3229 • NICET S.E.T. 123677 > Project Manager • Fire Protection Group > Shambaugh & Son, LP an EMCOR Company > 7614 Opportunity Drive • Fort Wayne, IN • 46825 direct 260.487.7824 / > cell 260.417.0625 / fax 260.487.7991 email [email protected] > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.firesprinkler.org/private.cgi/sprinklerforum-firesprinkler.org/attachments/20180315/fc5849e0/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
