The other issue is the lack of listing for C900 pipe above grade. But we've had our plans 'over-ruled' by sympathetic AHJs who were tired of hearing the underground contractor whine about the difficulties of replacing pipe that was installed incorrectly. In one case, the plastic pipe rose up through the floor a couple feet and the concrete slab was poured in direct contact with the pipe. We're not in a seismic area here, but minor settling will place some serious strain on that pipe and/or elbow below. The AHJ allowed the pipe to remain, but the contractor was to install a schedule 40 sleeve around it; it was to allow for settling as well as protect the plastic from mechanical damage.
Again, this may or may not be 'good enough' to protect the plastic pipe from damage, but is still does not address the lack of listing for above ground use. Mark Sornsin Fargo -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Greenman Sent: Monday, August 25, 2008 3:21 PM To: [email protected] Subject: Re: 13, 2007 23.1.6.1.2 Would it be possible to sleeve the plastic from say 18" or so below grade to the flange? Seems like mechanical protection is the issue. On Mon, Aug 25, 2008 at 1:11 PM, Ed Kramer <[EMAIL PROTECTED]> wrote: > Interestingly, at least one company (Uni-Flange) makes an adapter flange for > C900 pipe (http://www.uniflange.com/ucats/ufa900.pdf). > Appropriate listings may be a problem, but I know it's been used on fire > lines. > > Ed Kramer > Littleton, CO > > > > >> Then the rise from the base elbow must always be metallic pipe. How >> would >> you go from PVC to steel above the floor if you don't have a flange or a >> groove to work with? >> >> Art/ATCO > > _______________________________________________ > 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) > -- Ron Greenman at home.... _______________________________________________ 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)
