Greg, We've been using 2: hole straps with 1/4" powder driven studs for "Decades" here in South Florida. Check the hanger listing material for the CPVC pipe you are using. You have to hang this stuff every 6 feet and I don't think you have to add the 250# if you check the listing. Get in first and run tight to the slab...like electrical conduit. John W. Farabee
On Friday, July 1, 2016 4:34 PM, Greg McGahan <[email protected]> wrote: I have spent hours researching various methods of hanging CPVC to concrete slabs.Other than a traditional drop in anchor and all thread rod, there is not really a viable alternative. Points of interest: 1) removing the bonnet from a hang ring voids the listing.2) Hanger rings without the bonnet (from the factory) are not listed for cpvc3) One hole straps cannot be used to hang pipe upside down from the slab.4) Two hole straps cannot be attached with 3/8" bolts or rods without modification to the hole size - which voids the listing.5) Two hole straps cannot be hung with powder driving pins in post tension slabs because there is a max hanger depth of 3/4" - the highest rating we found was exactly 125 lbs...so even with 2 of them you do not meet the "250 lbs plus 5x the weight of the water filled pipe" requirement. It would seem that we are well behind the times in addressing this issue as an industry. Just noting.... Greg McGahan Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 fax 850-937-1852 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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