I have a contractor who insists he wants to bury PVC directly in a
slab. I know this is wrong... the concrete makes both PVC pipe and
cement at fittings brittle, and they fail with the slightest expansion
or contraction. I have looked everywhere on the web for a reference to
substantiate this, but I can find nothing. Can someone please refer me
to such a reference? This is a HUGE issue on this project. Thanks!
First time I am hearing about this regarding PVC. There are expansion
couplings available for movement. What kind of conduit do you prefer to use
in the slab? I hope it's not aluminum.
You could install the conduit below the slab.
Never had any problems with non metallic conducts encased in concrete duct
banks, even a few hundred feet between manholes. Common and done every day.
On Thu, 21 Aug 2008 18:28:20 -0700, <Frank> wrote:
He didn't really say "conduit". If a conduit cracked, no real harm. If
it is a water pipe, big problem.
In a slab the biggest concern might be structural. You will probably
end up with a crack that telegraphs the pipe's path
Thanks for your comments, and yes, I should have been more specific.
The contractor wants to put a 1" water line, regular white PVC for
irrigation, buried directly into the slab... there is a LOT of pipe. I
told him he needs to sleeve it or wrap it, but that it can't be in
direct contact with concrete. He says I am crazy. Do any of you have a
code reference, or manufacturers reference, or something I can show
Fretwell's right; YOU are the one paying for the job and it's to meet
your requirements as long as it doesn't violate code.
Now: Have you contacted your own local zoning and code enforcement
offices? If not, why not? Thαt is always the logical places to start
with; they may have local rules for that exact thing or at least be able
to give you info about it.
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