Connecting PVC pipe to concrete pipe


Old 08-04-04, 01:05 PM
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Connecting PVC pipe to concrete pipe

I have an underground concrete irrigation pipe in my backyard. Recently, the pipe cracked. I have heard two theories about how to repair the problem. One company joins a PVC to the old concrete pipe with a very rigid technique, using a durable epoxy. This company suggests that a very rigid connection is appropriate. The other company joins the pvc using an epoxy, but also puts a rubberized collar around the joint, explaining that there needs to be some flexibility for movement.

Who is correct? Can anyone send me to any articles, textbooks or treatises to help.


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Old 08-04-04, 05:22 PM
Join Date: Aug 2003
Location: KY/OH
Posts: 3,523
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Depending on the size of the piping that you are dealing with, a Fernco rubber coupling with stainless steel bands to join the 2 dissimilar piping systems is the correct installation.

If you join this piping with rigid material, most likely ground movement, even with backfilling will cause undo stress and result in the connection breaking again.

That is an open invitation for roots to find a source of water, which is not good.
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