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  #11  
Old 10-26-2012, 02:01 PM
rlitman rlitman is offline
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Location: Long Island
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Quote:
Originally Posted by Wet_Boots View Post
I would think the foam-core stuff is DWV pipe. No big pressure worries there.
It is. Sch 40 only refers to the dimensions. The DWV pipe isn't meant to withstand as much pressure, but I believe the concerns raised by the OP were related to the collapse of the hole. Regardless of the pressure the pipe is rated to contain, a solid PVC pipe will withstand more crushing pressure from above than a foam core one.
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  #12  
Old 10-26-2012, 08:18 PM
Mdirrigation Mdirrigation is offline
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The foam core pipe will handle the pressure of being backfilled and driven across , thats what we used all the time for sewer tie ins , after we burried it 5 feet in the ground , we drove over it with the backhoe , never a problem.
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  #13  
Old 10-26-2012, 08:51 PM
Kiril Kiril is offline
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Quote:
Originally Posted by rlitman View Post
It is. Sch 40 only refers to the dimensions.
Errrrrr, I think you mean wall thickness.
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