Replacing underground CI with PVC - backfill?

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Old 06-13-19, 08:55 AM
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Replacing underground CI with PVC - backfill?

In my basement I have a cast iron drain pipe that is rusting through, so it is being replaced with PVC. Because the CI is rusty where it exits the house through the foundation, I am also replacing a short section of it underground.

I've already dug out the hole to access the old pipe and replace it. After it's replaced with solid-wall PVC, should I backfill around the PVC with something other than dirt? It's about 3.5 feet below grade.
 
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Old 06-13-19, 10:13 AM
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Back filling with dirt is fine. Try to firmly pack the dirt down below the pipe so it doesn't settle leaving the pipe unsupported.
 
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Old 06-13-19, 10:14 AM
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Great - that's what I was planning to do. Thanks!
 
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