in places you don't have to worry about frozen earth, the sewage can be as shallow as a couple of feet. It's not a big job to dig up and replace. But in cold places the sewage has to be deep enough to avoid freezing. For example, I had a couple of digs that went to 8 ft below...Now that's more than a permit from the town or city, this gets into the OSHA regulation territory...
this depends on where you live and how cold the winter gets.
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我在南边,12月底和一月初有时会下点雪,整体冬天有个别天会很冷,但多数时候不冷。这次换就换PVC不怕冻的
-red_flower-
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01/08/2023 postreply
15:12:29
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then you will be looking at maximum depth of about 3ft. Easy
-borisg-
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01/08/2023 postreply
15:22:14
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好,谢谢
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01/08/2023 postreply
17:46:17