My main septic line broke at the elbow coming out from the house. The house is was just built a couple of years ago. Apparently the ground settled, pushing the pipe downward enough to break the elbow itself in two.
I replaced the elbow with a new PVC elbow. Since the pipe coming from the house is cemented in place, and I didn't want to dig up and replace the entire septic line, neither pipe will move. I was forced to join the pipes by pushing the connecting collar up fully on one side, and then pulling it back across (half on each pipe).
This made gluing extremely difficult.
Of course, the one joint I got glued well has a very slow leak (like one drop per flush).
I have two questions.
First, should I rip out the PVC elbow, and instead install flexible elbow with stainless clamps in case the ground continues to settle?
If not, should I pack the joints with plumbers epoxy, or use a silicone based caulk (allowing the joint to flex a little).
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