How to tie in old clay drain pipe into new sump pit

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sokolq55

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Replacing small old clay sump pit with a new, larger one. Perimeter drain channels connect to existing pit via clay pipe under the slab. Once I break up the old pit to enlarge the hole, how do I tie in the existing clay pipe to the new pit?

I also worry that, when breaking things up, I may not be able to very cleanly sever the old clay pipe and end up with a jagged mess for the end of those drain pipes. Is there some sort of a longer-ish rubber insert type of a connection that would insert into the clay and expand or is a large fernco on the outside of the clay my only option?

Thanks in advance
 
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John Gayewski

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Fernco is your only option underground. There are some expensive underground no hub bands but why?

You need an angle grinder and a thin masonry wheel to get a clean cut. You could adapt to PVC if you end up breaking some clay.
 

Terry

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Diablo makes some nice sawzall blades that cut clay lines cleanly and easily.
For clay lines that I've coupled to, I went to an outfit that supplies underground utilities. That had the perfect match on hand. The couplings fit perfectly.
 
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