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BladepullerBladepuller
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It may be that the solution is to:

1) Carefully chip the concrete away from around the cast iron to expose the failed section.

2) Rubber boots are made to facilitate transitions from one type of material to another. A Fernco. It tightens with SS screw clamps. Big hose clamps, in other words.

I have seen cast iron no- hub pipe occasionally used as sanitary (underground) pipe but PVC is so much more slippery. As for sanitary risers cast is nice and I have had it used as vent in certain return air plenums on commercial jobs. The thing with cast iron is weight, labor $, that it doesn’t get used much any more.