Quote:
Originally Posted by rustyBob
He told me that he had to flair them at the bottom so they would not pull up thruogh the old floor and he did tie it into the existing concrete with rebar that he had to epoxy into the existing cancrete....
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If you do that you are subjecting the concrete to tension loads without any rebar reinforcement. Concrete is very strong in compression, but it sucks in tension.
I would not risk my car, or my life by using a tapered cut to retain the new pour.