Originally Posted By: Thomas Tracy
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My foundation was just poured (10 inch concrete w/ vertical and horizontal rebar). I live in NE Pennsylvania. The temperatures were in the high 30’s to low 40’s at the time of the pour. That night it got down to about 18-20. I was apprehensive but the GC said everything would be fine and they would cover the forms with plastic which i realize has no insulative properties. The temp was in the single digits approx. 72 hours after the pour.
Now I see a continuous crack about six feet high on a nine foot wall (for lack of a better word because to me it looks like a surface crumbling that is not too deep) around the whole interior foundation wall except for one section. It is more noticeable in some spots than in others. The GC says this is because there were two pours- one about an hour and a half after the other and this is where the first pour melded with the second pour. There is no bulging or bowing nor is there any offset.
I am naturally suspicious although the GC has a sterling reputation. Can someone advise me? Merely a homeowner who knows very little... Thanks!