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We are pouring 3 ft concrete footings 2 feet deep so 3'x3'x2'deep footings

Why so wide and not very deep? Did you get a plan for this? Any rebar? 18 cu
feet will = .67 cu yd. Means hand mixing. Ready mix trucks usually have a
minimum so you have any more to pour?

I was wondering the dry time would be approximately before we can put load bearing posts on the footing

7 days and make sure to cure it properly.

This is for opening a load bearing wall to the kitchen

Ok, you got permits?

any ideas as to when the footings should have aout 3000psi strength?

28 days

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Tekkie *Please post a follow-up*