concrete footings

footings for a 12ft.by17ft concrete slab 4″ thick.?
no one can correctly answer that question unless we know exactly what city or county your in. Each city or county can be more strict then the universal building codes, they just can’t less stringent. Call your local building inspectors and ask what is required in your area. Sorry i couldn’t be more exact.
concrete footings being poured in Hyderabad India
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