AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam

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Unless the approved drawings require more, what minimum concrete cover does ACI 318 specify for cast-in-place nonprestressed reinforcement in concrete cast against and permanently exposed to earth?

3/4 inch for any bar size 1 inch for any bar size 3 inches 6 inches for #3 bars only

Correct Answer:

3 inches

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