SC Concrete Practice Questions - South Carolina Concrete Contractor Examination Exam

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Using the common 24-to-36-times-thickness rule, contraction joints in a 5-inch unreinforced slab-on-ground should be spaced about:

5 to 7 feet on center 20 to 25 feet on center 30 to 36 feet on center 10 to 15 feet on center

Correct Answer:

10 to 15 feet on center

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