Interior Design Professional Practice Exam

Category - Interior Design Practice Exam

The minimum allowable thickness for a concrete slab is _____ when it is supported directly by the ground.
  1. 3 inches
  2. 4 inches
  3. 5 inches
  4. 6 inches
Explanation
Answer: B - The minimum allowable thickness for a concrete slab is 4 inches when it is supported directly by the ground.
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