ACI Concrete Flatwork Finishing Certification Practice Test

Question: 1 / 400

What is the typical minimum required coverage for reinforcing bars in a slab?

1 inch

1.5 inches

The typical minimum required coverage for reinforcing bars in a slab is based on ensuring adequate protection to the steel, preventing corrosion, and allowing for proper concrete bonding. One and a half inches of cover usually satisfies these requirements in most applications, particularly for normal environments. This coverage helps in providing a sufficient barrier against environmental elements while also allowing for proper concrete flow around the bars to enhance structural integrity.

In certain situations, the requirements may vary based on environmental conditions, such as exposure to chlorides or other corrosive elements, which could necessitate greater coverage. Nevertheless, for standard conditions, one and a half inches is a commonly accepted minimum to balance structural performance and protection of the reinforcing steel.

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2 inches

2.5 inches

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