AL Building Under 4 Stories Practice Questions - Alabama Building Contractor Under Four Stories Examination Exam

What is the primary purpose of a vapor retarder under an interior concrete slab-on-grade?

To increase the slab's compressive strength To reduce moisture vapor transmission from the soil into the building To act as the sole reinforcement for the slab To eliminate the need for a granular base course

Correct Answer:

To reduce moisture vapor transmission from the soil into the building

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