Georgia Correctional Officer (CO) Practice Exam

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How many standard vents are needed for a 1,500 square foot crawl space with 100% coverage by a 4 mm vapor barrier?

The correct answer is: 0

In a situation where a crawl space is completely covered by a vapor barrier, it effectively eliminates the need for standard vents for moisture control. The primary function of a vapor barrier is to prevent moisture from the ground from entering the crawl space, thus reducing humidity and the potential for mold and mildew formation. If the vapor barrier is properly installed and covers the entire area, external ventilation becomes unnecessary since there is no ambient moisture source from the soil. As a result, no vents are required, making it appropriate to assign a value of zero to the number of standard vents needed in this scenario. This understanding contrasts with other situations where a vapor barrier might be only partial or nonexistent, necessitating vents to ensure adequate airflow and moisture control.