North Carolina Residential Code Practice Test

Question: 1 / 400

For each how many square feet of crawl space ground area is the minimum ventilation calculated?

100

150

The minimum ventilation for crawl spaces is calculated based on an area of 150 square feet. This standard is established to ensure proper air circulation, which is vital for preventing moisture buildup and reducing the risk of mold growth and wood decay in the crawl space. Adequate ventilation helps maintain a stable environment in the home, improving overall air quality and protecting structural integrity. The formula is typically that for each square foot of ground area in the crawl space, a certain amount of ventilation area is required, and this requirement is informed by the size of the crawl space.

Understanding this requirement is pivotal for builders and homeowners to maintain compliant and healthy residential environments.

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200

250

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