Coastal and Floodplain Construction Inspector's Practice Exam

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What is the maximum allowable moisture content for preservative-treated wood before it is covered with insulation?

  1. 15%

  2. 19%

  3. 25%

  4. 30%

The correct answer is: 19%

The maximum allowable moisture content for preservative-treated wood before it is covered with insulation is set at 19%. This limit is established to prevent issues such as decay and fungal growth, which can occur if the moisture content exceeds a certain threshold. When wood is treated with preservatives, it can retain moisture, but covering it with insulation while it still has excessive moisture may trap moisture against the wood, leading to deterioration and compromising the effectiveness of the preservative. By maintaining a moisture content at or below 19%, inspectors ensure that the treated wood remains viable and protected against environmental factors that can lead to structural issues. This moisture threshold is critical for ensuring the longevity and integrity of the wood in coastal and floodplain environments, where exposure to moisture is increased.

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