Coastal and Floodplain Construction Inspector's Practice Exam

Which of the following is a requirement for preservative-treated wood used in permanent structures?

1. Must be painted before use

2. Must conform to AWPA Standard U1

3. Must have a natural moisture content of 25% or more

4. Must be untreated in enclosed locations

The correct answer is: Must conform to AWPA Standard U1

The requirement for preservative-treated wood used in permanent structures is that it must conform to AWPA Standard U1. This standard outlines the specifications for treating wood with preservatives to ensure durability, protection against decay and insect damage, and overall performance in various environmental conditions. By adhering to the AWPA Standard U1, the wood undergoes a process that makes it suitable for its intended use in permanent installations, especially those exposed to moisture or soil contact. The other options fall short of representing established industry standards. For instance, painting the wood before use is not a requirement; while it can provide additional protection, it does not replace the need for proper treatment. A natural moisture content of 25% or more suggests potential for decay rather than compliance with standards for treated wood. Additionally, the notion that it must be untreated in enclosed locations is not aligned with the requirements; treated wood can be used in these areas provided it is compliant with the relevant standards.