What is the minimum size requirement for a ridge board?

The minimum size requirement for a ridge board is established in building codes to ensure it can adequately support the roof structure. A ridge board, typically used in the framing of gable roofs, is designed to provide a structural element that the rafters can connect to at the peak of the roof.

The correct answer, which states that the minimum size requirement is 1 inch nominal, meets the standard that is often cited in code guidelines. This thickness is sufficient to ensure structural integrity while allowing for a lightweight framework. Using a nominal thickness of 1 inch allows for proper attachment of rafters, providing a stable connection without unnecessarily adding weight to the roofing system.

While other options may suggest thicker ridge boards, they exceed the minimum requirement and are often used in specific situations where additional strength is necessary. However, for standard construction practices, a 1-inch nominal ridge board is adequate for most residential applications.