Coastal and Floodplain Construction Inspector's Practice Exam

What is the minimum diameter of bolts for timber piles used in connections?

1. 1/2 inch

2. 5/8 inch

3. 3/4 inch

4. 1 inch

The correct answer is: 5/8 inch

The minimum diameter of bolts for timber piles used in connections is set at 5/8 inch to ensure sufficient strength and load-carrying capacity in structural applications. Timber piles can face various forces, including tension, compression, and shear, especially in coastal and floodplain environments where they are subject to dynamic loads from wind and water. Using a bolt diameter of 5/8 inch strikes a balance between adequate strength for structural integrity and practical considerations in construction. Smaller diameters may not provide the necessary resistance to potential pull-out or shear forces, while larger diameters might be unnecessarily heavy and costly, and can complicate installation. This choice reflects standard practice in the field, ensuring that connections remain secure during the lifespan of the structure amidst the stresses imposed by the environment. The other diameters offered might exceed typical requirements or fail to meet necessary strength standards, leading to inefficiencies or vulnerabilities in construction practices.