Coastal and Floodplain Construction Inspector's Practice Exam

What is the minimum size nail recommended for fastening sheathing panels according to the Home Builder's Guide?

1. 6d (2.0")

2. 8d (2.5")

3. 10d (3.0")

4. 12d (3.5")

The correct answer is: 8d (2.5")

The recommended minimum size nail for fastening sheathing panels according to the Home Builder's Guide is 8d (2.5 inches). This recommendation stems from the need for adequate holding power to ensure that the sheathing is securely attached to the framing, which helps maintain the integrity and stability of the structure during both construction and its operational lifespan. Using 8d nails provides a balance of length and diameter that allows for effective penetration into the framing members without excessive splitting or damage. This size is also compliant with building codes and best practices designed to enhance durability, particularly in coastal and floodplain construction where exposure to adverse weather conditions is frequent. It's important to follow these guidelines, as they are derived from extensive research and practical experience in construction practices. The other sizes listed—6d, 10d, and 12d—while potentially usable in various contexts, do not meet the minimum recommendations for sheathing fastening and may not provide the necessary structural support required by building standards for safety and longevity.