California Residential Inspector Practice Exam

When fastening 19/32 inch thick wood structural panels used as subfloor sheathing, the use of 8d nails is specified due to the standard requirements for proper loading and strength in construction. The 8d nail, which is approximately 2.5 inches in length, provides sufficient length for penetration into both the subfloor and the underlying framing, ensuring a secure attachment that can withstand the stresses and loads typically encountered in flooring applications. This size of nail effectively balances the need for strength while minimizing potential issues such as splitting the wood panels. Additionally, using the correct size nail is essential for achieving the necessary shear strength and resistance to lifting, which is critical in areas subject to movement or force over time. 8d nails meet these requirements as outlined by building codes and industry standards for subfloor fastening, making them the preferable choice in this scenario.