What is the minimum number of nails required to attach lateral restraint and diagonal bracing at each connection?

The correct choice reflects the structural requirements for ensuring adequate lateral restraint and diagonal bracing connections. Using 2-16d nails provides the necessary strength and holding power to secure these components effectively against lateral forces, such as wind or seismic loads.

In construction, the diameter and length of nails (denoted by 'd') influence their load-carrying capacity. The 16d nail is specifically designed for heavy-duty applications, and using two of them enhances the connection's overall stability and strength. This is particularly important in structural applications where reliable connections can prevent failure in critical situations.

While smaller nails, such as the 8d or 10d options, may be sufficient for less demanding connections, they do not provide the same level of security as the larger 16d nails. In contexts where lateral restraint is crucial, the increased size and number of nails ensure that the elements remain securely fastened, thereby contributing to the overall integrity of the structure. Additionally, building codes and engineering practices often specify these types of requirements to enhance safety and performance.