To determine the total length of a solid rivet for a specific installation, what should be added together?

The total length of a solid rivet for a specific installation is determined by the grip length plus 1.5 times the diameter of the rivet. This approach accounts for both the material thickness being joined (the grip length) and ensures that there is sufficient length for proper deformation during the installation process, allowing for optimal filling of the joint and secure fastening.

The grip length is the distance from the surface of the material on one side of the joint to the surface on the opposite side being riveted. However, just adding the grip length and a single dimension like the shank length or head size wouldn't account for the material the rivet needs to adequately secure itself within the joint. By applying the factor of 1.5 times the rivet's diameter, the installation is optimized for strength and stability, helping to provide a better mechanical lock once the rivet is installed. This larger dimension ensures that there is enough rivet length to form a proper shop head, which is crucial for the performance of the fastener.

In summary, understanding the interaction of these measurements helps ensure that rivets are used effectively in aircraft structures, contributing to safety and structural integrity.