When making a structural repair that involves the joining of 0.032-inch and 0.064-inch aluminum sheet, what is the recommended rivet length when drilling with a No. 30 drill?

For a structural repair involving 0.032-inch and 0.064-inch aluminum sheets, the recommended rivet length when using a No. 30 drill is based on the total thickness of the materials being joined, along with the standard practices for rivet selection.

To determine the proper rivet length, one should calculate the combined thickness of both aluminum sheets. In this case, the total thickness is 0.032 inches plus 0.064 inches, which equals 0.096 inches. Typically, the rivet length should be calculated to provide sufficient grip and accommodate the material thickness around the rivet head, while also allowing for the desired expansion of the rivet's shank during installation.

The industry standard for selecting rivet lengths is that the rivet should protrude slightly beyond the total thickness of the materials being joined, allowing for effective deformation during the riveting process. A rivet length of 5/16 inch (or 0.3125 inches) allows for proper engagement within the materials without being overly long, which could introduce weaknesses or installation difficulties.

In this context, 5/16 inch is appropriate because it provides a suitable margin for the rivet to adequately secure the two sheets together while ensuring that the installation