What is a lap joint?

A lap joint refers to the method in which one plate overlaps another plate before they are connected. This type of joint is commonly used in various engineering applications because it allows for a larger surface area for adhesion or welding, which can enhance the structural integrity of the connection. The overlapping feature helps distribute stresses more evenly and can accommodate slight misalignments between the two plates.

In addition to increased strength, lap joints can be easier to manufacture since they do not require precise alignment to ensure a strong bond. This makes them a popular choice in contexts where plates are subject to dynamic loads or when fabrication tolerances are less stringent.

The other options describe different types of joints that don't match the characteristics of a lap joint. When two plates are joined end to end, it is typically referred to as a butt joint. Welding plates from the side or folding and joining a plate pertain to other joining methods that are not defined as lap joints.