Which joint configuration involves two overlapping members positioned in parallel planes?

The joint configuration that involves two overlapping members positioned in parallel planes is known as a lap joint. This type of joint is commonly used in MIG welding where the edges of one plate overlap another, allowing for welding along the seams of the overlapping area.

Lap joints are beneficial because they provide a large surface area for welding, which can lead to stronger welds compared to joints that do not offer overlap. They also allow for easier alignment of the materials being joined, making it simpler to set up the weld. The design of a lap joint facilitates the absorption of stress and provides good durability in many applications.

In contrast, an edge joint typically consists of two plates positioned edge-to-edge, a butt joint has two pieces of metal aligned end-to-end, and a corner joint involves two plates arranged at right angles to each other. Each of these configurations serves different purposes and has distinct characteristics that make them suitable for different types of welding applications.