In a ____, the edges of the two metals to be joined overlap. What is this joint called?

In a ____, the edges of the two metals to be joined overlap. What is this joint called?

• A. Lap joint
• B. Butt joint
• C. Tee joint
• D. Corner joint

Answer: (A)

Overlapping edges indicate a lap joint. In this arrangement, one piece of metal sits over the other, so their edges extend past the joint to create an overlap, and the weld runs along the overlapping seam to fuse them together. The lap joint gives a longer weld length than a butt joint, which helps distribute the load more across the weld and is convenient for joining thin materials. But it also doubles the thickness at the weld area and can trap moisture if not sealed properly. Other joint types involve edges that meet flush (butt), form a T with one piece extending into the other (tee), or meet at a corner to form an L shape (corner), none of which feature overlapping edges.

Overlapping edges indicate a lap joint. In this arrangement, one piece of metal sits over the other, so their edges extend past the joint to create an overlap, and the weld runs along the overlapping seam to fuse them together. The lap joint gives a longer weld length than a butt joint, which helps distribute the load more across the weld and is convenient for joining thin materials. But it also doubles the thickness at the weld area and can trap moisture if not sealed properly. Other joint types involve edges that meet flush (butt), form a T with one piece extending into the other (tee), or meet at a corner to form an L shape (corner), none of which feature overlapping edges.