What are the five joint types?

What are the five joint types?

• A. Butt, Corner, Tee, Edge, Lap
• B. Butt, Corner, Tee, Edge, Fillet
• C. Butt, Corner, Tee, Lap, Fillet
• D. Butt, Corner, Edge, Lap, Edge

Answer: (A)

Think of the basic welding joints as the ways two pieces can come together. The five fundamental joint configurations are Butt (end-to-end), Corner (meeting at a corner), Tee (one piece attached to the side of another, forming a T), Lap (one piece overlapped on another), and Edge (joined along the edge). Fillet is the weld bead type used to fill the joint, not a joint configuration itself, so it isn’t counted among the basic joint types. The option that lists Butt, Corner, Tee, Edge, and Lap covers exactly these five joints and excludes fillet, making it the best choice.

Think of the basic welding joints as the ways two pieces can come together. The five fundamental joint configurations are Butt (end-to-end), Corner (meeting at a corner), Tee (one piece attached to the side of another, forming a T), Lap (one piece overlapped on another), and Edge (joined along the edge). Fillet is the weld bead type used to fill the joint, not a joint configuration itself, so it isn’t counted among the basic joint types. The option that lists Butt, Corner, Tee, Edge, and Lap covers exactly these five joints and excludes fillet, making it the best choice.