A joint formed by placing one piece of metal against another at a 90° angle is called a ____.

A joint formed by placing one piece of metal against another at a 90° angle is called a ____.

• A. Lap joint
• B. Butt joint
• C. Tee joint
• D. T-Joint

Answer: (D)

When two pieces meet at a right angle and one end is joined to the face of the other, the shape you get is a T, so the joint is a T-Joint (often called a Tee joint). This arrangement is different from a lap joint, where one piece overlaps the other; a butt joint, where ends butt against each other in the same plane; or an L/corner joint, where pieces meet at a corner along their edges. The T-Joint is the standard name for this perpendicular configuration.

When two pieces meet at a right angle and one end is joined to the face of the other, the shape you get is a T, so the joint is a T-Joint (often called a Tee joint). This arrangement is different from a lap joint, where one piece overlaps the other; a butt joint, where ends butt against each other in the same plane; or an L/corner joint, where pieces meet at a corner along their edges. The T-Joint is the standard name for this perpendicular configuration.