AWS AWS Joint Design & Weld Symbols 1 — Questions and Answers
Question 1: What are the five basic weld joint types recognized by AWS?
- Butt, corner, T-joint, lap, and edge (Correct answer)
- Butt, fillet, groove, plug, and slot
- Single-V, double-V, J-groove, U-groove, and square
- Tee, cross, angle, offset, and butt
Correct answer: Butt, corner, T-joint, lap, and edge
AWS recognizes five basic joint types: butt, corner, T-joint, lap, and edge joints.
Question 2: In a butt joint, the two pieces of metal are positioned:
- At a 90-degree angle to each other
- Overlapping each other
- In the same plane, end to end (Correct answer)
- One on top of the other
Correct answer: In the same plane, end to end
A butt joint is formed when two pieces of metal are placed in the same plane with their edges joined end to end.
Question 3: A T-joint is formed when:
- Two pieces meet at a 45-degree angle
- One piece is perpendicular to the surface of another (Correct answer)
- Two pieces overlap at their edges
- Two pieces are joined at their corners
Correct answer: One piece is perpendicular to the surface of another
A T-joint is created when the edge of one piece is joined to the face of another piece at approximately 90 degrees.
Question 4: Which joint type is formed when two pieces are placed parallel to each other with their surfaces overlapping?
- Corner joint
- Edge joint
- T-joint
- Lap joint (Correct answer)
Correct answer: Lap joint
A lap joint is formed when two pieces are parallel and overlapping, welded along the edge of one or both pieces.
Question 5: An edge joint is best suited for which application?
- Structural load-bearing connections
- Thin sheet metal where the pieces are parallel and adjacent (Correct answer)
- Heavy plate connections under dynamic loads
- Pressure vessel construction
Correct answer: Thin sheet metal where the pieces are parallel and adjacent
Edge joints are typically used for thin sheet metal where two parallel pieces are joined along their edges and are not subject to heavy loads.
Question 6: Which of the following is NOT one of the five basic AWS joint types?
- Lap joint
- Corner joint
- Plug joint (Correct answer)
- Edge joint
Correct answer: Plug joint
Plug joint is not a basic joint type; the five basic AWS joint types are butt, corner, T-joint, lap, and edge.
AWS AWS Joint Design & Weld Symbols 1
What are the five basic weld joint types recognized by AWS?