WCL Joint Design & Weld Symbols 2 — Questions and Answers
Question 1: Which type of groove weld preparation requires beveling ONLY ONE of the two members?
- V-groove
- U-groove
- Bevel groove (Correct answer)
- Square groove
Correct answer: Bevel groove
A bevel groove weld requires only one member to be beveled at an angle, while the other member maintains a square (flat) edge.
Question 2: What is the standard included groove angle typically used in a V-groove butt weld for structural steel per AWS D1.1?
- 30 degrees
- 45 degrees
- 60 degrees (Correct answer)
- 75 degrees
Correct answer: 60 degrees
A 60-degree included angle is the standard for V-groove butt welds in structural steel per AWS D1.1, providing good fusion with acceptable filler metal consumption.
Question 3: What information is placed in the TAIL of an AWS welding symbol?
- The weld size
- The welding process or specification reference (Correct answer)
- The contour finish type
- The root opening dimension
Correct answer: The welding process or specification reference
The tail of a welding symbol contains supplementary information such as the welding process abbreviation, procedure specification number, or special notes.
Question 4: What is the root face (land) in a groove weld joint preparation?
- The total depth of the groove
- The flat unprepared portion remaining at the bottom of the joint (Correct answer)
- The width of the root opening gap
- The bevel angle measurement
Correct answer: The flat unprepared portion remaining at the bottom of the joint
The root face (land) is the flat, square portion of material left at the bottom of the groove preparation, which helps prevent burn-through during welding.
Question 5: Which joint type is formed when two members are placed so that one overlaps the surface of the other?
- Butt joint
- Corner joint
- Lap joint (Correct answer)
- Edge joint
Correct answer: Lap joint
A lap joint is formed when two members overlap each other, typically joined with fillet welds on one or both sides of the overlapping plates.
Question 6: What does a flat contour symbol (a straight horizontal line) above the weld symbol indicate?
- The weld surface should be flush (ground flat) with the base metal (Correct answer)
- The weld is made in the flat position
- The weld is a structural requirement
- The weld bead should be built up above the surface
Correct answer: The weld surface should be flush (ground flat) with the base metal
A flat contour symbol indicates the finished weld face should be flush with the surrounding base metal surface, typically achieved by grinding.
Question 7: In AWS welding symbols for intermittent welds, what does a number placed to the RIGHT of the weld length (after a hyphen) indicate?
- The weld size
- The pitch (center-to-center spacing) between weld segments (Correct answer)
- The root opening
- The total number of welds
Correct answer: The pitch (center-to-center spacing) between weld segments
For intermittent welds, the dimension after the hyphen to the right of the weld symbol represents the pitch — the center-to-center spacing between individual weld segments.
WCL Joint Design & Weld Symbols 2
Which type of groove weld preparation requires beveling ONLY ONE of the two members?