WCL Joint Design & Weld Symbols 1 — Questions and Answers
Question 1: In AWS welding symbols, a weld symbol placed BELOW the reference line indicates the weld should be placed on which side?
- The arrow side (Correct answer)
- The other side
- Both sides
- The field side
Correct answer: The arrow side
A weld symbol below the reference line indicates the weld is on the arrow side — the side the arrow physically points to.
Question 2: What type of weld joint is formed when two members are placed end to end in approximately the same plane?
- T-joint
- Lap joint
- Butt joint (Correct answer)
- Corner joint
Correct answer: Butt joint
A butt joint is formed when two members are aligned end to end (or edge to edge) in the same plane, requiring groove welds.
Question 3: Which symbol represents a fillet weld in AWS welding symbols?
- A right triangle (Correct answer)
- A circle
- A semicircle
- A rectangle
Correct answer: A right triangle
A fillet weld is represented by a right-triangle symbol on the welding symbol, reflecting its triangular cross-sectional shape.
Question 4: On an AWS welding symbol, where is the weld-all-around symbol placed?
- At the tail of the reference line
- At the junction of the arrow and reference line (Correct answer)
- Above the reference line
- Below the reference line
Correct answer: At the junction of the arrow and reference line
The weld-all-around symbol (a small circle) is placed at the junction where the arrow meets the reference line to indicate continuous welding around the entire joint perimeter.
Question 5: What does a flag (pennant) symbol on a welding symbol indicate?
- Weld all around
- Field weld (Correct answer)
- Flush contour finish
- Back weld required
Correct answer: Field weld
A flag or pennant symbol on the welding symbol indicates the weld is to be made in the field (on-site) rather than in the fabrication shop.
Question 6: In a T-joint, at what angle do the two members typically meet?
- 45 degrees
- 60 degrees
- 90 degrees (Correct answer)
- 120 degrees
Correct answer: 90 degrees
A T-joint is formed when one member meets the face of another at approximately 90 degrees, creating a T-shape that is typically joined with fillet welds.
Question 7: On a welding symbol, the number to the LEFT of the fillet weld triangle symbol represents what dimension?
- The weld length
- The weld size (leg length) (Correct answer)
- The number of weld passes
- The electrode diameter
Correct answer: The weld size (leg length)
The number to the left of the weld symbol represents the weld size — for fillet welds, this is the leg length of the triangular cross-section.
WCL Joint Design & Weld Symbols 1
In AWS welding symbols, a weld symbol placed BELOW the reference line indicates the weld should be placed on which side?