AWS Blueprint Reading & Symbols 4 — Questions and Answers
Question 1: On a welding symbol, what does a flag symbol at the reference line junction indicate?
- Field weld (Correct answer)
- All-around weld
- Flush contour
- Backing weld
Correct answer: Field weld
A flag (pennant) at the reference line junction indicates the weld is to be made in the field, not in the shop.
Question 2: What does the letter 'R' inside a circle on a welding symbol indicate?
- Removable backing (Correct answer)
- Root opening dimension
- Radius of a groove
- Reverse polarity
Correct answer: Removable backing
The letter 'R' inside a circle on a welding symbol indicates a removable backing strip or ring.
Question 3: In AWS blueprint reading, where is the weld-all-around symbol placed on the welding symbol?
- At the junction of the reference line and arrow (Correct answer)
- At the tail of the reference line
- Above the reference line
- At the end of the reference line opposite the arrow
Correct answer: At the junction of the reference line and arrow
The weld-all-around symbol is a circle placed at the junction of the reference line and the arrow line.
Question 4: A blueprint shows a groove weld symbol with a number '60' and degree symbol above the reference line. What does this represent?
- Groove angle of 60° (Correct answer)
- Weld length of 60 units
- Preheat temperature of 60°F
- Pitch of 60 units
Correct answer: Groove angle of 60°
A number with a degree symbol in or near the groove symbol indicates the included groove angle.
Question 5: On an AWS welding symbol, what information is placed to the LEFT of the weld symbol on the reference line?
- Size or strength of the weld (Correct answer)
- Length of the weld
- Pitch of intermittent welds
- Finish designation
Correct answer: Size or strength of the weld
The weld size (or strength) is placed to the left of the weld symbol on the reference line.
Question 6: Which line type on an engineering drawing is used to show hidden or obscured edges?
- Dashed (hidden) line (Correct answer)
- Center line
- Phantom line
- Section line
Correct answer: Dashed (hidden) line
Dashed lines (hidden lines) represent edges or features that exist behind visible surfaces.
Question 7: A welding symbol shows 3/8 on the left side of a fillet weld symbol and 2-4 to the right. What does '2-4' indicate?
- Weld length of 2 inches with 4-inch pitch (Correct answer)
- 2 passes with 4-inch beads
- Weld every 2 to 4 inches
- 2 welds each 4 inches long
Correct answer: Weld length of 2 inches with 4-inch pitch
In intermittent fillet weld notation, the format length-pitch means weld segments of 2 inches spaced 4 inches on center.
AWS Blueprint Reading & Symbols 4
On a welding symbol, what does a flag symbol at the reference line junction indicate?