Free Certified Welder Blueprint Reading and Symbols Questions and Answers — Questions and Answers
Question 1: On a standard AWS welding symbol, where would you find information specifying the welding process to be used, such as GMAW or FCAW?
- To the left of the weld symbol
- Above the reference line
- In the tail of the symbol (Correct answer)
- To the right of the weld symbol
Correct answer: In the tail of the symbol
The tail of the welding symbol is used to convey supplementary information, including the specific welding process, electrode type, or relevant specifications that are not part of the main symbol elements.
Question 2: A blueprint shows a fillet weld symbol (a right triangle) placed above the solid horizontal reference line. What does this indicate to the welder?
- The weld must be made on the side of the joint that the arrow is pointing to.
- The weld needs to be a specific size indicated above the symbol.
- The weld must be made on the side of the joint opposite from where the arrow is pointing. (Correct answer)
- The weld must be made on both sides of the joint.
Correct answer: The weld must be made on the side of the joint opposite from where the arrow is pointing.
According to AWS standards, information placed above the reference line refers to the 'other side' of the joint, which is the side opposite to where the arrow is pointing. Information below the line refers to the 'arrow side'.
Question 3: A welder is reviewing a blueprint for an on-site construction project. They notice a symbol that looks like a small flag at the junction of the arrow and the reference line. What does this 'field weld' symbol signify?
- The weld requires special inspection.
- The weld must be completed at the construction site, not in the fabrication shop. (Correct answer)
- The weld must be made in a specific sequence.
- The weld is critical and must be performed by a senior welder.
Correct answer: The weld must be completed at the construction site, not in the fabrication shop.
The field weld symbol, which resembles a flag, indicates that the weld is to be made 'in the field'—that is, at the location of final assembly or erection—rather than in the initial fabrication shop.
Question 4: When interpreting a symbol for an intermittent fillet weld, two numbers are shown to the right of the weld symbol, such as '2-6'. What does the second number ('6') represent?
- The total number of welds required.
- The length of the space between the welds.
- The center-to-center spacing, or pitch, of the welds. (Correct answer)
- The size of the weld leg in millimeters.
Correct answer: The center-to-center spacing, or pitch, of the welds.
For an intermittent weld, the numbers to the right of the symbol denote the length and pitch. The first number is the length of each weld segment, and the second number is the pitch, which is the distance from the center of one weld to the center of the next.
Question 5: Which of the following supplementary symbols, a circle at the intersection of the reference line and arrow, instructs the welder to perform the weld completely around the entire joint?
- Field Weld symbol
- Melt-Through symbol
- Backing Weld symbol
- Weld-All-Around symbol (Correct answer)
Correct answer: Weld-All-Around symbol
The Weld-All-Around symbol is a circle placed at the junction of the reference line and the arrow. It indicates that the specified weld must extend continuously around the entire perimeter of the joint.
Question 6: A blueprint calls for a V-groove weld. The symbol includes the numbers '1/2 (5/8)' to the left of the V-groove symbol. What does the number in the parentheses, (5/8), typically represent?
- The root opening of the joint.
- The groove angle in degrees.
- The effective throat thickness required for the weld. (Correct answer)
- The length of the required weld.
Correct answer: The effective throat thickness required for the weld.
In a groove weld symbol, a dimension to the left indicates the depth of preparation. When a second number is shown in parentheses, it specifies the required effective throat, which is the fusion penetration needed for the weld's strength.
Free Certified Welder Blueprint Reading and Symbols Questions and Answers
On a standard AWS welding symbol, where would you find information specifying the welding process to be used, such as GMAW or FCAW?