AWS Blueprint Reading & Interpretation 3 — Questions and Answers
Question 1: What does a circle at the intersection of the arrow and reference line on a welding symbol indicate?
- Weld all around the joint (Correct answer)
- Inspect the weld with RT
- The weld is on both sides
- Preheat required
Correct answer: Weld all around the joint
A circle at the junction of the arrow and reference line indicates an 'all-around' weld, meaning the weld continues around the entire perimeter of the joint.
Question 2: On a drawing, what does the abbreviation 'TYP' mean when placed next to a dimension?
- Total yield point
- Typical — applies to all similar features (Correct answer)
- Top of yoke plate
- Type of weld
Correct answer: Typical — applies to all similar features
'TYP' means typical, indicating that the dimension or feature applies to all identical or similar features throughout the drawing.
Question 3: In a weld joint detail, what does 'CJP' stand for?
- Continuous joint preparation
- Complete joint penetration (Correct answer)
- Controlled joint profile
- Concave joint pass
Correct answer: Complete joint penetration
CJP stands for Complete Joint Penetration, meaning the weld metal must extend through the full thickness of the base metal.
Question 4: What is a 'detail drawing' in the context of structural welding blueprints?
- A drawing showing the overall project layout
- An enlarged view showing specific joint or component dimensions clearly (Correct answer)
- A list of all materials and quantities
- A drawing used only for field reference
Correct answer: An enlarged view showing specific joint or component dimensions clearly
A detail drawing provides an enlarged, dimensioned view of a specific component or joint that cannot be adequately shown at the overall drawing scale.
Question 5: On an isometric drawing, all three axes are drawn at what angle to the horizontal?
- 45°
- 30° (Correct answer)
- 60°
- 90°
Correct answer: 30°
In isometric drawings, the three principal axes are drawn at 30° to the horizontal, giving the illusion of a 3D object on a 2D surface.
Question 6: What does PJP stand for in welding blueprint terminology?
- Post-joint preparation
- Partial joint penetration (Correct answer)
- Pre-joint procedure
- Pipe joint pass
Correct answer: Partial joint penetration
PJP stands for Partial Joint Penetration, indicating that the weld does not extend through the full thickness of the base material.
Question 7: On a blueprint, what does a 'section view' accomplish that a regular view cannot?
- Shows the exterior profile of the part
- Reveals internal features by showing a cross-section cut through the part (Correct answer)
- Provides the overall dimensions of the assembly
- Shows the finish requirements
Correct answer: Reveals internal features by showing a cross-section cut through the part
A section view cuts through a part along an imaginary plane to reveal internal shapes, hollow areas, or features that would otherwise be hidden.
AWS Blueprint Reading & Interpretation 3
What does a circle at the intersection of the arrow and reference line on a welding symbol indicate?