The method
Before using the result
- Ideal equal-leg triangular fillet: no reinforcement, penetration, starts/stops or oversize allowance. Deposition efficiency is user-supplied, not a consumable recommendation.
Worked examples
These original training examples illustrate the method for Certified Welding Inspector (CWI). Use the matching “Load example” button above to explore a variation; example values are not equipment settings or prescribed criteria.
1. Worked example
Estimate theoretical equal-leg weld metal before applying a supplied deposition efficiency. Separate geometric weld volume from actual consumable purchasing allowances.
- Equal fillet leg size
- 0.006 m
- Total weld length
- 10 m
- Weld metal density
- 7,850 kg/m³
- Estimate consumable mass
- No
- Area = 0.006²/2 = 0.000018 m².
- Volume = 0.000018 × 10 = 0.00018 m³.
- Mass = 0.00018 × 7850 kg.
- Theoretical volume: 0.00018 m³
- Deposited mass: 1.413 kg
2. Comparison example
Compare a different supplied condition using the same method. For Welding Exam, the important check is that the input meaning, units and method assumptions still match the problem.
- Equal fillet leg size
- 0.006 m
- Total weld length
- 15 m
- Weld metal density
- 7,850 kg/m³
- Estimate consumable mass
- No
- Area = 0.006²/2 = 0.000018 m².
- Volume = 0.000018 × 15 = 0.00027 m³.
- Mass = 0.00027 × 7850 kg.
- Theoretical volume: 0.00027 m³
- Deposited mass: 2.1195 kg
Check your understanding
1. Which relationship is used?
Theoretical equal-leg triangular area = leg²/2; volume = area × length; deposited mass = volume × density.
2. Which assumption should you check first?
Ideal equal-leg triangular fillet: no reinforcement, penetration, starts/stops or oversize allowance. Deposition efficiency is user-supplied, not a consumable recommendation.
3. How should you verify a different unit system?
Convert every input to the displayed calculation units first. Equivalent physical inputs must give equivalent results; a unit label alone does not convert a number.
Continue with the matching exam topic
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