AWS Certified Welding Inspector — FundamentalsWelding SymbolsHard
A welding inspector is reviewing a blueprint for a structural component that requires a plug weld. The welding symbol shows a circle representing the plug weld. Inside the circle, there is a number '15'. To the right of the circle, there is a number '25' followed by 'X' and then '8'. What does the '15' inside the plug weld symbol signify?
- AThe depth of filling for the plug weld.
- BThe pitch between plug welds.
- CThe diameter of the plug weld.
- DThe number of plug welds required.
Show answer & explanationAnswer & explanation
Correct answer: A. The depth of filling for the plug weld.
For a plug weld symbol, a number placed inside the circle indicates the depth of filling of the plug weld. The diameter is typically shown to the left of the circle, and the number of welds and pitch are shown to the right.
Why the other options are wrong
- B. The pitch (25) is shown to the right of the symbol, after the number of welds (8).
- C. The diameter would typically be shown to the left of the plug weld symbol.
- D. The number of welds (8) is shown to the right of the symbol, preceding the pitch.
Plug Weld Depth of Filling
For a plug weld symbol, the depth of filling is indicated by a dimension placed inside the circle representing the plug weld.
- Dimension inside the circle.
- Represents the depth of fill.
- Different from diameter, pitch, or quantity.
Memory trick: Inside the hole is how 'deep' it goes.