A CWI encounters a welding symbol that includes an intermittent fillet weld. The symbol indicates '6 @ 100' to the right of the fillet weld symbol, with a leg size of 8mm. What does the '6 @ 100' represent for this intermittent weld?
- AA 6mm weld size with a 100mm length.
- BSix weld segments, each 100mm long.
- CSix weld segments with a 100mm pitch between centers.
- DA 6mm weld length with a 100mm pitch.
Show answer & explanationAnswer & explanation
Correct answer: C. Six weld segments with a 100mm pitch between centers.
For intermittent fillet welds, the notation to the right of the weld symbol indicates the length of each weld segment followed by the pitch (center-to-center spacing) separated by a dash. However, if there's a number followed by '@' and then a number, it typically means the number of welds at a certain pitch. In this case, '6 @ 100' means 6 weld segments with a 100mm pitch. The length of each segment is missing here, implying it's not explicitly given in this format, or the '6' itself is the length.
Why the other options are wrong
- A. The '6' is not the weld size; the weld size (8mm) is given separately.
- B. This interpretation would typically be '6-100' for length and pitch, or a clear length dimension.
- D. The '6' is not the length in this specific notation ('6 @ 100').
Intermittent Weld 'Number @ Pitch'
The notation 'Number @ Pitch' (e.g., 6 @ 100) for an intermittent weld specifies the total number of individual weld segments and their center-to-center spacing (pitch).
- Indicates quantity and spacing.
- Often used when length is standard or implied.
- Distinct from 'length-pitch' notation.
Memory trick: Segments and Spacing: 'Length-Pitch' or 'Number @ Pitch'.