Which two elements of a welding symbol must always appear?

Which two elements of a welding symbol must always appear?

• A. Reference line and arrow line
• B. Weld symbol and tail
• C. Arrow line and tail
• D. Reference line and tail

Answer: (A)

Arrows and anchors drive a welding symbol. The arrow line points to the exact location on the drawing where a weld is required, so the welder knows where to apply it. The reference line is the baseline on which the weld symbol itself sits and where any additional details or notes are attached. Without the arrow, the location is unknown; without the reference line, there’s no place to convey what kind of weld is needed or to add related information. The tail and the specific weld symbol details are added as needed, but they don’t have to appear in every callout.

Arrows and anchors drive a welding symbol. The arrow line points to the exact location on the drawing where a weld is required, so the welder knows where to apply it. The reference line is the baseline on which the weld symbol itself sits and where any additional details or notes are attached. Without the arrow, the location is unknown; without the reference line, there’s no place to convey what kind of weld is needed or to add related information. The tail and the specific weld symbol details are added as needed, but they don’t have to appear in every callout.