In welding drawings, what does a standard fillet weld symbol indicate?

• A. A groove weld
• B. A plug weld
• C. A fillet weld between two members, size determined by leg lengths
• D. A slot weld

Answer: (C)

A standard fillet weld symbol indicates a fillet weld joining two members, with the size set by the leg lengths of the fillet. The leg lengths specify how large the weld cross-section will be, which determines the weld’s strength along the joint. This symbol identifies a fillet weld specifically, not other types like groove, plug, or slot welds, which have different symbols. Groove welds show edges prepared for a groove, plug welds involve filling a drilled hole, and slot welds use a slot-shaped weld; those configurations are conveyed by their distinct symbols.