In welding symbols, what does a fillet weld symbol indicate on a drawing?

In welding symbols, what does a fillet weld symbol indicate on a drawing?

• A. A fillet weld is optional; size is not shown.
• B. A groove weld is required; size is shown.
• C. No weld is needed.
• D. A fillet weld is required; the size is shown on the symbol.

Answer: (D)

Welding symbols tell you what weld to apply and how big it should be. When you see a fillet weld symbol on a drawing, it means a fillet weld is required at that location, and the size shown with the symbol is the fillet’s leg length (the dimension you read on the symbol). That leg length sets the weld’s approximate strength, with the throat being related but not the value shown. This is distinct from groove welds, which use a different symbol, and it’s not optional—the symbol communicates a required weld and its size.

Welding symbols tell you what weld to apply and how big it should be. When you see a fillet weld symbol on a drawing, it means a fillet weld is required at that location, and the size shown with the symbol is the fillet’s leg length (the dimension you read on the symbol). That leg length sets the weld’s approximate strength, with the throat being related but not the value shown. This is distinct from groove welds, which use a different symbol, and it’s not optional—the symbol communicates a required weld and its size.