How do you differentiate a groove weld symbol from a fillet weld symbol on a drawing?

How do you differentiate a groove weld symbol from a fillet weld symbol on a drawing?

• A. A groove weld symbol indicates a groove in the joint and uses a groove weld symbol.
• B. A triangular symbol indicates a fillet weld.
• C. Symbols are identical for groove and fillet welds.
• D. There is no standard difference; refer to notes.

Answer: (C)

The key idea is reading welding symbols by their shapes. A fillet weld is identified on the drawing by a triangular symbol placed against the joint line. That simple triangle tells you immediately that the weld is a fillet, which is a triangular cross-section weld with a throat and leg dimensions read from the symbol and dimension notes. Groove welds, on the other hand, are shown with a groove-contour symbol along the joint line (such as V, bevel, U, or J shapes). They do not use the triangle shape; instead, the groove geometry itself is depicted, sometimes with depth or size references. Because of these distinct shapes, groove and fillet weld symbols are not identical. There is a standard difference in how these welds are depicted, and you should rely on the shape of the symbol and any accompanying notes to determine the weld type. The idea that a triangular mark would be used for a fillet weld is the clearest, most direct way to differentiate them.

The key idea is reading welding symbols by their shapes. A fillet weld is identified on the drawing by a triangular symbol placed against the joint line. That simple triangle tells you immediately that the weld is a fillet, which is a triangular cross-section weld with a throat and leg dimensions read from the symbol and dimension notes.

Groove welds, on the other hand, are shown with a groove-contour symbol along the joint line (such as V, bevel, U, or J shapes). They do not use the triangle shape; instead, the groove geometry itself is depicted, sometimes with depth or size references. Because of these distinct shapes, groove and fillet weld symbols are not identical.

There is a standard difference in how these welds are depicted, and you should rely on the shape of the symbol and any accompanying notes to determine the weld type. The idea that a triangular mark would be used for a fillet weld is the clearest, most direct way to differentiate them.