Which option is not a valid plate groove designation?

Which option is not a valid plate groove designation?

• A. Curved-groove
• B. Flat-groove
• C. Horizontal groove
• D. Vertical groove

Answer: (A)

The thing being tested is how groove shapes for weld joints are named. In welding, groove designations describe the cross‑section shape of the edge prepared for the weld, and the shapes used are straight-edged and well-defined (such as square, bevel, V, U, J, and combinations). A curved profile would not fit into this standard naming system because it would be hard to describe consistently on drawings and would complicate fit-up and weld root control. That’s why curved-groove isn’t a valid plate groove designation. The other terms align with practical terminology you might encounter in drawings or specifications, describing a straight-edged or oriented groove rather than an unusual curved shape.

The thing being tested is how groove shapes for weld joints are named. In welding, groove designations describe the cross‑section shape of the edge prepared for the weld, and the shapes used are straight-edged and well-defined (such as square, bevel, V, U, J, and combinations). A curved profile would not fit into this standard naming system because it would be hard to describe consistently on drawings and would complicate fit-up and weld root control. That’s why curved-groove isn’t a valid plate groove designation. The other terms align with practical terminology you might encounter in drawings or specifications, describing a straight-edged or oriented groove rather than an unusual curved shape.