Which measurement is found on the reference line for a surfacing weld?

Which measurement is found on the reference line for a surfacing weld?

• A. The length.
• B. The width.
• C. The height.
• D. The area of surface covered.

Answer: (C)

The reference line in a weld symbol is the baseline used to specify the size of the weld, and for a surfacing weld the important dimension is the height—the thickness of the material to be deposited above the base surface. This height tells you exactly how much buildup to apply to achieve the required surface thickness. The length of the weld, how far along the joint the deposit runs, is represented by another dimension on the symbol, not by the height on the reference line. Width and area aren’t the primary readouts on the reference line for this type of weld; width is about the spread of the bead and area would be a derived value from length and height. So, the measurement found on the reference line for a surfacing weld is the height.

The reference line in a weld symbol is the baseline used to specify the size of the weld, and for a surfacing weld the important dimension is the height—the thickness of the material to be deposited above the base surface. This height tells you exactly how much buildup to apply to achieve the required surface thickness. The length of the weld, how far along the joint the deposit runs, is represented by another dimension on the symbol, not by the height on the reference line. Width and area aren’t the primary readouts on the reference line for this type of weld; width is about the spread of the bead and area would be a derived value from length and height. So, the measurement found on the reference line for a surfacing weld is the height.