During groove weld inspection, which dimensions are normally measured?

• A. All of the above.
• B. The root opening.
• C. Weld reinforcement.
• D. Base material thickness.

Answer: (A)

The key idea is that weld geometry is checked by measuring multiple dimensions that define how the groove joint was made. In groove weld inspection, you look at: the root opening—the gap at the bottom of the groove; the weld reinforcement—the height of the deposited weld above the base surface; and the base material thickness—the thickness of the metal being joined. Each of these dimensions influences how the weld is supposed to perform and whether it complies with the design or code requirements. The root opening ensures the groove was prepared to the correct size, the reinforcement confirms the weld size falls within the specified limits, and the base thickness helps verify the joint’s overall geometry and supports accurate throat and fill assessments. Because all of these factors affect weld quality and conformance, they’re normally measured.