In groove welds, what two dimensions describe the groove preparation?

In groove welds, what two dimensions describe the groove preparation?

• A. Weld length and width
• B. Bevel angle and root opening
• C. Fillet thickness and depth
• D. Groove bevel angle and root opening

Answer: (D)

Groove weld preparation is determined by two geometric features of the joint: the groove bevel angle and the root opening. The groove bevel angle describes how much each edge is beveled, shaping the groove and dictating how much filler metal and penetration are required to achieve a sound weld. The root opening is the gap at the root between the pieces, which affects how easily the weld pool can reach the root and whether full fusion can be obtained in the joint. Together, these two measurements define the groove geometry before welding starts. The other options describe the final weld dimensions or apply to fillet welds, not the groove preparation.

Groove weld preparation is determined by two geometric features of the joint: the groove bevel angle and the root opening. The groove bevel angle describes how much each edge is beveled, shaping the groove and dictating how much filler metal and penetration are required to achieve a sound weld. The root opening is the gap at the root between the pieces, which affects how easily the weld pool can reach the root and whether full fusion can be obtained in the joint. Together, these two measurements define the groove geometry before welding starts. The other options describe the final weld dimensions or apply to fillet welds, not the groove preparation.