A fit-up inspection verifies which items before welding?

• A. Joint alignment, gap, root opening, and tack welds before welding.
• B. Welding current and voltage settings.
• C. Root opening verification only.
• D. Final weld cosmetic finish.

Answer: (A)

Fit-up verification before welding focuses on how the joint is assembled. It checks that the parts are properly aligned, the gap between pieces matches the design, the root opening is within spec, and that tack welds are in place to hold everything steady for welding. These elements ensure the weld can produce the correct penetration and throat without distortion once welding begins. Welding current and voltage are welding parameters set during the welding pass, not part of the pre-weld fit-up. Verifying only the root opening misses other critical alignment and restraint needs, and cosmetic finish is a post-weld concern, after the weld has been made.