Overlap is a weld profile condition where the angle formed at the junction between the weld and base material is

• A. Less Than 90 Degrees From The Plate Surface.
• B. Equal To 90 Degrees From The Plate Surface.
• C. Greater Than 90 Degrees From The Plate Surface.
• D. An Internal Flaw Only Detectable With Ultrasonic Testing.

Answer: (A)

Overlap in a weld profile is seen when excess weld metal beads up onto the base material, so the weld-to-base junction forms a relatively shallow angle with the plate surface. That angle is less than a right angle—less than 90 degrees—relative to the plate. If the angle were exactly 90 degrees, the weld would meet the base cleanly without overhanging, and if it were greater than 90 degrees, you’d have a very different geometry that isn’t characteristic of overlap. Overlap is usually a surface condition visible on the weld, not something that’s only detectable by ultrasonic testing. So the described angle fits an acute, less-than-90-degree relationship to the plate surface.