If a vee-groove joint has a 45-degree included angle, what is the bevel angle on each plate?

• A. 22.5 degrees
• B. 45 degrees
• C. 11.25 degrees
• D. 30 degrees

Answer: (A)

For a symmetric vee groove, the included angle is the sum of the bevel angles on both plates. If both sides are beveled equally, each bevel is half of the included angle. So a 45-degree included angle means each plate is beveled at 22.5 degrees. This gives a winding groove whose faces meet at 45 degrees when welded.