02 · Closed book

Joints, welds, and language

The vocabulary the closed-book paper assumes: joint types, weld parts, CJP vs PJP, throat, HAZ, heat input.

Five joints, many welds

Butt, T, lap, corner, edge. Then the weld that actually joins them.

Anatomy of a weld

Face, toes, root, throat, HAZ — the words you will write on the practical report.