V-groove butt joint callout

A V-groove callout communicates the preparation needed for a butt joint. The included angle and root opening describe the groove before welding. A backing symbol records that support is used behind the root, and the contour and finish state how the completed face is treated. This example gives a fabricator the essential information for a prepared plate splice without relying on a separate written note. Before using the layout in a build or document, compare every label with the source requirements and update the drawing when parts, conditions, or materials change. The example is deliberately small so the essential relationships remain readable, easy to review with collaborators, and ready to extend with the details required for the actual project.