What is the term for the horizontal or vertical distance from the base material to the toe of a weld?

The term for the horizontal or vertical distance from the base material to the toe of a weld is referred to as the weld leg. This measurement is crucial for understanding the geometry and effectiveness of the weld. In many welding applications, particularly in fillet welds, the leg lengths help determine the strength and the ability of the weld to resist various forces.

In essence, the weld leg represents how far the weld extends from the joint it is meant to strengthen, which influences its performance in service. Accurate measurement of the weld leg is essential for ensuring that welding specifications and standards are met, providing confidence in the overall integrity of the welded joint.