How is the fillet weld throat defined?

How is the fillet weld throat defined?

• A. The depth of the root
• B. The width of the weld
• C. The shortest distance between the weld toes across the throat perpendicular to the weld face
• D. The weld length along the joint

Answer: (C)

In a fillet weld, the key dimension that governs strength is the throat—the minimum cross‑section thickness of the weld. It is defined as the shortest distance between the two weld toes, measured perpendicular to the weld face. This throat thickness determines how much material actually carries the load, so weld size is specified by this dimension rather than by the length along the joint or by any measure of the root depth. The weld length describes how long the weld runs along the joint, not how thick the welded cross-section is. The statement that matches this concept is that the throat is the shortest distance between the weld toes across the throat perpendicular to the weld face.

In a fillet weld, the key dimension that governs strength is the throat—the minimum cross‑section thickness of the weld. It is defined as the shortest distance between the two weld toes, measured perpendicular to the weld face. This throat thickness determines how much material actually carries the load, so weld size is specified by this dimension rather than by the length along the joint or by any measure of the root depth. The weld length describes how long the weld runs along the joint, not how thick the welded cross-section is. The statement that matches this concept is that the throat is the shortest distance between the weld toes across the throat perpendicular to the weld face.