In a fillet weld symbol, what does the leg length specify?

In a fillet weld symbol, what does the leg length specify?

• A. The notch angle of the weld.
• B. The overall weld length.
• C. The throat depth of the weld.
• D. The weld size (leg dimension) to be applied.

Answer: (D)

Leg length defines the size of a fillet weld. It measures the length of each leg of the triangular cross-section formed by the fillet, and that leg dimension is the weld size to be applied. This size largely governs the throat, which is the effective thickness that resists shear, and thus influences strength. Notch angle is a feature of groove welds and isn’t specified by fillet leg length. The overall weld length is a separate dimension along the joint, while throat depth is a distinct measurement derived from the leg length.

Leg length defines the size of a fillet weld. It measures the length of each leg of the triangular cross-section formed by the fillet, and that leg dimension is the weld size to be applied. This size largely governs the throat, which is the effective thickness that resists shear, and thus influences strength. Notch angle is a feature of groove welds and isn’t specified by fillet leg length. The overall weld length is a separate dimension along the joint, while throat depth is a distinct measurement derived from the leg length.