Weld Length Calculator — Formule
## Fillet Weld Length
**L = P / (t x Fv)**
Where P is the applied load, t is the effective throat (0.707 x leg size for a 45-degree fillet), and Fv is the allowable shear stress on the weld metal. For E70 electrodes, Fv = 0.30 x 70,000 = 21,000 psi.
**L = P / (t x Fv)**
Where P is the applied load, t is the effective throat (0.707 x leg size for a 45-degree fillet), and Fv is the allowable shear stress on the weld metal. For E70 electrodes, Fv = 0.30 x 70,000 = 21,000 psi.
Exemple Résolu
10,000 lb load, 1/4-inch fillet weld, E70 electrode.
- Throat = 0.25 x 0.707 = 0.177 in
- Capacity = 0.177 x 21,000 = 3,713 lbs/in
- Min length = 10,000 / 3,713 = 2.69 in
- Use at least 3 inches of weld.