Welded joints in cranes must withstand dynamic loads and fatigue. This calculator sizes fillet welds
based on the applied load, load angle, and electrode strength, ensuring compliance with AWS D1.1 and
FEM 1.001.
Inputs Explained
- Applied Load (P): The force the joint must transmit.
- Load Angle (θ): The angle between the weld axis and the force.
- 0° (Parallel): Shear load (weakest direction).
- 90° (Transverse): Tension/Compression (strongest direction).
- Weld Length (L): The effective length of the weld.
- Electrode Classification: The tensile strength of the weld metal (e.g., E70xx =
70 ksi ≈ 490 MPa).
- Duty Class: Determines the safety factor (γ) to account for fatigue and
reliability.
Outputs Explained
- Required Leg Size (w): The physical dimension of the weld leg needed to carry
the load.
- Joint Capacity: The maximum factored load the specified weld can safely carry.
- AWS D1.1 Limits: Checks if the calculated size meets minimum thickness
requirements to prevent rapid cooling cracks.