1. What is Leg of Weld?

The Leg of Weld is the distance from the joint root to the toe of the weld. It is a critical parameter in weld design that determines the strength and load-bearing capacity of the weld joint.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( h_l \) — Leg of Weld (m)
• \( P_a \) — Load per unit length in transverse fillet weld (N/m)
• \( \tau_{max} \) — Maximum shear stress in transverse fillet weld (Pa)

Explanation: This formula calculates the required leg size of a weld based on the applied load per unit length and the maximum allowable shear stress in the weld material.

3. Importance of Leg of Weld Calculation

Details: Proper weld leg size calculation is essential for ensuring structural integrity, preventing weld failure, and optimizing material usage in welded connections.

4. Using the Calculator

Tips: Enter load per unit length in N/m and maximum shear stress in Pa. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the 1.21 factor?
A: The 1.21 factor accounts for the geometry and stress distribution in transverse fillet welds, ensuring accurate calculation of the required leg size.

Q2: How does leg size affect weld strength?
A: Larger leg sizes generally provide greater strength and load-bearing capacity, but also require more material and welding time.

Q3: What are typical values for maximum shear stress?
A: Maximum shear stress values vary depending on the weld material, but typically range from 60-80% of the material's tensile strength.

Q4: When is this formula most applicable?
A: This formula is specifically designed for double transverse fillet welds subjected to shear loading.

Q5: Are there limitations to this calculation?
A: This calculation assumes uniform stress distribution and may need adjustment for complex loading conditions or non-standard weld geometries.