Load Carried by Single Fillet Lap Weld Calculator

Weld Load Formula:

\[ W = 0.707 \times \sigma_t \times L_{single} \times t_{plate} \]

Tensile Stress:

Length of Single Fillet Lap Weld:

Thickness of Plate:

Tolerance:

Load on Weld (N):

Minimum Load (5% tolerance):

Maximum Load (5% tolerance):

1. What is Load Carried by Single Fillet Lap Weld?

Definition: This calculator determines the load capacity of a single fillet lap weld based on material properties and dimensions.

Purpose: It helps engineers and welders calculate the safe load capacity of welded joints in structural applications.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = 0.707 \times \sigma_t \times L_{single} \times t_{plate} \]

Where:

\( W \) — Load on weld (Newtons)
\( \sigma_t \) — Tensile stress (Pascals)
\( L_{single} \) — Length of single fillet lap weld (meters)
\( t_{plate} \) — Thickness of plate (meters)

Explanation: The formula accounts for the effective throat area of the fillet weld and the material's tensile strength.

3. Importance of Weld Load Calculation

Details: Proper weld load estimation ensures structural integrity, safety, and compliance with engineering standards.

4. Using the Calculator

Tips: Enter the tensile stress, weld length, plate thickness, and tolerance percentage (default 5%). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the 0.707 factor in the formula?
A: This accounts for the effective throat area of a 45° fillet weld (cos45° = 0.707).

Q2: How does tolerance affect the calculation?
A: The tolerance provides a ± range around the calculated load to account for material variations and safety factors.

Q3: What units should I use?
A: Use consistent SI units - Pascals for stress, meters for length and thickness.

Q4: Does this include safety factors?
A: No, the calculated load is theoretical. Apply appropriate safety factors based on your application.

Q5: Can this be used for other weld types?
A: This formula is specific to single fillet lap welds. Other weld types require different calculations.