Home Back

Weight of Rails per km Calculator

Weight of Rails Formula:

\[ W = \frac{N \times L \times w}{1000} \]

m
kg/m
tonnes

1. What is Weight of Rails per km Calculator?

Definition: This calculator estimates the total weight of rails required per kilometer of railway track.

Purpose: It helps railway engineers and construction professionals determine the rail weight needed for railway projects.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = \frac{N \times L \times w}{1000} \]

Where:

  • \( W \) — Weight of rails per km (tonnes)
  • \( N \) — Number of rails per km
  • \( L \) — Length of single rail (meters)
  • \( w \) — Weight of rail per meter (kg/m)

Explanation: The formula multiplies the number of rails by their individual length and weight, then converts to tonnes by dividing by 1000.

3. Importance of Rail Weight Calculation

Details: Accurate rail weight estimation ensures proper track construction, structural integrity, and material procurement planning.

4. Using the Calculator

Tips: Enter the number of rails per km (default 154), length of single rail (default 13m for broad gauge), and weight per meter (default 52kg/m). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the standard rail length in India?
A: Indian Railways uses 13m for broad gauge and 12m for MG/NG tracks.

Q2: Why is there a ±5% variation?
A: This accounts for manufacturing tolerances and slight variations in rail specifications.

Q3: What are common rail weights?
A: Common weights are 52kg/m, 60kg/m, and 75kg/m depending on track requirements.

Q4: How many rails per km are typical?
A: Typically 154 rails per km for standard gauge tracks.

Q5: Does this include fasteners and sleepers?
A: No, this calculates rail weight only. Additional components must be calculated separately.

Weight of Rails per km Calculator© - All Rights Reserved 2025