Number of Rails using Fish Plates Calculator

Formula Used:

\[ NR_{fp} = \frac{N_{fp}}{2} \]

Number of Rails using Fish Plates:

Definition: This calculator determines the number of rails needed based on the number of fish plates per kilometer of track.

Purpose: It helps railway construction and maintenance professionals estimate rail requirements for track projects.

The calculator uses the formula:

\[ NR_{fp} = \frac{N_{fp}}{2} \]

Where:

Explanation: Since each fish plate connects two rails, the total number of rails is half the number of fish plates.

Details: Accurate rail estimation ensures proper track construction, maintenance planning, and material procurement.

Tips: Enter the number of fish plates per kilometer of track (±5% tolerance). The value must be > 0.

Q1: What is a fish plate?
A: A fish plate is a metal bar bolted to the ends of two rails to join them together in a track.

Q2: Why divide by 2?
A: Each fish plate connects two rails, so the number of rails is half the number of fish plates.

Q3: What does ±5% mean?
A: This accounts for typical variations in fish plate spacing and installation tolerances.

Q4: How do I count fish plates?
A: Count all fish plates along 1 kilometer of track, including both sides of each joint.

Q5: Does this include spare rails?
A: No, consider adding 2-5% extra rails for maintenance and replacements.