Number of Fish-Plates per km of Track Calculator

Fish Plates Formula:

\[ N_{fp} = 2 \times N \]

Number of Fish Plates per km:

1. What is a Fish-Plates per km Calculator?

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

Purpose: It helps railway construction and maintenance professionals determine how many fish plates are required for track projects.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ N_{fp} = 2 \times N \]

Where:

\( N_{fp} \) — Number of fish plates per km
\( N \) — Number of rails per km

Explanation: Each rail connection requires two fish plates (one on each side), so the total is simply double the number of rails.

3. Importance of Fish Plates Calculation

Details: Proper calculation ensures you have enough fish plates to join all rail sections, maintaining track continuity and safety.

4. Using the Calculator

Tips: Enter the number of rails per kilometer. The result includes a ±5% margin for variations in rail lengths and connections.

5. Frequently Asked Questions (FAQ)

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 multiply by 2?
A: Because each rail joint requires two fish plates - one for each side of the connection.

Q3: What's the typical number of rails per km?
A: This varies based on rail length, but standard 18m rails would require about 56 rails per km (1000m/18m ≈ 55.55).

Q4: Does the ±5% account for waste?
A: Yes, the percentage accounts for potential variations, damaged plates, and installation requirements.

Q5: How do I find the number of rails per km?
A: Divide 1000 meters by the length of each rail section in meters.