why their is gap between railtracks

of rail

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The gap between rail tracks, known as the rail joint, is intentional and serves a few important purposes:

1. Expansion and Contraction: Rail tracks are made of metal, usually steel, which expands and contracts with changes in temperature. The gap allows the tracks to expand during hot weather and contract during cold weather. Without this flexibility, the tracks could buckle or warp, causing safety hazards.

2. Maintenance Access: The rail joint provides an access point for maintenance activities. It allows for easy removal and replacement of damaged or worn-out sections of the track. It also allows for adjustments to be made to the track's alignment and levelness.

3. Noise and Vibration Control: The gap between rail tracks helps reduce noise and vibrations generated by passing trains. The joints break up the continuous contact between the wheels and the rails, preventing noise and vibrations from resonating along the entire track.

To install rail tracks, specialized equipment is used. A track-laying machine, also known as a track layer or track motor car, is employed. It lifts sections of rail and positions them accurately on the track bed. The machine also ensures that this gap between the tracks is maintained throughout the installation.

Regular maintenance is crucial for ensuring a safe and smooth railway network. Inspections are conducted to identify issues such as loose or damaged rail joints. Any necessary repairs or replacements are then carried out to maintain the integrity of the track structure.