Functions of Rails

Functions of Rails

Following are the functions of rails:

Functions of Rails

1. The rails provide the level and continuous surface for the movement of trains.

2. The rails provide a smooth pathway to trains. The pathway has very low friction. The friction between the wheels of train and steel of the rails is about 20% of the friction between the pneumatic tyres and metalled roads. 

3. The rails serve as a lateral guide for the running of wheels.

4. The rails carry the stresses developed due to vertical loads transmitted to it through axles and wheels of the rolling stocks, due to braking forces and thermal stresses etc.

5. The rail transmits the heavy load of rolling stock etc to the large area of formation through sleepers and ballast. 

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