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Types of Gradient In Railway Engineering

Posted on 6th January 201922nd February 2022 By Malay Sautya

Contents

  • 1 Types of Gradient In Railway
    • 1.1 A. Ruling Gradient
    • 1.2 B. Momentum Gradient
    • 1.3 C. Pusher gradient
    • 1.4 D. Station Yard Gradient

Types of Gradient In Railway

The various gradient used on railway tracks can be classified under the following heads:

Types of Gradient In Railway

a. Ruling Gradient
b. Momentum
Gradient
c. Pusher or Helper Gradient
d. Station yard Gradient.

A. Ruling Gradient

The permissible gradient usually provided in a railway track is called the ruling gradient. Itis the maximum gradient allowed on the particular track section. Ruling gradient mainly depends upon the power of the locomotive.
Generally, with one locomotive train, the following ruling gradients are adopted in India.

a. In plain terrain- 1 in 150 to 1 in 200
b. In hilly regions – 1 in 100 to 1 in 150

Read Also: Types of Railway Sleepers

B. Momentum Gradient

The rising gradient which is followed by a falling gradient and along which trains climb more easily due to momentum acquired by them over the falling gradient is called momentum gradient. Thus a momentum gradient can be steeper than the ruling gradient.

C. Pusher gradient

The rising gradient which is steeper than the ruling gradient and along which trains require additional locomotives to climb up the track is called the pusher gradient. These types of gradients are very important in mountainous terrain where steeper gradients are necessary to reduce the length of the track.

D. Station Yard Gradient

The minimum gradient provided on station yard for easy drainage is called station yard gradient or minimum gradient.

In Indian Railways, the maximum gradient permitted in station yards is taken as 1 in 400 while the minimum gradient recommended for station yards is 1 in 1000.

Read More:

Types of Rails

Railway Gauge

Classification of Gradient – Highway

Railway Engineering

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