Following the advantages and disadvantages of gravel ballast are described below

Advantages of Gravel as Ballast

1. It is less costly than broken stone ballast.
2. Its drainage property is excellent.
3. It does not injure wooden sleeper during packing.
4. It maintains good packing in pot and C.S.T – 9 sleepers.

Disadvantages of Gravel as Ballast

1. Packing gets easily disturbed in flat sleepers.
2. The greater cushion is necessary.
3. Requires ballast wall to prevent spreading.
4. It requires screening and washing before use

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