DENDROLOGY

Detailed explanation-1: -Sleepers are wooden planks laid across railway tracks; they hold the tracks in position. Was this answer helpful?

Detailed explanation-2: -The wooden planks, called sleepers or ties, hold the two rails in place. Heat and trains move rails around and these planks keep the rails held together as they move.

Detailed explanation-3: -Wooden or concrete sleepers are kept below the railway line to increase the area of contact of the train. As a result, there is less pressure of the train on the ground preventing it from sinking.

Detailed explanation-4: -Railway tracks are laid on large sized wooden sleepers so, that the thrust due to the weight of train is spread over large area . This reduces the pressure on the ground. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.