Question

why are the railway tracks laid on top of wooden or concrete beams​

Answer 1

Answer:

Concrete sleepers have a number of advantages compared to wooden ones:

Durability (they don’t rot or get eaten by termites, so last longer)

Stability (less prone to shifting or fractures and can cope with heaver axle loads)

Lower maintenance costs

Fire-resistant (they don’t burn like wooden sleepers)

There are some disadvantages to their use compared to timber ones, but these are outweighed by the advantages.