Question

how expansion of metal in railway track help full to us

Answer 1

Mostly the modern railway tracks are using the hot-rolled steel with a profile of an asymmetrical rounded I-beam because the steel is very flexible and has the ability to expand. steel is usedbecause when it expands it does not change it shape, it only becomes bigger making sure it is safe to travel by train.

Answer 2

here is ur answer mate.....


So that there is enough margin for the tracks to expand and contract due to the temperature changes. If that gap is not left then the tracks might have enormous stress in them while expanding due to heat. ... Thermal expansion of long continuous sections of rail tracks is the driving force for rail buckling......

hope this helps u mate....

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