Question

Give me answer in about 50to100words
Why railway tracks are in I shape.?

Answer 1

The Bull headed rails resemble the 'I' shape more correctly. These are shaped so for following purposes: The top portion or the HEAD of the rail is thicker to take up the impact of the fast moving wheels, and carry the load of trains preventing abrasion of the tracks.

Answer 2

The top portion or the HEAD of the rail is thicker to take up the impact of the fast moving wheels, and carry the load of trains preventing abrasion of the tracks.

The WEB of the rail is to uplift the train from the ground level; and as the inner flanges of wheels are of greater area than the outer flanges as shown below, so the web mainly provides clear cover (distance) between wheel base and the sleeper/ ballast layer.The FLAT FOOT provides two-fold purpose. Easy clamping i.e fixing to the sleeper beneath it because of wider area as well as greater surface area due to flat foot helps in load transfer to the sleeper more efficiently which further transfers the load to ballast and later sub-base.