Why are Train Tracks Filled with Crushed Stones? Unknown Facts in Telugu
This is a good question with an interesting answer. The crushed stones are what is known as ballast. Their purpose is to hold the wooden cross ties in place, which in turn hold the rails in place.
Think about the engineering challenge faced by running miles of narrow ribbons of steel track on top of the ground: they are subject to heat expansion and contraction, ground movement and vibration, precipitation build-up from rough weather, and weed and plant growth from underneath.
Now keep in mind that while 99 per cent of the time they are just sitting there unburdened, the remaining 1 per cent they are subject to heavy moving loads.
Put all this together, and you have yourself a really, really interesting problem that was first solved nearly 200 years ago, and hasn't been significantly improved since!
Think about the engineering challenge faced by running miles of narrow ribbons of steel track on top of the ground: they are subject to heat expansion and contraction, ground movement and vibration, precipitation build-up from rough weather, and weed and plant growth from underneath.
Now keep in mind that while 99 per cent of the time they are just sitting there unburdened, the remaining 1 per cent they are subject to heavy moving loads.
Put all this together, and you have yourself a really, really interesting problem that was first solved nearly 200 years ago, and hasn't been significantly improved since!
