What is known as ballast is the crushed stone that you see along the tracks of the rail, Their purpose is to maintain wooden cross ties which in turn hold the tracks. ...

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The crushed stones you see alongside railroad tracks 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. ... The answer is to start with the bare ground, and then build up a foundation to raise the track high enough so it won't get flooded.

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The crushed stones you see alongside railroad tracks 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. ... The answer is to start with the bare ground, and then build up a foundation to raise the track high enough so it won't get flooded.

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The main purpose is to hold the wooden cross ties in place which in turns hold the rails in place and build up a foundation to raise the track high enough so it won't get flooded.

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The crushed stones you see alongside railroad tracks 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. ... The answer is to start with the bare ground, and then build up a foundation to raise the track high enough so it won't get flooded

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