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Text: Rails(II)

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The rails differ greatly in weight according to the kind of traffic, which they have to carry when placed in the track. The largest and heaviest rails are laid in the main line tracks for it is these tracks, which carry the largest volume of traffic.

The ties on most tracks were almost all of wood and in order to make them last longer they were treated with creosote.

The ties are not laid upon the earth for the earth cannot support the track structure. They rest upon a bed of crushed rock or gravel, which is called ballast. Ballast is a very important element of the track for it is the ballast, which supports the track structure hold, the track in position and provides needed drainage.