Railways

Railways

The means of conveyance of passengers and goods by way of wheeled vehicles running on rail tracks.

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Railways > Railroad

backfill

Railways; Railroad

Material placed adjacent to an abutment, pier, retaining wall or other structure or part of a structure to fill the unoccupied portion of the foundation excavation. Soil, usually ...

rail joint bar

Railways; Railroad

See Joint bar.

backwater

Railways; Railroad

The water of a stream retained at an elevation above its normal level through the controlling effect of a condition existing at a downstream location such as a flood, an ice jam ...

rail joint base plate

Railways; Railroad

A special tie plate used under some types of rail joints.

ballast

Railways; Railroad

Selected material placed on the roadbed to support it and to hold track in line and surface. Ballast preferably consists of sized hard particles easily handled in tamping, which ...