The most common sizes of steel rails used in railway tracks are typically 115-pound, 132-pound, and 155-pound per yard.
The common sizes of steel rails used in railway tracks are typically 115 pounds per yard (57 kg/m) and 132 pounds per yard (66 kg/m).
The common sizes of steel rails used in railway tracks are typically 115 pounds per yard (57.1 kilograms per meter) and 136 pounds per yard (67.3 kilograms per meter).
