Hod Carrier
Infrastructure 15
Very simply, this is a drain. At some locations the ground or environmental conditions means that the ballast and formation of the track is insufficient to provide adequate drainage. In this instance additional drains are provided, either at the sides or between the tracks. I won't insult anyone's intelligence by showing the design in isolation, as I'm sure it should be clear.
Infrastructure 15
Very simply, this is a drain. At some locations the ground or environmental conditions means that the ballast and formation of the track is insufficient to provide adequate drainage. In this instance additional drains are provided, either at the sides or between the tracks. I won't insult anyone's intelligence by showing the design in isolation, as I'm sure it should be clear.