Rail Bed Piping in Verticals The High-Speed Rail is elevated by center divider 'T' that contain the pipelines, communication lines, sensors, etc., and these can each be prefabricated in lengths and placed before the 'skin' of the 'T' is installed. The skin is a weather resistant covering that is concave to help prevent unauthorized climbing and scaling.  All piping within the 'T' is subject to periodic inspections and maintenance schedules. Index of ...