This Standard is part of the RISSB Australian Rail Infrastructure Standards suite of Standards and covers the following aspects of the Infrastructure: This standard describes the requirements for the design, construction and maintenance of the railway formation and associated earthworks in connection with train operations in Australia. This Standard specifies the formation and related earthworks required for the trackworks within the rail corridor and includes: - cuttings and excavations - embankments - structural treatments/ground improvement - sub-ballast layer.