scope:

This Specification applies to Longitudinal Timbers forming part of tracks on Railtrack infrastructure. The rails, baseplates and chairs may be directly supported by the Longitudinal Timbers or carried on cross sleepers on Longitudinal Timbers.

Longitudinal Timbers shall be considered to be part of the track system.

PURPOSE

This document:

• specifies the minimum requirements for the design, supply, installation, inspection and maintenance of Longitudinal Timbers Systems on Railtrack infrastructure;

• defines procedures to be used for the management of the interface between Longitudinal Timbers systems with supporting structures and the rails, baseplates, chairs and where applicable, sleepers.

Use of this Specification will ensure compliance with the requirements of Railway Group Standard GC/RT5021: Track System Requirements in respect of Longitudinal Timbers.

This document does not provide the specification for the design, inspection or maintenance of supporting structures.