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NR/L2/TRK/4239 ISSUE 3

Track Bed Investigation, Design and Installation

active, Most Current
Organization: NR
Publication Date: 2 December 2023
Status: active
Page Count: 57
scope:

This document applies to site investigation scoping, site investigations, design, specifying track renewals and the installation of the track bed.

This document applies to all ballasted track for renewals, enhancements and remodelling schemes.

It does not apply to highspeed lines above 125 mph.

Purpose

The document sets out a consistent technical approach to track bed diagnosis, investigation and design to reduce the risk of premature track bed failures and high frequency of maintenance interventions following track renewals work. This standard is a key control for the risk of loss of geometry (cyclic top/twist fault) beyond safety limits as illustrated in NR/GN/TRK/8001/0203.

Document History

NR/L2/TRK/4239 ISSUE 3
December 2, 2023
Track Bed Investigation, Design and Installation
This document applies to site investigation scoping, site investigations, design, specifying track renewals and the installation of the track bed. This document applies to all ballasted track for...
September 5, 2020
Track Bed Investigation, Design and Installation
This document applies to site investigation scoping, site investigations, design, specifying track renewals and the installation of the track bed. This document applies to all ballasted track for...
December 5, 2015
Track Bed Investigation, Design and Installation
This Business Process Document details the requirements and guidance for those engaged in site investigation scoping, site investigations, design, specifying track renewals and the installation of...

References

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