NR TWI 3P074
How to Maintain Longitudinal Timbers
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| Organization: | NR |
| Publication Date: | 1 March 2005 |
| Status: | active |
| Page Count: | 4 |
scope:
Introduction
This Track Work Instruction covers how to maintain longitudinal timbers.
The timbers are commonly referred to as waybeams or wheel timbers.
There are many types of longitudinal timbered bridges on the network and, as a result, many types of fixing systems.
This TWI outlines some of the more common types of systems and shows what you need to do to prevent deterioration.
See also the separate instruction:
TWI 2P021 How to recognise longitudinal timber deterioration
Document History
NR TWI 3P074
March 1, 2005
How to Maintain Longitudinal Timbers
Introduction
This Track Work Instruction covers how to maintain longitudinal timbers.
The timbers are commonly referred to as waybeams or wheel timbers.
There are many types of longitudinal...