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2. Constitution of the track
An essential component of the infrastructure, the track comprises four fundamental elements:
the roadbed, the interface between the track itself and the ground;
rails and sleepers ;
ballast.
2.1 Platform
The subgrade is the developed land on which the track rests, meeting two main criteria :
the geotechnical nature of the soil: granularity, hardness, weatherability and organic content ;
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Constitution of the track
Track layout
Bibliography
Standards and norms
- Line classification – Resulting wagon load limits - UIC 700 - 11-2004
- Caractéristiques de tracé des voies parcourues par des trains de voyageurs rapides - UIC 703 - 01-1989
- Railway applications – Track – Special rails – Grooved rails and associated structural shapes - NF EN 14811/IN1 - 01-2010
- Railway applications – Track – Turnouts – Part 1: Definitions - NF EN 13232-1 - 03-2004
- Railway...
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