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1. Introducing GTR
GTR comprises two issues
Leaflet 1 "General Principles", very useful for understanding the overall methodology;
Fascicule 2 "Technical appendices", the operational part of the document, containing tables of the technical elements required for project design and implementation.
The guide focuses on three aspects:
the establishment of a specific classification of materials to meet a pressing need in earthwork construction;
how the materials are to be used, depending on whether they are to be used for backfill or subgrade;
practical compaction procedures.
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Introducing GTR
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Bibliography
References
Calculation software
ALIZÉ – LCPC: software overview http//www.lcpc.fr/fr/produits/alize/doc/alize.pdf
Standardization
- Earthworks – Classification of materials for use in the construction of road infrastructure embankments and subgrades Classification number : P11-300 - NF P11-300 - 09-92
- Earthworks – Terminology Classification number : P11-301 - NF P11-301 - 12-94
- Soils: reconnaissance and testing – Platform load-bearing capacity – Part 1: Modulus under static plate loading (EV2) - NF P94-117-1 - 04-00
- Soils: reconnaissance...
Platform bearing capacity tests
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Module under static loading EV2
The test is defined by standard NF P94-117-1 published in April 2000 (see § Standardization in this "To find out more" section).
It involves two static loadings on a rigid 60 mm diameter plate. The EV2 modulus is determined using Boussinesq's formula:
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