6. Classification and sizing of platforms
The design of subgrades is based, on the one hand, on the assessment of numerous parameters (intrinsic and/or mechanical characteristics of materials, frost susceptibility, etc.) and, on the other hand, calls on complementary disciplines, in particular those concerning traffic studies and pavement design proper, which are not developed here.
This paragraph only outlines the different classes of platform in natural and treated materials.
6.1 PST and earthworks
PST is differentiated into 7 cases, in cut or fill, listed in table 8 taken from fascicule 1 of the GTR. PST cases are defined in qualitative terms and related to groups of material classes and hydric...
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Classification and sizing of platforms
Backfill and subgrade compaction
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