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Materials and Stripping

Updated November 15, 2017

This article applies to:
  • RoadEng Civil
  • RoadEng Forestry

So far, our design has ignored the quality of the material in the original ground. If you looked a little closer you would find that all subgrade cut and fill material is classified as OB (overburden). This is a common practice and produces acceptable results (provided that you assign a reasonable expansion factor to OB so that the Mass Haul is approximately correct).

In this exercise, we will add some more realism to our design by defining materials in the original ground and in the subgrade fill. We will also strip topsoil from the original ground before applying templates.