I've been learning civil3d for some time now and I really want to understand how the program calculates volumes from road corridors.
When the top code is used to create surface from a road corridor, the created surface coincides with the top of the road pavement (binder/wearing course), which is not part of earthworks.
How can I create a surface at the formation level so as to compute actual earthworks?
I hope my question is comprehensible
You'll also want to create a "Datum" surface using bottom links, and apply a surface boundary to each surface in Corridor Properties.
This related thread may also be helpful in understanding "how the program calculates volumes from road corridors."
I'm not familiar with the term "Formation" but the "Datum" is the bottom most layer of your assembly.
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