I've always found it strange that when designing road or rail corridors in fill conditions the earthworks between the proposed corridor and the existing ground are essentially left to the designers imagination.
Sure your daylight sub assemblies will show you external geometry and a volume surface can give you bulk qualities but the truth is the earthwork below the road or rail bed is as much of a complex civil engineering element as the road or rail assembly itself.
It would be great to see tools to allow earthworks to be designed as a solid part of the corridor design and to include elements like earthwork drainage and stabilisation.
'Earthworks' are common design element across virtually all infrastructure sectors that I've worked in but the existing daylight and grading tools just don't do them justice.
