Compute Earthwork Materials - Non Vertical

[Anonymous]

I am working on computing earthwork materials from surfaces off of a corridor I built. The problem I am having is when I compare the two surfaces in a section to calculate the volume it clips the comparison vertically. (See attached). I am looking for a comparison to the extent of the two surfaces or an alternative process. Is there any way this can be achieved? Thanks in advance.

[sirjoelsph · Accepted solution]

Surface Volumes will only compare where two different surfaces overlap.  In your example, you would need to add the same boundary from your upper surface to your lower surface so that there were the same area.  You should be able to do this by extracting the boundary from the upper surface, applying the elevations to it, and then adding it as a breakline to your lower surface.

[Anonymous]

Thank You. Thats what I needed to know.