Corridor structure volume vs existing ground

[Anonymous]

Hello Everyone. I have a query regarding on extracting the volume from my corridor structures vs the existing ground. I manage to get the volume of the structures without the existing ground but i can't seem to figure out on how to get the structure volumes vs the existing ground. I have attached an image for reference. Thanks in advance.

 

[tcorey]

Create a Corridor Surface from the Datum. Compare Datum to OG.

[Anonymous]

Thanks @tcorey . I have done the datum part.

What i exactly want is the volume of each structure vs OG. Is there a way to directly compare the structure shape vs OG or only by surfaces? For example the pave on the image below. Thanks.

[tcorey · Accepted solution]

I think I understand what you're asking.

Make a surface at the bottom of each import material layer. Compare those surfaces to OG.