Surfaces on different sites

[tim_newsome]

Current project is an apartment complex. Standard Existing and Proposed surface models.

Now I am going to do some earthwork volumes. I am going to copy the proposed surface then lower the then lower the building pad & EOP feature lines and call it Proposed - Subgrade.

Would you put that surface on a different Site?

[rmk]

I don't think the surfaces would be a problem staying in the same site, but the feature lines will interact with other feature lines in the same site. So if you have other feature lines that cross each other they will cause a problem.
So maybe putting them in a separate site might be the way to go. Hopefully some others will have some ideas.