AutoCAD Civil 3D

[#1]

I have a profile view that shows two ditch profiles in it, for right and left ditch.  They are similar in elevation, so they overlap some in the profile view.  Is there a way to show one of them at a set interval below its actual datum, like say, 5'?  Short of drawing in a dummy profile or expolding it - which I'm going to do shortly....

[#2]

I've never heard of any way to show a profile at any elevation other than what it actually is.

What you might be able to do is create a profile view style that doesn't show anything, or at least puts things on a no-plot layer.  Then put one of the ditch profiles in that profile view and overlay it on top of the original one.  Adjust the elevation limits of the no-plot view to shift that profile up or down.

[#3]

I would recommend the same as Steve.