Thanks,
The offset tool will work for now.
It would be nice to draw a 3D pipe object on a 2D terrain view and then tell it to SendToSurface:-6" depth:10' max radius (for an irrigation line, for example) and then have VW drop to 6" underground. The same could be used for a flex drain pipe, except that we would need to choose a starting depth and then by sections, perhaps, define a slope.
Thanks again,
Mark