Shannon,
The only way I know of to do this is manually with circles and contours. If
you want a 2% slope, create a 50 circle at the starting point on your
highest contour and where it intersects with the contour below, is the path.
Next move (or copy) the circle down to that intersection and where it
intersects the next contour down, is the path. Continue until done. If you
need more accuracy, you could use a smaller contour interval.
Brian
"shannonpickett" wrote in message
news:14229097.1095980210533.JavaMail.jive@jiveforum2.autodesk.com...
> Good Afternoon.
>
> I have a surface and want to create a ditch at a defined and constant
slope around the side of a hill. If I select the starting point, can the
software create a polyline (or 3D polyline) that follows an existing surface
at a defined slope.
>
> Thanks for your help.
> Shannon L. Pickett, PE, LS