Adjust Elevations to a Single Slope
This option adjusts the elevations of a line feature to conform to a specified slope degree. This tool requires terrain data to be loaded.
Select the line feature(s) of interest with the Digitizer tool then right-click to Move/Reshape Feature(s)> Adjust Elevations to a Single Slope.
In the Adjust Elevations to a Single Slope dialog specify the line slope in degrees (+- 60 degrees).
The first vertex of the line will be set at the terrain height (or keep its current value if per-vertex elevations are already set for the line feature). The additional line vertices will have the Z value adjusted to conform to the specified slope.