Polyline elevation
The polyline tool Elevation is used to set the elevation of the vertices of a polyline to specific values, using different methods.
Click Design 3D.
Click Elevation.

The function opens a new panel on the right where it is possible to select the elevation mode.
Mode: the mode on how polyline vertices are updated. There are different modes:
Fixed elevation: sets the elevation of all vertices of selected polylines to a fixed value.

Start elevation: sets the elevation of all polylines vertices. Click
to pick the elevation from CAD.
Start & End elevation: sets the elevation of all vertices of selected polylines defining the starting and ending elevation of the polylines.

Start elevation: the starting elevation of the polyline. Click
to pick the elevation from CAD.End elevation: the ending elevation of the polyline. Click
to pick the elevation from CAD.
Start elevation & slope: sets the elevation of all vertices of selected polylines defining the elevation of the starting vertex and the polyline slope.

Start elevation: the starting elevation of the polyline. Click
to pick the elevation from CAD.Slope: the slope of the polyline. Click
to pick the slope from CAD, selecting two points.
End elevation & slope: sets the elevation of all vertices of selected polylines defining the elevation of the starting vertex and the polyline slope.

End elevation: the ending elevation of the polyline. Click
to pick the elevation from CAD.Slope: the slope of the polyline. Click
to pick the slope from CAD, selecting two points.
Select in CAD the polylines to update the vertices elevations.