Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual page 428

To work with crossing feature lines
NOTE This exercise uses Grading-7.dwg with the modifications you made in the
previous exercise, or you can open Grading-8.dwg from the
(page 819).
1 In the right viewport, select feature line ABC. Right-click. Click Elevation
Editor.
The Grading Elevation Editor displays a list of the points of intersection
(
vertical geometry points) along the feature line.
Notice that the
that the building pad feature line also has a PI at this point. When two
feature lines cross at a common vertex, both vertices must share the same
elevation value. The elevation for both feature lines at this point is
determined by whichever feature line was most recently edited. In the
following illustration, the common vertex is in Circle A.
2 In the Grading Elevation Editor click
Flatten Grade Or Elevations.
3 In the Flatten dialog box, select Constant Grade. Click OK.
Notice that in the Grading Elevation Editor, the Grade Ahead and Grade
Back values are updated to a consistent value. When you flatten a feature
line, the points between the start elevation and the end elevation are set
416 | Chapter 11 Grading Tutorials
PIs, or horizontal geometry points) and elevation change points (
icon is displayed in the first row. This icon indicates
tutorial drawings folder
Unselect All Rows. Click