Assigning elevations to feature line

When creating a feature line, you can assign elevations from a surface or from grading objects. Using the From Gradings option in the Create Feature Lines dialog box creates a temporary surface from the selected gradings to compute the elevations for the feature line. This produces the same result as selecting the grading group surface, and is useful if you have not created a grading group surface.
To assign elevations from a surface to a feature line

1. Click Grading menu > Create Feature Lines from Objects.
2. In the Create Feature Lines dialog box, select the Assign Elevations check box.
3. Select the From Surface option.
   Note: If there are no surfaces in the drawing, the From Surface option will be unavailable.
4. Select a surface from the list or click the arrow icon to select a surface directly in the drawing.
5. Select the Insert Intermediate Grade Break Points check box to insert intermediate grade breaks where the entity crosses surface TIN lines. Elevation points will be created at these locations.

To assign elevations from gradings in the current site to a feature line

1. Click Grading menu > Create Feature Lines from Objects.
2. In the Create Feature Lines dialog box, select the Assign Elevations check box.
3. Select the From Gradings option.
   Note: If there are no gradings in the current site, the From Gradings option will be unavailable.
4. Select the Insert Intermediate Grade Break Points check box to insert intermediate grade breaks where the entity crosses surface TIN lines. Elevation points will be created at these locations.

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