Exercise 1: Editing the Surface Style

In this exercise, you will hide the display of the points on the surface and turn on the display of depression contours.

Depression contours form closed loops around areas of descending elevation. These are areas where lakes or ponds can form if the rainfall and soil conditions are right.

Edit the surface style

1. Open Surface-3.dwg, which is located in the tutorials drawings folder.
2. In Toolspace, on the Settings tab, expand the SurfaceSurface Styles collection.

   This collection contains the existing surface styles in the drawing.

3. The style (Standard) that is being referenced by a surface in the drawing is designated with an orange marker:
4. Right-click the Standard surface style. Click Edit.
5. In the Surface Style dialog box, click the Display tab.
6. In the Component Display table, turn off the visibility of Points in the surface. To do this, click in the Visible column. Click Apply.
7. Click the Contours tab.
8. Expand the Contour Depressions property group. Specify the following parameters:
   • Display Depression Contours: True
   • Tick Mark Length: 5
9. Click OK.
10. Depression contours are now visible in the drawing, with tick marks along their length.

To continue this tutorial, go to Exercise 2: Using a Different Style for a Surface.