I assume you have already managed to create the topography?
If not you can create a topography directly from a 3D survey DWG file or you can draw the points in yourself at the correct elevation.
Your contours will never exactly match those of the survey drawing purely because on any surface there are numerous ways the contours can be drawn which still technically show the same surface. In your Settings-->Site Settings is how you display what intervals your contours are displayed.
From the Help Menu:
Contour Line Display - Displays contour lines. If you clear the check box, custom contour lines still display in the drawing area.
At Intervals Of - Sets the interval between contour lines.
Passing Through Elevation - Contour intervals are based on this value. For example, if you set the contour interval at 10, contour lines display at -20, -10, 0, 10, 20. If the Passing Through Elevation value is set to 5, lines display at -25, -15, -5, 5, 15, 25.
Start - Sets the elevation where additional contour lines begin.
Stop - Sets the elevation where additional contour lines no longer display.
Increment - Sets the interval for additional contour lines.
Range Type - Select Single Value to insert one additional contour line. Select Multiple Values to insert additional incremental contour lines.
Subcategory - Sets the type of contour lines to display. Select a value from the list. You can define custom contour line types using the Object Styles command, in the Topography category.
Section cut material - Sets the material that displays in a section view.
Elevation of Poche Base - Controls the depth of the cross-section of earth (for example, –30 feet or –25 meters). This value controls the poche depth for all topography elements in your project.
Angle Display - Specifies the display of angular values on property line tags. You can load property line tags from the Civil folder under the Annotations family folder.
Units - Specifies the units to use when displaying bearing values in the Property Lines table.
Edited on: Wed, Jul 11, 2007 at 5:56:17 PM
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