How do you smooth out contours in Civil 3D?

To smooth the contours, go into the style the surface is using and, on the contours tab, toggle the option to smooth the contours to True. Once you have this toggled on, you can select the type of smoothing you want to apply to the surface as well as how aggressive you want the contour smoothing to be.

How do I make contours smooth in Civil 3D?


  1. Smooth contour lines – rebuild your surface with smoothed data: Select a contour line style for your surface representing an adequate equidistance. Make sure that the contour line style has switched on “line smoothing.” …
  2. Use the Civil 3D function Smooth Surface. Select your surface > type SMOOTHSURFACE.

How do you clean up contours in Civil 3D?


  1. Draw a polyline boundary around the area to smooth.
  2. In Prospector, expand the desired surface name, and then expand the Definition.
  3. Right-click Edit. …
  4. Verify that Natural Neighbor Interpolation is selected as the Smoothing Methods option.

How do you add surface styles in Civil 3D?

The surface style is selected on the Information tab of the Surface Properties window. Click on the down arrow next to Surface style: and select a style from the drop-down menu. The Minnesota Civil 3D drawing template contains, by default, a terrain surface with the title Existing Ground.

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How do you simplify a surface in Civil 3D?

Select a surface. On the Surface tab, Modify panel, click Edit Surface drop-down Simplify Surface Find. If more than one surface is available in the drawing, click the surface that you want to simplify or press Enter to select a surface in the Select A Surface dialog box.

What does smooth contour mean?

outline, contour, profile, silhouette mean the line that bounds and gives form to something. outline applies to a line marking the outer limits or edges of a body or mass. traced the outline of his hand contour stresses the quality of an outline or a bounding surface as being smooth, jagged, curving, or sharply angled.

How do you smooth out contour lines in ArcGIS?

The appropriate method for generating smooth data-driven contour lines is by smoothing the input DEM using the focal statistics tool in ArcGIS. This output will be data-driven and will allow us to build contours at different levels of smoothness; leaving the control at the user’s hand.

How do you edit contours in Civil 3d?

To Edit Contours

  1. Select the contour graphically or by using an AutoCAD command, such as PEDIT or PROPERTIES.
  2. Perform the edit to the contour. …
  3. Rebuild the surface to update the contour definition by right-clicking the surface in the Prospector tree and clicking Rebuild.

How do you delete a surface point in Civil 3d?

In Toolspace, on the Prospector tab, expand the surface Definition collection, right-click , and click Delete Point. At the command line, you are prompted to select points. Click the points you want to delete from the surface. Press Enter.

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How do you smooth a surface?

To smooth a surface,

  1. Activate the Surfacing module. …
  2. Click Surfacing and then, in the Advanced Surfacing group, click Smooth Surface. …
  3. Click the surface you want to smooth. …
  4. Enter a surface approximation tolerance in the Tolerance data entry field. …
  5. Click Smooth to smooth the surface with the given tolerance.

How do you smooth out a polyline in AutoCAD?

How do you smooth in AutoCAD?

  1. Click Modify tab Edit Geometry panel Smooth .
  2. Select the feature line(s) to smooth or straighten.
  3. Do one of the following: Press Enter to smooth the lines. Enter Straighten to straighten lines that were previously smoothed.