Click Output tab Export panel Export Civil 3D Drawing Find.
In the Export Autodesk Civil 3D Drawing dialog box, select AutoCAD DWG in the Export To File Type field.
Click the Export Settings button.
In the Export Settings dialog box, specify the drawing version for the exported files and whether to convert feature lines, parcel segments, and survey figures to 2D or 3D polylines, and then click OK.
Use the other options in the Export Autodesk Civil 3D Drawing dialog box to specify additional settings for exporting the drawings and to specify which drawings to export.
Click Export.
The Export Status dialog box is displayed.

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