Autodesk Civil 3D 2027 Help | Setting Up Default Rail Parameters

Update the design criteria file that ships with AutoCAD Civil 3D, or create a new file that contains your local standards tables.

Update the abbreviations in the drawing settings to use the critical point text that is required by your local agency.

Review the alignment feature settings for Cant Options and Rail Alignment Options, including default track width.

Use the Degree of Curvature Ambient Settings to specify the value from which degree of curvature is calculated.



Customize the design criteria file		Update the design criteria file that ships with AutoCAD Civil 3D, or create a new file that contains your local standards tables.



Verify the default label abbreviations		Update the abbreviations in the drawing settings to use the critical point text that is required by your local agency.



Verify alignment feature settings		Review the alignment feature settings for Cant Options and Rail Alignment Options, including default track width.



Specify the unit chord length or unit arc length		Use the Degree of Curvature Ambient Settings to specify the value from which degree of curvature is calculated.

Setting Up Default Rail Parameters