Create a grading infill for the transition.Select the option ‘Increment’ from the command line and type the desired distance between points (e.g. Select the feature line and use the ‘Insert Elevation Point’ tool from the contextual ribbon to add some intermediate points that will then be used for the surface triangulation.Make sure that you get the elevations of the feature line from the target surface. Draw a feature line for the top of the cut or the toe of the fill slope in the transition.You will need to complete the top or toe of the slope with a feature line and then model the transition as an infill. In that particular case, the process is more manual. However, this tool in Civil 3D will not help if you want the transition to take place on a corner.
If the transition occurs along a straight line, you can use the ‘Create Transition’ tool, as shown below: When you are modelling grading objects in Civil 3D, you may require using different slopes along the same feature line. While this is simple enough (just select ‘No’ when you get the ‘Apply to entire length?’ prompt in the command line), modelling the transition between those grading objects can require more care.
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