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CAD tip CAD tip # 6895:

Question CAD 
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Q - question

How to use spline as a breakline in Civil 3D?

A - answer You can easily convert a spline curve to a polyline of the same shape and use this polyline for your terrain model (DTM).

Use the SPLINEDIT command and its option "convert to Polyline". The PLINECONVERTMODE variable specifies whether your spline will be converted to arc (1) or line (0) segments.

You can do the same in older AutoCAD and Civil versions with the SplineConvert utility.

Civil2010
100% *  CAD 
31.8.2009    4752x  
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applies to: AutoCAD Civil 3D 2010 ·

See also:
Tip 10537:Conversion of Mesh to T-Spline fails in Fusion360.
Tip 10231:How to draw spiral in AutoCAD LT?
Tip 9512:How to convert a point cloud to an editable 3D CAD model (mesh)?
Tip 9357:Intersection of a 3D curve with a 3D surface in AutoCAD.
Tip 8962:Project 2D curve to a 3D sphere.


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