Adding Breaklines To a Surface

Topics in this section

About Breaklines
Breaklines are critical to creating an accurate surface model because it is the interpolation of the data, not only the data itself, that determines the shape of the model.
About Creating Standard Breaklines
Use the Add Breaklines dialog box to create standard breaklines.
To Create Standard Breaklines
About Creating Proximity Breaklines
Use the Add Breaklines dialog box to define proximity breaklines that reference surface points in proximity to the vertices of the polyline that you select as the breakline.
To Create Proximity Breaklines
About Creating Wall Breaklines
Use the Add Breaklines dialog box to define features, such as retaining walls or curbs as breaklines.
To Create Wall Breaklines
About Creating Non-Destructive Breaklines
Use the Add Breaklines dialog box to create a non-destructive breakline from either a grading feature line or an open or closed AutoCAD object.
To Create Non-Destructive Breaklines
To Import Breaklines From a File
To Create Breakline Data in a Text File
To View Breakline Information
About Editing Breaklines
Edit any breakline that you have defined by selecting it in the drawing. You can insert, move, and delete vertices, as well as redefine the elevation at a selected vertex.
To Change a Breakline Vertex Elevation or Location
To Change the Description of a Breakline Operation
About Inserting Breakline Data Into a Drawing
Insert breaklines into a drawing as polylines.
To Insert Breakline Data Into a Drawing

Parent topic: Adding and Editing Surface Data