In this exercise, you will define breaklines from existing 3D polylines that represent existing roadway edge of pavement.
On the command line, enter LOA to turn all of the layers in the drawing back on.
On the View menu, click Named Views to display the View dialog box. Under Name, select 3, click Set Current, and then click OK.
Enter LAI, select one of the red existing roadway EOP 3D polylines, and then press ENTER to display the Layer(s) to isolate dialog box.
Verify that the EOP_3D layer is selected and click OK to isolate the existing roadway EOP layer.
On the View menu, click Named Views to display the View dialog box. Under Name, select 1, click Set Current, and then click OK.
On the Terrain Model Explorer select Breaklines, and then right-click and click Define by Polyline.
Enter Existing_Road_EOP for the Description, and then use a crossing box to select the existing roadway EOP 3D polylines. Make sure you select all of the polylines.
Press ENTER to display the Terrain Breaklines dialog box, click No to continue and process the breakline data.
The 3D polyline breakline data is displayed in the right pane of the Terrain Model Explorer.