To Assign Feature Line Levels when Creating Feature Lines from Objects

When creating a feature line you can manually enter a level or assign a level from a surface or from grading objects when creating a feature line from objects.

Tutorial Exercise: Creating Feature Lines

To assign feature line levels from a surface

1. Click Home tabCreate Design panelFeature Line drop-downCreate Feature Lines From Objects Find.
2. In the Create Feature Lines dialog box, select the Assign Levels check box and click OK.
3. In the Assign Levels dialog box, select the From Surface option.
   Note: If there are no surfaces in the drawing, the From Surface option is unavailable.
4. Select a surface from the list or click the arrow icon to select it in the drawing.
5. Select the Insert Intermediate Gradient Break Points check box to insert intermediate gradient breaks where the element crosses surface Triangulation lines. Additional level points are created at these locations.

To manually assign feature line levels

1. Click Home tabCreate Design panelFeature Line drop-downCreate Feature Lines From Objects Find.
2. In the Create Feature Lines dialog box, select the Assign Levels check box and click OK.
3. In the Assign Levels dialog box, enter a level in the edit box select the Level option and press OK. If the object is a 3D polyline with varying levels, the first point is set to the specified level and the rest of the points are raised/lowered by the same relative amount so that the level differences between the points remain.

To assign feature line levels from a grading in the current site

1. Click Home tabCreate Design panelFeature Line drop-downCreate Feature Lines From Objects Find.
2. In the Create Feature Lines dialog box, select the Assign Levels check box.
3. Select the From Gradings option. This option is similar to the From Surfaces option but acquires the levels directly from any gradings that it overlaps in the site that the feature line is to be created in.
   Note: If there are no gradings in the drawing, the From Gradings option is unavailable.
4. Select the Insert Intermediate Gradient Break Points check box to insert intermediate gradient breaks where the element crosses surface Triangulation lines. Level points are created at these locations.