Define a Split Line

You can add a hole to an automatically generated floor, or define a different floor structure or surface material for a certain area by defining a split line for the floor. The split line can be an open or closed polyline.

  1. Add a line chain in one of the following ways, for example:
    • Select Drafting | Lines | Line
    • Select Drafting | Lines | Closed Polyline
  2. Select the automatic floor.
  3. Select Automatic Floors | Define Split.
  4. Select the polyline.
  5. Define the split line properties in the dialog box. The direction of the arrow in the floor plan indicates the area defined by the split line.

    Split Line Properties

  6. Confirm by clicking OK.
  7. If necessary, refresh the floor by pressing F5.


  • With the Automatic Floors | Add Split function you can both add the line chain and define it as a split line.
  • The object type of the split line is Split Lines.