Contents of a DXF file for automatic floor/room/zone creation of LENIXML files.

 The geometry of a floor in a LENI calculation can be defined in a DXF file. Normally there is one DXF file for every floor.

Some layers have been defined as special layers:

• LENI_ROOM : Any polylines (not lines) on this layer will be considered to be a room.
• LENI_ZONE : Any polylines (not lines) on this layer will be considered to be a zone.
• LENI_VERT_WINDOW : Any 2 vertex (single segment) polylines on this layer will be considered a window.
• LENI_ROOF_LIGHT: Any polylines (not lines) on this layer will be considered a rooflight area.
• LENI_ATRIUM: Any polylines on this layer will be considered as atriums in this floor.

These rules must be followed:

1. Room polylines cannot be self intersecting.
2. Room polylines cannot intersect with each other or zones.
3. Room polylines must be closed.
4. Zone polylines have to be completely inside rooms.
5. Zone polylines cannot intersect with each other.
6. Zone polylines must be closed.
7. Window polylines must be within (a maximum of) 20cm (0.2m)  from room walls.
8. All polylines on these special layers must be at the top level of the DXF file, i.e. they cannot be inside blocks.
9. The DXF file must have a scale of 1.0 = 1 Meter
10. North is positive Y.

Here is an example:

Two Rooms and Four Zones

Windows are single segment POLYLINEs:

 

For floors which are more than 100 meters wide or long here are some suggestions for the widths of the polylines to make them more visible: