...
- no hidden layers and noise,
- all rooms have unique labels,
- all labels are inside room boundaries they are attached to,
- all constructive elements like walls, stairs, elevators, doors and room labels have specific layer for each,
- walls have thresholds,
- furniture is in a separate layer from all the other elements,
- no attribute blocks, 3d faces and hatch; and
- no external references
- Unit set to meters
It is possible to process DWG-files that don’t separate the information above in different layers, but it requires more manual work on the DWG-files before we can start processing them. This also applies if an element in the list above is used together with the following CAD types. We therefore recommend not using these types:
...