Importing CAD data
Posted by Mike Bienemann on 28-Jan-16 10:45 AM
DesignBuilder supports 2 types of CAD data import:
The rest of this page discusses the 2-D DXF floor plan import.
You can import 2-D DXF floor plan files created in AutoCAD or other CAD programs using the Files > Import > Import DXF data menu command. This starts the DXF Import Wizard which prompts you for the name of the file, the units of your DXF data and the attachment height. The DXF data can be moved around the model once it is imported, so you do not need to know the exact attachment height - you can import the DXF data at zero height and move it to the correct location using the Move command.
Note that DesignBuilder requires DXF data to be saved in R-11 format. Other DXF format may fail to load.
If you are having trouble importing the DXF data you should:
1) Check that you have specified the correct units. If the DXF data looks too small or too large you may have selected the wrong units. DXF data itself does not have units so you may need to find out the units used in the source CAD model before attempting to import the DXF file.
2) Try 'cleaning up' the CAD data before exporting it to avoid paperspace, grids, fittings etc from being included in the DXF file.
Once the DXF data is imported and correctly positioned you can use it to define the position of blocks and partitions. A typical process might go like this:
We have started work on a facility to import 3-D CAD data including the geometry of walls, windows, roofs etc using the standard gbXML data exchange format. This option should be ready for version 2.
See also: 3D CAD Interoperability, IFC, gbXML etc