Export an IFC file from a Civil 3D drawing.
Why export to IFC?
- Share your designs with others who may be using different software.
- Collaborate more effectively in BIM (Building Information Modeling) projects.
- Maintain data integrity throughout the project lifecycle.
To export an IFC file
- Open the drawing to be saved to IFC.
- Click Add-ins tab
IFC Infrastructure panel Export to IFC
.
- In the Save As dialog, navigate to a destination directory.
- Click Save.
About IFC GUIDS
All exported objects are assigned an IFC GUID that is retained in a property set value. This GUID is used in subsequent exports allowing for consistent identification. This applies to all objects with the exception of the sub parts of corridors which are assigned new GUID's during each export.
Geographic Location Datum
- An existing Map 3D geographic location marker in the drawing.
- The midpoint of the surface named in the configuration file.
- The midpoint of the largest surface.
- The midpoint of the longest alignment.
- The midpoint of the drawing extents.
Coordinate System
The coordinate system of a drawing exports to the IFC File. It is recommended that you use a European Petroleum Survey Group (EPSG) based coordinate system. All other coordinate systems will report a warning in the event viewer. There is an option to only support exporting coordinate systems that have EPSG equivalents.
Drawing Units
The IFC exported file will use the same units as the drawing: ether meters or feet. US survey feet are supported with the extension, but third party tools may not import the data as they are not officially supported by IFC. Learn more.