| Description |
Export data in buildingSMART IFC format. This format is commonly used for the exchange of BIM data.
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| Access |
Home / Data / Export / buildingSMART IFC
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| Requirements |
Xchange buildingSMART IFC module
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| Options |
The following properties allow control of the export.
| General |
Description |
| Content |
If there are objects selected then only selected objects are exported.
Displayed - If no objects are selected then only visible objects are exported.
All - If no objects are selected then all objects are exported regardless of whether they are visible.
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| Version |
Select the IFC format version the file should be written to. |
| Export polygon as |
Select whether polygons should be exported to IFC as Surfaces or Lines. |
| Curve Tolerance |
Enter the maximum offset distance from a line to the chord between adjacent vertices in the line. Use this value to control the smoothness of circular arcs and splines that need to be output as straight line segments. |
| Transformation |
To apply a transformation to the exported objects, select a transformation from the list of existing 2d conformal transformations. To create a transformation, see Add or Edit a Transformation Set below. |
| Lookup Tables |
Description |
| Layer |
Select the Layer lookup table to be used during the export. |
| Attribute Definition |
Select the Attribute Definition lookup table to be used during the export. |
A blank selection for a lookup table indicates that no lookup will be performed.
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| Notes |
- The IFC format does not support text so these objects are ignored during the export.
- Point objects are exported as IfcCartesianPoints in FCL
- Line, alignments and polygon objects are exported as IfcPolylines in FCL
- Transition curves and 2D circular arcs are exported as IfcPolylines in FCL (straight line segments).
- Cylinder and extruded profile shapes are exported as IfcExtrudedAreaSolid
- Sphere shapes are exported as IfcSphere
- Reducer shapes are exported as IfcExtrudedAreaSolidTapered
- Other shapes are exported as IfcConnectedFaceSet
- Terrain models are exported as IfcFaceBasedSurfaceModel
- When exporting from a project with a coordinate system defined, to software which do not support large coordinate values, apply a Transformation on export that transforms the coordinates to values closer to 0,0,0.
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| Related topics |
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