List of known invalid IFC practices

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IFC bsi icon.png This page is relevant to understanding Industry Foundation Classes (IFC). The Industry Foundation Classes (IFC) Category includes all pages related to Industry Foundation Classes (IFC).

See also Category:IFC invalid practices

Autodesk Revit

Summary Last Verified
Using Open IFC, any objects using Tessellations are not supported. For example, if you export an IFC4 from ArchiCAD, unless you force it to use parametric solids, Revit will be unable to show the geometry in these IFCs. 2021-04-12
Using Link IFC, IfcSpace will convert into Revit generic models, which is hardcoded. This makes it impossible for rooms to contain elements. The only workaround is to use Open IFC instead. 2021-04-12
When exporting, Revit will not record metric units correctly for the geolocation map conversion. This makes geolocation useless. 2021-04-12

Bentley OpenBuildings Designer

Summary Last Verified
IfcSurfaceStyleShading is still exported without an a Transparency attribute, even if an IFC4 export is done. This is technically correct if you check in a pre-addendum version of IFC4, but is not useful to users or updated IFC4 parsers. 2019-05-23