You can export Revit building modeling information to the Industry Foundation Classes (IFC) file format.
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About the IFC File Format
The Industry Foundation Classes (IFC) file format is maintained by buildingSMART®. IFC provides an interoperability solution between different software applications. The format establishes international standards to import and export building objects and their properties.
About Revit LT and IFC Revit LT provides fully certified IFC import and export based on buildingSMART® IFC data exchange standards.
Export a Model to IFC
Save a model as an IFC file for use with an IFC-certified application that does not use the RVT file format.
Specify IFC Entities for Families Revit LT exports building elements to an IFC file based on the categories (and subcategories) to which the elements belong.