The worldwide authority driving transformation of the built asset economy through creation & adoption of open, international standards. The worldwide authority driving transformation of the built asset economy through creation & adoption of open, international standards.

Shall get those standards to generate classes for Eiffel, as it seems that they are generated from some standard definition…

Those specfications seems to be there: http://www.buildingsmart-tech.org/specifications http://www.buildingsmart-tech.org/ifc/IFC4/Add1/html/ with the now customary GitHub repositories. I shall promptly cloned all those:

• BCF-API  Web service specification for BIM Collaboration Format (JavaScript)
• BIMSieBIMSie is the standard interface for BIM in the cloud
• BCF-XML XML specification for BIM Collaboration Format
• IfcScript A scripting tool to generate IFC example files. 
• IfcDoc IFC Documentation Generator
• IFC4-LV IFC4 Library View
• IFC4-CV IFC4 Coordination View

I have been looking at programming Frameworks for IFC (Industry Foundation Classes), the open standard to exchange Building Information Models. I assume you are at least aware of what they are and what they contain…

While most commercial BIM software currently exports and opens IFC documents, I was interested to learn about actually doing something directly with these files, e.g. analyzing and visualizing or even generating them.

There are a few free IFC viewers available. Tekla BIMsight and Solibri Viewer are both recommended (the latter even cross-platform). But they are closed and can not be adapted for other purposes. However, I also read about a few interesting Open Source projects for creating and opening IFC files.

• BIMserver : http://bimserver.org
• ifcOpenShell : http://ifcopenshell.org
• ifcGears : http://ifcgears.com
• IFC-SDK : http://www.osor.eu/projects/ifc-sdk
• Open IFC Tools : http://www.openifctools.org