Welcome

The site is intended to be a source of information for the technical specifications of buildingSMART and particularly the IFC specification. This includes

• the buildingSMART interoperability specifications
  
• the IFC release specifications
• the ifcXML release specifications
• the Property Set definitions
• the IFC View definitions
  
• accompanying documentations
• development schedule and development news
• frequently asked questions
  
• services and guidelines
• implementation guidelines, supporting tools and information
• implementation examples and source code
  

The www.iai-tech.org site is managed by the Model Support Group MSG within buildingSMART international. The MSG is established as a technical group and is responsible for the IFC development. It provides services for

• IFC extension integration (developing new releases of IFC
• IFC specification documentation (editorial work for the IFC release)
• IFC maintenance (continuous improvement of the specification and running the issue database)
• IFC property set content development and publishing the property set XML definitions
• IFC implementation support (supporting the Implementer Support Group and certification process)
• ifcXML development (converting the IFC specification into XSD)

To get started choose your subject in the navigation menu on the left or at the top of this page. You must be a registered user to access some of the information on these pages (like the "Download" section). See details on registration here.

Active participation is encouraged and welcome. You can register issues on the IFC specification and other specifications using the issue database. See details on using the issue database here.

We invite everyone to comment on the upcoming next release of IFC, working title IFC2x4. Goto to the IFC2x4 beta3 page for download and to the IFC Review issue database for comments.

If you have any questions please contact the site administrator or one of the MSG members.

The Industry Foundation Classes, IFC are an open, neutral and standardized specification for Building Information Models, BIM. It provides support for

• data exchange among software applications within the AEC/FM industry sector
• model-based description of spatial elements, building elements, MEP elements and other components that constitutes a building or facility
• shape representation of such components
• relationships of such components between each other and to the spatial and system structure
• attachment of properties, classifications, external library access, etc. to such components