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IFC/ifcXML Specifications
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Latest IFC/ifcXML Specifications (IFC2x3)
The IFC2x Edition 3 (short IFC2x3) is the latest official IFC release recommended for implementation. It has been published in February 2006 and contains several improvements over the IFC2x Edition 2 Addendum 1 release from July 2004. The IFC2x3 has been the first IFC release following the new IFC release methodology and has been already used in prototype implementations.
- New releases of IFC and ifcXML are now published at http://www.iai-tech.org. The first update includes final versions of ifcXML2x2 and ifcXML2x3 and IFC2x3 Technical Corrigendum 1. (29 June 2007)
- IFC2x3 (Online documention)
The master document for IFC2x Edition 3 contains the EXPRESS (ISO 10303-11) language definition, the EXPRESS-G graphical representation and the documentation of the IFC object model. The publication format is a set of hyperlinked HTML pages, also including the property set definitions for this IFC release and a change log.
- IFC2X3_EXPRESS_longform_Final.zip
The EXPRESS longform schema is the nominal, computer readable part of
the IFC object model. It is the baseline for all implementations of the
EXPRESS based IFC object model.
- IFC2x3_Final_HTML_distribution.zip
The zip archive has the same content as the IFC2x3 (Online
documentation). It can be downloaded for offline working.
- Implementation guides for IFC2x2 are published
to provide guidance for the implementation of the IFC2x2 object model.
They contain explanations for the correct and recommended population of
the IFC object model with examples and further explanations. Both
guides represent work in progress.
- IFC Implementation guide 1.7
The IFC implementation guide is the general guide for IFC
implementation. The examples used follow the EXPRESS based IFC object
model and are provided using the *ifc file format (STEP physical file,
ISO 10303-21)
- ifcXML implementation guide 1.0
The ifcXML implementation guide discusses the specifics of the XML
based implementation of the IFC object model.
Issues and Resolutions of the specifications
Go to the Issues
and Resolutions page.
General Documentation
Contact
The Model Support
Group (MSG)
Previous IFC/ifcXML Releases
Older versions of IFC implementation guide,
modelling guide, and other documents
- IFC2x(2) Implementation Guide (version 1.6)
now available (as from 19/07/2002)
The implementation guide is an accompanying document to the IFC2x
release specification. The version 1.6 is the first that has been
updated to take the first content of the IFC2x Edition 2 into account.
Further version will include more parts of IFC2x Edition 2.
- Ifc2x
Extension Modelling Guide now available (as from 05/07/2001)
- Ifc2x Implementation Guide (Version 1.4) now
available (as from 19/07/2002)
The implementation guide is an accompanying
document to the IFC2x release specification. It targets the IFC
implementation community. It contains further descriptions, implementer
agreements and examples in support of the IFC2x
specification of and helps the reader to correctly
interprete the specification. It concentrates on "leave-node" objects,
like walls, space, building and the optional/required components, like
shape representation, quantities, identification or history. Current
release is version 1.4.
- IFC
2x Technical Guide
- Model Integration Guide Version 1.0
- Process Modelling for IFC Development
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