Link to this pageThis annex contains change logs comparing this release with prior releases.
Updates to this publication are described below.
| Date | Description |
|---|---|
| 2016-08-23 | Initial draft with proposed data types. |
| 2016-08-30 | Added referents and types to support variable cross sections. |
| 2016-10-10 | Added spatial entities for infrastructure. |
| 2016-11-16 | Added example for bridge geometry using alignment curves and string lines based on offset curves. |
| 2016-12-05 | Added IfcSectionedSolidHorizontal; removed IfcFixedDirectionSweptAreaSolid, IfcRelPositions, and spatial entities for infrastructure; updated examples to use new data types. |
| 2017-01-20 | Added and corrected new Where rules, removed Schramm transition curve type (identical to biquadratic parabola), documented transition curve types and triangulated irregular networks. |
| 2017-01-24 | Updated examples, corrected reported errors, added guidance for alignment curve types, added links for reporting issues. |
| 2017-01-26 | Added example for IfcLinearPlacement, marked as Release Candidate 3 |
| 2017-03-02 | Deprecated IfcClothoidalArcSegment2D, corrected errors in examples, clarified descriptions for vertical curves. |
| 2017-03-10 | Replaced IfcCartesianPointList2DLabelled with TagList attributes at IfcCartesianPointList2D and IfcCartesianPointList3D, subtyped orphaned alignment definitions from IfcGeometricRepresentationItem, fixed formatting errors in rules and examples. |
| 2019-03-24 | Added bridge specific types and entities for the IFC Bridge extension. Added model views for bridges. See Change log for details |