IFC4.3.x-development
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buildingSMART
Repository to collect updates to the IFC4.3 Specification
@SergejMuhic @TLiebich Fyi, I've reinstated the IFC4 definitions for IfcRelInterferesElements attributes, that were removed at some point https://github.com/bSI-InfraRoom/IFC-Specification/blob/develop/IFC4x3/Sections/Core%20data%20schemas/Schemas/IfcProductExtension/Entities/IfcRelInterferesElements/DocEntity.xml#L8-L16 https://github.com/buildingSMART/IFC4.3.x-development/commit/c4d44bc0afada289db4ecb40176a0662d681db4f I know the geometric behaviour changed a bit wrt infra interferences...
Also, the latest documentation of the IFCALIGNMENTHORIZONTAL is IMO not up-to-date. ENTITY IfcAlignmentHorizontal SUBTYPE OF (IfcLinearElement); END_ENTITY; where IfcLinearElement is ENTITY IfcLinearElement SUPERTYPE OF (ONEOF (IfcAlignmentCant ,IfcAlignmentHorizontal ,IfcAlignmentSegment ,IfcAlignmentVertical)) SUBTYPE...
Previous versions of the docs had B.1.1 Defined types B.1.2 Enumeration types B.1.3 Select types We only have B.2 Types I think the separated listing is better
@SergejMuhic @peterrdf > and a height deifned by its gradient segments which can be derived from a function that retrieves it from the segment start height, its placement and the...
Dear all. I find that the definition of IfcDirectrixDerivedReferenceSweptAreaSolid could benefit from some additional clarification. http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDirectrixDerivedReferenceSweptAreaSolid.htm @SergejMuhic @peterrdf I don't really know where the current description comes from. Doesn't seem...
Hello everyone, regarding to the "Difficult to understand - Let us know" I am making a frist try: The information provided at the attributes section of IfcAxis2Placement3D says, that if...
As part of the [BIM2SIM research project](https://www.researchgate.net/publication/354574261_BIM2SIM_-Development_of_semi-automated_methods_for_the_generation_of_simulation_models_using_Building_Information_Modeling) our research group has investigated the existance of relevant information for thermal building simulation and HVAC simulation in IFC. We compiled the information...
The Figure 6.1.3.35.F and Figure 6.1.3.41.J show IfcWallElementedCase and IfcSlabElementedCase. Both are deprecated and should not be used in the pictures to explain Element Decomposition of IfcWall and IfcSlab.
IfcVibrationDamper::PredefinedType should be IfcVibrationDamperTypeEnum instead of IfcDamperTypeEnum. ENTITY IfcVibrationDamper SUBTYPE OF (IfcElementComponent); PredefinedType : OPTIONAL IfcDamperTypeEnum; WHERE CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType IfcDamperTypeEnum.USERDEFINED) OR ((PredefinedType = IfcDamperTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));...
Hello, It is confusing that in the description of IfcCovering you write: "..using the inverse relationship Covers pointing to the building element is then accessible via IfcRelCoversBldgElements.RelatingBuildingElement". (http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCovering.htm) , but...
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Repository to collect updates to the IFC4.3 Specification