IFC4.3.x-development
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buildingSMART
Repository to collect updates to the IFC4.3 Specification
For example on this page: http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcSurfaceStyle.htm  The IFC class is ALLCAPS (and hyperlinked, which leads to a broken link here). Should it be allcaps? If not, that's something to...
The description is: > Indication whether the length measures provided for the presentation style are model based, or draughting based. Do is True = model based and False = drafting...
Hello, I saw a little mistake and apparently some missing values in [IfcSIPrefix](http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcSIPrefix.htm) documentation:  Milli mistake was also in previous version but missing values not: https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/link/ifcsiprefix.htm
Currently applicable to IfcBuilding and IfcSite. Propose to add IfcActor so that existing functionality can be maintained. Also propose to rename to Pset_PostalAddress and add Pset_TelecomAddress - both are needed...
Originally brought up [here](https://forums.buildingsmart.org/t/using-parametertakesprecedence-in-ifcwindowtype-and-ifcdoortype/2574). I personally have never seen ParameterTakesPrecedence used. In the implementer agreement https://standards.buildingsmart.org/documents/Implementation/IFC_Implementation_Agreements/CV-2x3-181.html it basically states that it should always be false. I propose to mark it...
In some of our models we have quite a lot of openings, especially for slabs. It would be much easier (and leaner) to have one relationship manage multiple openings at...
Lighting engineers need to nominate the way light fixtures are controlled. Based on some work with a lighting engineer on luminaire schedules I'd propose a new property "ControlGear" with an...
Right now the IsReinforced property applies to pad footings only. Isn't this property useful for knowing whether slabs, blockwork walls (yes, not just concrete walls), or other elements are reinforced...
As you're probably aware in IFC4 we introduced several shortcuts in the serialization of step-xml by means of the tagless list-of-values configuration option. ### ifc2x3 ~~~xml ~~~ ### ifc4 ~~~xml...
If the TimeLag attribute of the IfcRelSequence entity is set to be worktime (IfcTaskDurationEnum.WORKTIME) it's not clear by which calendar the task relation lag should be calculated. In order to...
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Repository to collect updates to the IFC4.3 Specification