Hello there. Im currently working on a open BIM project with Revit where im stuck with what seems like a technicall limitation of IFC. Here is the issue: I modell separate Topographies in Revit and need to export it as IfcSite but the topographies themselves have different Propertysets. IFC though…

Hello Kristof, I work with Allplan and haven’t any problem to have several IfcSite in one project, as well as several buildings (IfcBuilding) on every site. Here is a simple example - one IfcProject, four IfcSite and every IfcSite contains one or two IfcGeographicElement(s). For every IfcGeographi…

P.S.: here is in IFC4.0, I missed that you were asking for IFC4.0, result is the same: TopoSites_IFC4.0.ifc (9.9 KB)

Basic geometry comes in at my end. [afbeelding] [image] Where and how will my colors be saved in IFC? IFC Hi , I still can’t figure out how colors are saved in IFC and why they are lost during the conversion proces. It is kind of important to set and save the colors in…

This misunderstanding creates a lot of frustration for Vectorworks users. I have removed IfcSite as data mapping and replaced it with IfcGeographicElement for IFC4 and IfcBuildingElementProxy for IFC2x3 or later. USERDEFINED type for the different Site Models can be set to SITEMODEL or TERRAIN_SURFA…

Interesting. Thank you for all the answears. I thought that the IfcSite itself could be split into those subcategories creating smaller separate parts. I didnt know about the IfcGeographicElement. I thought Id need to export it as IfcElementCompositionEnum which is Inherited from IfcSpatialStructur…

@Kristof1995 I think there needs to be some clarification here: You can have multiple IfcSites in a project. The fact Revit cannot do this is a Revit specific limitation. If you export things out of Revit under IfcSite, these are invalidly created as if they were elements, not actual spatial eleme…

Questions about IFC Site in IFC 4.0

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Hans_Lammerts January 20, 2022, 10:39pm 4

Basic geometry comes in at my end.

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Questions about IFC Site in IFC 4.0

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