Structural Connections not exported via Document.Export (Revit 2018/Python)

[igmuz]

I am trying to export REVIT Structural Connections to IFC with Document.Export.

When export is run from Python, all Generic Models with Family Category set to "Structural Connections" get exported, while none of the REVIT Structural Connections is exported.

From User Interface I manage to export both without a problem. In Family Mapping File, Revit Category Structural Connections is mapped to IFC Class Name IfcBuildingElementProxy.

Python code is shown below:

options=IFCExportOptions()
options.ExportBaseQuantities = False
options.FileVersion = IFCVersion.IFC2x3CV2
options.SpaceBoundaryLevel=0
options.WallAndColumnSplitting=False
options.FamilyMappingFile="D:\IFC_options.txt"
options.AddOption("ExportInternalRevitPropertySets","true")
options.FilterViewId = views[i].Id
DocumentManager.Instance.CurrentDBDocument.Export("D:\IFC eksport","Structural_Connections.ifc",options)

[jeremytammik]

OK, I got your macro to run successfully on my system, and it displayed the message box saying, IFC exported.

Now what?

Should I manually scan the IFC file for something?

If so, for what?

[igmuz]

The macro generates file "Export Structural Connections_API.ifc" and saves it in current file folder.

You will notice that, when export is run from API, none of the REVIT Structural Connections are exported, although Generic Models with Family Category set to "Structural Connections" gets exported.

If you export model to IFC via User Interface, both type of structural connections get exported.

IFC exported by user interface looks like this:  

And when exported via API, structural connection defined via REVIT Add-In is not exported:

[jeremytammik]

You say, 'you will notice that...'.

I performed the export and did not notice anything at all, except that an IFC file was generated.

What does one need to do to notice it, please?

Do you possibly mean something like 'download and install this or that free open source IFC viewer, open the IFC file in that, and note that...'?

🙂

[igmuz]

Here is step-by-step procedure:

1. Run macro.

    "Export Structural Connections_API.ifc" is generated in the current file folder.

2. Do IFC Export via User Interface (File->Export->IFC).

     You can call this IFC file for example "Export Structural Connections_UI.ifc"

3. Open both IFC files in IFC viewer of your choice.

"Export Structural Connections_UI.ifc" looks like this:

"Export Structural Connections_API.ifc" looks like this:

4. Note that REVIT Structural Connection below column on the left is missing in "Export Structural Connections_API.ifc". That is the bug we are trying to fix! 🙂

[jeremytammik]

What exact version and build of Revit are you using?

[jeremytammik]

Dear Igor, 

What version of Revit are you using?

Maybe, the reason the development team cannot reproduce the issue is due to an older version at your end.

Thank you!

Cheers,

Jeremy

[igmuz]

Hi Jeremy,

I am using Revit Structure 2018.3.

[jeremytammik · Accepted solution]

Can you try it out in Revit 2019 or Revit 2020, please? It may well be resolved now. Thank you!

[igmuz]

Hi,

In REVIT 2019 it works like a charm. 🙂

Thank you for all of your help Jeremy.

[jeremytammik]

Very glad to hear so. Thank you for your appreciation!