IFC-geometry issue - walls with openings

[teemu.kangasmakiRSGGS]

We´re having issues with our IFC-models which we don't create but get from designers. Recently the architects have been implementing Revit 2023 and almost all of the models have blank areas where should be walls.

I´ve recreated this issue by myself and it is demonstrated in the attached picture.

If you have a wall and at the end of the wall there is an opening- such as door - the IFC version doesn´t have anything above the opening. But if you move this opening approx. 100 mm from the endpoint this issue disappears.

[barthbradley]

https://knowledge.autodesk.com/support/revit/troubleshooting/caas/sfdcarticles/sfdcarticles/Scope-bo...

[Simon_Weel]

Seen that before. Probably a glitch in the IFC Exporter. Do you use the plug-in version or the native one? If you use the plug-in version, you better post the problem at Issues · Autodesk/revit-ifc · GitHub

[teemu.kangasmakiRSGGS]

Thanks for this reply.

As far as I understand the issue it is not affected by scope box or section box. The issue arises undependent from the active view and the tick box "export only element visible in view".

Typically our designers deliver us a complete model of the building to be built. Not floor by floor or divided by some defined areas/sections.

[teemu.kangasmakiRSGGS]

Thanks, I need to dig deeper on this one.

My version and the test was made with built-in exporter but I don't know which exporters our oursourced designers use when providing us the IFC's. Have to check this one out.

Some of the examples were even more strange since some walls are missing the bearing concrete part of the wall. And no, they are not using the parts functionality and somehow excluding the precast this just happens.