Everyone is talking about IFC4.3 - but many of us are still required to use IFC2x3, and besides that: what's the big deal about IFC4.3 anyway?
In this video I'm outlining the differences between the "old" IFC2x3 and the IFC4.3, before we jump into Autodesk Civil 3D and have a look at how to export IFC4.3 - please use the Timestamps provided below if you wish you jump to a certain topic:

0:36 What's so special about IFC4.3?
3:16 Exporting IFC4.3 from Civil 3D
4:49 Reviewing IFC4.3
5:37 Advanced export configurations in Civil 3D
8:20 Set project base point (for use in Revit)




Useful links:
Autodesk Revit IFC Manual: https://damassets.autodesk.net/conten...
BuildingSMART Denmark IFC Manual: https://simbim.es/img/cms/pdf/IFC-gui...
Bond Brian's BIM Blog series on IFC export: https://bimblog.bondbryan.co.uk/ifc-i...

Current download links for Revit IFC (sidebar): https://bim-me-up.com/​
Autodesk App Store: https://apps.autodesk.com​
Revit IFC on Github: https://github.com/Autodesk/revit-ifc​
Wiki OS with useful tips around openBIM, not only for Revit: ​ https://wiki.osarch.org/index.php?tit...

Recommended freeware IFC Viewers:
Open IFC Viewer, very fast and supports latest IFC Versions: https://openifcviewer.com/​
BIM Vision, powerful viewer, offers additional features for measurement or easy display of classifications: https://bimvision.eu/download/​
BIMcollab IFC Viewer, popular viewer, offers direct connection to the BIMcollab platform: https://support.bimcollab.com/en/zoom...
FZK Viewer, a bit oldschool, not good with big models, but very accurate display of properties: https://www.iai.kit.edu/1302.php​

You can also view IFC files in following Autodesk solutions:
Autodesk online Viewer (free): https://viewer.autodesk.com/​
BIM 360 platform / Autodesk Docs (included in the AEC collection): ​https://www.autodesk.com/products/aut...
Autodesk Navisworks (Manage / Simulate, included in the AEC collection): https://www.autodesk.com/products/nav...

I also regularly blog about IFC and interoperability (mostly in German):
https://bim-me-up.com/​
https://blogs.autodesk.com/bimblog/​