Hi,I was trying to open the attached IFC4 file in Revit 2017 which contains just one wall (L=4000mm, H=3000mm, thk=200mm).
When I opened this file in Solibri, DDS CAD, and XBIM viewer, the wall dimensions were correct but when I tried to open it in Revit wall dimensions were converted to feet in a weird manner. Every 1mm was converted to 304.8mm.
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Gelöst von L.Maas. Gehe zur Lösung
I see also wrong values (factor 1000) coming through in Revit 2017.1. I started with a metric template (mm).
So definitely an import error.
Checking the IFC file I see that IFCUNITASSIGNMENT is empty.
When referencing the units in the file like this:
#42=IFCUNITASSIGNMENT((#9,#10,#11,#12,#13,#14,#15,#16,#17));
Then it starts to work.
I do not know enough about the IFC standards to determine if it is a mistake in the source file or in the import process.
Louis
Please mention Revit version, especially when uploading Revit files.
Thanks Enllnt for your help.
I found that I set the project units twice in my C# code which generates the IFC file ,and I think that the import process logic in Revit considers the US system or the template units if it was null (line #42 in the attached IFC) even if it was initialized with UK units (line #8 in the attached IFC) unlike other BIM apllications.
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