Wrong data type for CompressiveStrength

[Moult]

The data type for the CompressiveStrength property should be a pressure measure and a single value.

Revit has it currently as a multiline tabular value: https://github.com/Autodesk/revit-ifc/blob/master/Install/Program%20Files%20to%20Install/IFC%20Shared%20Parameters-RevitIFCBuiltIn_ALL.txt#L1252

[AngelVelezSosa]

We will check on this. We have found bugs in the past in the files provided by bSI which is how this is generated.

[Moult]

I also use the bSI generated files for the BlenderBIM Add-on and it seems to be correct there:

#22787= IFCSIMPLEPROPERTYTEMPLATE('3gEaM0qUmHuO00025QrE$V',$,'CompressiveStrength','The compressive strength of the concrete.',.P_SINGLEVALUE.,'IfcPressureMeasure','',$,$,$,$,.READWRITE.);

[WawanSolihin]

I look at the generated shared parameters. The problem of the data type is because of the same property name (= shared parameter name) occurs multiple times and in other instances they are actually property table value, e.g. Pset_MechanicalPanelInPlane.CompressiveStrength
The current mapping is not able to handle the above situation well and can only take one of the datatypes only, which unfortunately it seems take the one with PropertyTableValue. We are changing this with a new parameter naming style that prefixes the parameter name with the Pset name. It is already used in Revit 2023, and the next update to the open source 2022 will likely include this as well. In this style, there will be no overlapping definition, every property is uniquely mapped to a shared parameter.

[Moult]

Awesome! That's really great to hear and that's a good solution for the future. Where can I download the shared params file for Revit 2023?

[AngelVelezSosa]

@WawanSolihin we should update the files in the place that @Moult found them.

[WawanSolihin]

It will be installed together with the open source installer for 23.1.1.0

Or you can get it here:
https://github.com/Autodesk/revit-ifc/blob/Release_23.x.x/Source/RevitIFCTools/IFC%20Shared%20Parameters-RevitIFCBuiltIn_ALL.txt
https://github.com/Autodesk/revit-ifc/blob/Release_23.x.x/Source/RevitIFCTools/IFC%20Shared%20Parameters-RevitIFCBuiltIn-Type_ALL.txt

[Moult]

So I'm a little confused here, there's shared params in two locations: https://github.com/Autodesk/revit-ifc/tree/master/Source/RevitIFCTools and https://github.com/Autodesk/revit-ifc/tree/master/Install/Program%20Files%20to%20Install

Which is the appropriate location?

[WawanSolihin]

They are supposed to be the same.
Presse note that the correct one is according to the link I sent earlier from branch 23.x.x.
The master branch version contains additional psets for the future support for IFC 4.3.

[Moult]

Ah OK, I'm looking at the master branch, which I guess is still outdated?

[WawanSolihin]

I think the matter branch contains up-to-date one + IFC4.3 propertyset. But this is not final/released yet