Dion Moult

@MatthiasWeise a property facet only checks properties of that the element (i.e. itself, or inherited by its type if it has one). It does not check properties of the materials...

@pjanck no contradiction, just perhaps a misreading. @MatthiasWeise asked this: > Is it also allowed to use building elements like IfcWall (IfcWall -> IfcMaterial -> Material Property)? And so I...

@mysterieux30 the restriction base has no impact on the IFC data type. For attributes the IFC data type is fixed. For properties, the data type is specified using the `datatype`...

The URI is not part of the requirement, it's just metadata. Like the URI in other facets.

Yeah I was the one who wrote that table and at the time I believe the intention was to encourage users to use the bSDD where possible to guide users...

I'm OK with all classes :) Is it really that big of an issue? The UI thing sounds like it has a few solutions...

I use attribute for specifying projected crs names, mapconversion coords, context/subcontext identifiers, ifcmaterial categories and names, profile names, organisation names (for FM), documentinformation (for FM mainly), ifcgridaxis tags.

@hesrah I think the intention here is that IDS is trying to cater more for non-computer geeks, and to them 42.0 == 42. For attributes the IFC schema defines the...

Something to think about is that although the underlying primitives might be OK, sometimes there may be a need for an abstract layer to further restrict the character set. For...

I apologise I missed this thread and didn't reply earlier. For IFC4.3, there is a process outlined here: https://github.com/buildingSMART/IFC4.3.x-development/wiki/IFC-4.3.x-Change-Process (note the teams are a bit outdated, so feel free to...