Thomas Liebich
Thomas Liebich
Avoid the new introduction of direct attributes instead of using psets consistently - here IfcKerb
In `[IfcKerb ](http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcKerb.htm)`as new entity in IFC4.3.0 there is a direct attribute Mountable. this could be best handled as a property at Pset_KerbCommon Now since we deprecated almost all such...
a call particularly to all software implementers in the past, we discussed at various occasions, e.g. ISG Meetings, the need to add parameters to the IFC exchange file, that allows...
[1. Scope](http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/content/scope.htm) this requires update - e.g. to correct layout (compare with [IFC4.0.2.1](https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/link/chapter-1.htm) and subpage) but also to mention that scope now includes infrastructure. N.B. usually the review by ISO...
There are two separate structures for exchanging property sets and quantity sets. But in reality it is often difficult to determine, what is a property and what is a quantity....
as suggested by @pipauwel, lets open a new thread. I will label it both as **enhancement** and **governance**, because it can only be answered having both in mind. **enhancement** -...
today 98% of all properties that are either set by users in BIM software, or are derived by the software systems based on user entries, are handled by property sets....
the following list describes conversion based units defined within IFC. see latest definition at [IfcConversionBasedUnit](https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/HTML/link/ifcconversionbasedunit.htm). it defined degree [0..360] as a unit in surveying (and infrastructure) gradian (or gon) is...
The definition of scale conflicts (or unnecessarily duplicates) the definition of IfcProjectedCRS.Unit. There are proposals to repurpose this definition with the scale of distorsion (see work by John Mitchell for...