Reply To: QUESTIONS ABOUT IFC_​​​PREDEFINEDTYPE GDL PARAMETERS ?

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February 24, 2020 at 10:55 #18582
Péter Baksa
Keymaster

Hi,

These are defined by the ICF standard. For example ifcCovering has a PredefinedType attribute, whose type is IfcCoveringTypeEnum. I am not sure where the exact numerical values are defined, maybe more help is available in an IFC forum.

Here is a document about how the built-in IFC 4 type mapping handles this parameter.

Péter Baksa
Library Platform, Software Engineer
GRAPHISOFT SE