Definition from buildingSMART: The element type (IfcColumnType) defines a list of commonly shared property set definitions of a column and an optional set of product representations. It is used to define a column specification (i.e. the specific product information that is common to all occurrences of that product type).
NOTE: The product representations are defined as representation maps (at the level of the supertype IfcTypeProduct, which gets assigned by an element occurrence instance through the IfcShapeRepresentation.Item being an IfcMappedItem.
A column type is used to define the common properties of a certain type of column that may be applied to many instances of that type to assign a specific style. Column types may be exchanged without being already assigned to occurrences.
The occurrences of the IfcColumnType are represented by instances of IfcColumn.
HISTORY New entity in Release IFC2x Edition 2.
|PredefinedType||:||Identifies the predefined types of a column element from which the type required may be set.|