Natural language names
Geometrische Repräsentation bezogen auf Präsentations-Layer
Layered Item
Item composite
Semantic definitions at the type
Type definition

The IfcLayeredItem is the collection of all those items, that are assigned to a single layer. These items are representation items or complete representations (IfcRepresentationItem, IfcRepresentation). If an IfcRepresentation is referenced, all IfcRepresentationItem within its set of Items are assigned to the same layer.

NOTE  Definition according to ISO 10303-46:
The layered things type selects those things, which can be grouped in layers.
NOTE  Corresponding ISO 10303 name: layered_item. It was called layered_things in the ISO/CD version and had been renamed to layered_item in the ISO/IS final version. Please refer to ISO/IS 10303-46:1994, p. 13 for the final definition of the formal standard.
HISTORY  New type in IFC2x2.
Select definition
Formal representations
XML Specification
 <xs:group name="IfcLayeredItem">
   <xs:element ref="ifc:IfcRepresentation"/>
   <xs:element ref="ifc:IfcRepresentationItem"/>
EXPRESS Specification
TYPE IfcLayeredItem = SELECT (

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcPresentationLayerAssignment

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