IfcCoveringType

Definition from buildingSMART: The IfcCoveringType defines a list of commonly shared property set definitions of an element and an optional set of product representations. It is used to define an element 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[1] being an IfcMappedItem.

A covering type is used to define the common properties of a certain type of a covering that may be applied to many instances of that type to assign a specific style. Covering types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcCoveringType are represented by instances of IfcCovering (or its subtypes).

HISTORY New entity in Release IFC2x Edition 2.

Informal proposition

The material assignment, if provided using the IfcRelAssociatesMaterial relationship, shall not reference the IfcMaterialLayerSetUsage.

EXPRESS specification:

ENTITY IfcCoveringType

SUBTYPE OF (

IfcBuildingElementType);

PredefinedType

IfcCoveringTypeEnum;

END_ENTITY;

Attribute definitions:

PredefinedType

Predefined types to define the particular type of the covering. There may be property set definitions available for each predefined type.

Inheritance graph

ENTITY IfcCoveringType;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObjectDefinition;

INVERSE

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

IsDecomposedBy

SET OF IfcRelDecomposes FOR RelatingObject;

Decomposes

SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

ENTITY IfcTypeObject;

ApplicableOccurrence

OPTIONAL IfcLabel;

HasPropertySets

OPTIONAL SET [1:?] OF IfcPropertySetDefinition;

INVERSE

ObjectTypeOf

SET [0:1] OF IfcRelDefinesByType FOR RelatingType;

ENTITY IfcTypeProduct;

RepresentationMaps

OPTIONAL LIST [1:?] OF UNIQUE IfcRepresentationMap;

Tag

OPTIONAL IfcLabel;

ENTITY IfcElementType;

ElementType

OPTIONAL IfcLabel;

ENTITY IfcBuildingElementType;

ENTITY IfcCoveringType;

PredefinedType

IfcCoveringTypeEnum;

END_ENTITY;