IfcCoveringType

Definition from IAI: 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

1. 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;