IfcDuctFittingType

Definition from IAI: The element type IfcDuctFittingType defines a list of commonly shared property set definitions of a duct fitting and an optional set of product representations. It is used to define an duct fitting 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 get assigned by an element occurrence instance through the IfcShapeRepresentation.Item[1] being an IfcMappedItem.

A Duct fitting type is used to define the common properties of a duct fitting that may be applied to many occurrences of that type. A duct fitting is a junction or transition in a flow distribution system (e.g., elbow, tee, etc.). Duct fitting types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcDuctFittingType are represented by instances of IfcFlowFitting or its subtypes.

Property Set Use Definition:

The property sets relating to this entity are defined by the IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. It is accessible by the inverse IsDefinedBy relationship. The following property set definitions specific to this entity are part of this IFC release:

- Pset_DuctFittingTypeCommon: common property set for all duct fitting types

> HISTORY: New entity in IFC Release 2x2.

EXPRESS specification:

ENTITY IfcDuctFittingType
SUBTYPE OF ( | IfcFlowFittingType);
PredefinedType | : | IfcDuctFittingTypeEnum;
WHERE
WR2 | : | (PredefinedType <> IfcDuctFittingTypeEnum.USERDEFINED) OR ((PredefinedType = IfcDuctFittingTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));
END_ENTITY;

Attribute definitions:

PredefinedType | : | The type of duct fitting.

Inheritance graph

ENTITY IfcDuctFittingType;
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 IfcDistributionElementType;
ENTITY IfcDistributionFlowElementType;
ENTITY IfcFlowFittingType;
ENTITY IfcDuctFittingType;
PredefinedType | : | IfcDuctFittingTypeEnum;
END_ENTITY;