IfcGasTerminalType

Definition from IAI: The element type IfcGasTerminalType 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 get assigned by an element occurrence instance through the IfcShapeRepresentation.Item[1] being an IfcMappedItem.

A gas terminal type is used to define the common properties of a gas terminal that may be applied to many occurrences of that type. Gas terminal types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcGasTerminalType are represented by instances of IfcFlowTerminal 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_GasTerminalTypeCommon: common property set for all gas terminal types

Pset_GasTerminalTypeGasAppliance: property set for all gas appliance terminal types

Pset_GasTerminalTypeGasBurner: property set for all gas burner terminal types

HISTORY: New entity in IFC Release 2x2.

EXPRESS specification:

ENTITY IfcGasTerminalType

SUBTYPE OF (

IfcFlowTerminalType);

PredefinedType

IfcGasTerminalTypeEnum;

WHERE

WR1

(PredefinedType <> IfcGasTerminalTypeEnum.USERDEFINED) OR ((PredefinedType = IfcGasTerminalTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));

END_ENTITY;

Inheritance graph

ENTITY IfcGasTerminalType;

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 IfcFlowTerminalType;

ENTITY IfcGasTerminalType;

PredefinedType

IfcGasTerminalTypeEnum;

END_ENTITY;