Class Ifc4::IfcAirTerminal

Nested Relationships

This class is a nested type of Struct Ifc4.

Inheritance Relationships

Base Type

Class Documentation

class Ifc4::IfcAirTerminal : public Ifc4::IfcFlowTerminal

An air terminal is a terminating or origination point for the transfer of air between distribution system(s) and one or more spaces. It can also be used for the transfer of air between adjacent spaces.

HISTORY New entity in IFC2x4

Type Use Definition IfcAirTerminal defines the occurrence of any air terminal; common information about air terminal types is handled by IfcAirTerminalType. The IfcAirTerminalType (if present) may establish the common type name, usage (predefined type), properties, materials, ports, composition, assignments, and representations. The IfcAirTerminalType is attached using the IfcRelDefinesByType objectified relationship and is accessible by the IsTypedBy inverse attribute. If the IfcAirTerminalType has ports or aggregated elements, such objects are reflected at the IfcAirTerminal occurrence using the IfcRelDefinesByObject relationship. Figure 210 illustrates air terminal type use. Figure 210 — Air terminal type use

Property Use Definition The property sets relating to this entity are defined by IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. Property sets may also be specified at the IfcAirTerminalType, defining the common property data for all occurrences of the same type. They are then accessible by the IsTypedBy inverse attribute pointing to IfcAirTerminalType.HasPropertySets. If both are given, then the properties directly defined at IfcAirTerminal override the properties defined at IfcAirTerminalType. Refer to the documentation at the supertype IfcFlowTerminal and ancestors for inherited property set definitions. The following property set definitions are applicable to this entity: Pset_AirTerminalOccurrence (PSET_OCCURRENCEDRIVEN) Pset_AirTerminalPHistory (PSET_PERFORMANCEDRIVEN) Pset_AirTerminalTypeCommon (PSET_TYPEDRIVENOVERRIDE)

Quantity Use Definition The quantities relating to this entity are defined by IfcElementQuantity and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. The following base quantities are defined and shall be exchanged with the IfcElementQuantity.Name = ‘BaseQuantities’. Other quantities, being subjected to local standard of measurement, may be defined with another string value assigned to Name. In this case a valid value for MethodOfMeasurement shall be provided.

Qto_AirTerminalBaseQuantities

Material Use Definition The material of the IfcAirTerminal is defined by IfcMaterialConstituentSet or as a fallback by IfcMaterial, and attached by the RelatingMaterial attribute on the IfcRelAssociatesMaterial relationship. It is accessible by the HasAssociations inverse attribute. Material information can also be given at the IfcAirTerminalType, defining the common attribute data for all occurrences of the same type. The following keywords for IfcMaterialConstituentSet.MaterialConstituents[n].Name shall be used:

Body: The primary material from which the object is constructed.

Port Use Definition The distribution ports relating to the IfcAirTerminal are defined by IfcDistributionPort and attached by the IfcRelConnectsPortToElement relationship. If the air terminal occurrence is defined by IfcAirTerminalType, then the port occurrences must reflect those defined at the IfcAirTerminalType using the IfcRelDefinesByObject relationship. Ports are specific to the IfcAirTerminal PredefinedType as follows indicated by the IfcDistributionPort Name, PredefinedType, and FlowDirection:

DIFFUSER

Air (AIRCONDITIONING, SINK): Supply air, typically connected from a duct segment or fitting.

GRILLE

Air (VENTILATION, SOURCE): Return air, typically connected to a duct segment or fitting.

REGISTER

Air (AIRCONDITIONING, SINK): Supply air, typically connected from a duct segment or fitting.

Figure 211 illustrates air terminal port use. Figure 211 — Air terminal port use

Public Types

typedef IfcTemplatedEntityList<IfcAirTerminal> list

Public Functions

bool hasPredefinedType() const

Whether the optional attribute PredefinedType is defined for this IfcAirTerminal.

::Ifc4::IfcAirTerminalTypeEnum::Value PredefinedType() const
void setPredefinedType(::Ifc4::IfcAirTerminalTypeEnum::Value v)
const IfcParse::entity &declaration() const
IfcAirTerminal(IfcEntityInstanceData *e)
IfcAirTerminal(std::string v1_GlobalId, ::Ifc4::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag, boost::optional<::Ifc4::IfcAirTerminalTypeEnum::Value> v9_PredefinedType)

Public Static Functions

const IfcParse::entity &Class()