IfcAirTerminalBoxType

Definition from IAI: The element type IfcAirTerminalBoxType defines a list of commonly shared property set definitions of an air termainal box and an optional set of product representations. It is used to define an air terminal box 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.

An air terminal box type is used to define the common properties of an air terminal box that may be applied to many occurrences of that type. An air terminal box typically participates in an HVAC duct distribution system and is used to control or modulate the amount of air delivered to its downstream ductwork. Air terminal box types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcAirTerminalBoxType are represented by instances of IfcFlowController 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_AirTerminalBoxTypeCommon: common property set for all air terminal box types

> HISTORY: New entity in IFC Release 2x2.

EXPRESS specification:

ENTITY IfcAirTerminalBoxType
SUBTYPE OF ( | IfcFlowControllerType);
PredefinedType | : | IfcAirTerminalBoxTypeEnum;
WHERE
WR1 | : | (PredefinedType <> IfcAirTerminalBoxTypeEnum.USERDEFINED) OR ((PredefinedType = IfcAirTerminalBoxTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));
END_ENTITY;

Attribute definitions:

PredefinedType | : | The air terminal box type.

Inheritance graph

ENTITY IfcAirTerminalBoxType;
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 IfcFlowControllerType;
ENTITY IfcAirTerminalBoxType;
PredefinedType | : | IfcAirTerminalBoxTypeEnum;
END_ENTITY;