IfcDamperType

Definition from IAI: The element type IfcDamperType defines a list of commonly shared property set definitions of a damper and an optional set of product representations. It is used to define a damper 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 damper type is used to define the common properties of a damper that may be applied to many occurrences of that type. A damper typically participates in an HVAC duct distribution system and is used to control or modulate the flow of air. Damper types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcDamperType 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_DamperTypeCommon: common property set for all damper types
  - Pset_DamperTypeControlDamper: property set for all control damper types
  - Pset_DamperTypeFireDamper: property set for all fire damper types
  - Pset_DamperTypeFireSmokeDamper: property set for all combination fire and smoke damper types
  - Pset_DamperTypeSmokeDamper: property set for all smoke damper types

> HISTORY: New entity in IFC Release 2x2.

EXPRESS specification:

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

Attribute definitions:

PredefinedType | : | Type of damper.

Inheritance graph

ENTITY IfcDamperType;
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 IfcDamperType;
PredefinedType | : | IfcDamperTypeEnum;
END_ENTITY;