IfcVibrationIsolatorType

Definition from IAI: The element type IfcVibrationIsolatorType 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 vibration isolator type is used to define the common properties of an isolator that may be applied to many occurrences of that type. A vibration isolator is a device used to minimize the effects of vibration transmissibility in a building. Isolator types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcVibrationIsolatorType are represented by instances of IfcEquipmentElement 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_VibrationIsolatorTypeCommon: common property set for all vibration isolator types

HISTORY: New entity in IFC Release 2x2.

EXPRESS specification:

ENTITY IfcVibrationIsolatorType

SUBTYPE OF (

IfcDiscreteAccessoryType);

PredefinedType

IfcVibrationIsolatorTypeEnum;

WHERE

WR1

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

END_ENTITY;

Attribute definitions:

PredefinedType

Defines the type of vibration isolator.

Inheritance graph

ENTITY IfcVibrationIsolatorType;

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 IfcElementComponentType;

ENTITY IfcDiscreteAccessoryType;

ENTITY IfcVibrationIsolatorType;

PredefinedType

IfcVibrationIsolatorTypeEnum;

END_ENTITY;