7.5.3.65 IfcVibrationIsolator

Isolation anti-vibratoire
Schwingungsisolator

A vibration isolator is a device used to minimize the effects of vibration transmissibility in a building.

HISTORY  New entity in IFC4

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 595.
Type
IfcVibrationIsolatorType

Table 595 — IfcVibrationIsolator Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 596.
PredefinedTypeName
 Pset_VibrationIsolatorTypeCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 596 — IfcVibrationIsolator Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 597.
Name
Qto_VibrationIsolatorBaseQuantities

Table 597 — IfcVibrationIsolator Quantity Sets



Material Constituents

The Material Constituents concept applies to this entity as shown in Table 598.
NameDescription
CasingMaterial from which the casing is constructed.
DampingMaterial from which the damping element of the vibration isolator is constructed.

Table 598 — IfcVibrationIsolator Material Constituents




XSD Specification:

 <xs:element name="IfcVibrationIsolator" type="ifc:IfcVibrationIsolator" substitutionGroup="ifc:IfcElementComponent" nillable="true"/>
 <xs:complexType name="IfcVibrationIsolator">
  <xs:complexContent>
   <xs:extension base="ifc:IfcElementComponent">
    <xs:attribute name="PredefinedType" type="ifc:IfcVibrationIsolatorTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcVibrationIsolator
SUBTYPE OF IfcElementComponent;
PredefinedType : OPTIONAL IfcVibrationIsolatorTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcVibrationIsolatorTypeEnum.USERDEFINED) OR ((PredefinedType = IfcVibrationIsolatorTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCVIBRATIONISOLATORTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcVibrationIsolatorType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no vibration isolator type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcVibrationIsolatorType.

Inheritance Graph:

ENTITY IfcVibrationIsolator
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcLabel;
INVERSE
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
INVERSE
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
IsConnectionRealization : SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;
ProvidesBoundaries : SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom : SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
ENTITY IfcElementComponent
ENTITY IfcVibrationIsolator
PredefinedType : OPTIONAL IfcVibrationIsolatorTypeEnum;
END_ENTITY;

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