IFC 4.3.2.20250327 (IFC4X3_ADD2) under development

7.5.3.29 IfcDuctSilencer

7.5.3.29.1 Semantic definition

A duct silencer is a device that is typically installed inside a duct distribution system for the purpose of reducing the noise levels from air movement, fan noise, etc. in the adjacent space or downstream of the duct silencer device.

7.5.3.29.2 Entity inheritance

7.5.3.29.3 Attributes

# Attribute Type Description
IfcRoot (4)
IfcObjectDefinition (7)
IfcObject (5)
IfcProduct (5)
IfcElement (13)
IfcDistributionElement (1)
IfcDistributionFlowElement (1)
Click to show 36 hidden inherited attributes
IfcDuctSilencer (1)
9 PredefinedType OPTIONAL IfcDuctSilencerTypeEnum

A list of types to further identify the object. Some property sets may be specifically applicable to one of these types.

Table 7.5.3.29.D

7.5.3.29.4 Formal propositions

Name Description
CorrectPredefinedType

Either the PredefinedType attribute is unset (e.g. because an IfcDuctSilencerType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.

NOT(EXISTS(PredefinedType)) OR
(PredefinedType <> IfcDuctSilencerTypeEnum.USERDEFINED) OR
((PredefinedType = IfcDuctSilencerTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType))
CorrectTypeAssigned

Either there is no duct silencer type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcDuctSilencerType.

(SIZEOF(IsTypedBy) = 0) OR
('IFC4X3_DEV_738df036.IFCDUCTSILENCERTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType))
Table 7.5.3.29.E

7.5.3.29.5 Property sets

  • Pset_Condition
    • AssessmentDate
    • AssessmentCondition
    • AssessmentDescription
    • AssessmentType
    • AssessmentMethod
    • LastAssessmentReport
    • NextAssessmentDate
    • AssessmentFrequency
  • Pset_ConstructionAdministration
    • ProcurementMethod
    • SpecificationSectionNumber
    • SubmittalIdentifer
  • Pset_ConstructionOccurence
    • InstallationDate
    • ModelNumber
    • TagNumber
    • AssetIdentifier
  • Pset_DuctSilencerPHistory
    • AirFlowRate
    • AirPressureDropCurve
  • Pset_DuctSilencerTypeCommon
    • Reference
    • Status
    • HydraulicDiameter
    • Length
    • Weight
    • AirFlowRateRange
    • WorkingPressureRange
    • TemperatureRange
    • HasExteriorInsulation
  • Pset_ElectricalDeviceCommon
    • RatedCurrent
    • RatedVoltage
    • NominalFrequencyRange
    • PowerFactor
    • ConductorFunction
    • NumberOfPoles
    • HasProtectiveEarth
    • InsulationStandardClass
    • IP_Code
    • IK_Code
    • EarthingStyle
    • HeatDissipation
    • Power
    • NominalPowerConsumption
    • NumberOfPowerSupplyPorts
  • Pset_ElectricalDeviceCompliance
    • ElectroMagneticStandardsCompliance
    • ExplosiveAtmosphereStandardsCompliance
    • FireProofingStandardsCompliance
    • LightningProtectionStandardsCompliance
  • Pset_ElementKinematics
    • CyclicPath
    • CyclicRange
    • LinearPath
    • LinearRange
    • MaximumAngularVelocity
    • MaximumConstantSpeed
    • MinimumTime
  • Pset_ElementSize
    • NominalLength
    • NominalWidth
    • NominalHeight
  • Pset_EnergyRequirements
    • EnergyConsumption
    • PowerDemand
    • EnergySourceLabel
    • EnergyConversionEfficiency
  • Pset_EnvironmentalCondition
    • ReferenceAirRelativeHumidity
    • ReferenceEnvironmentTemperature
    • MaximumAtmosphericPressure
    • StorageTemperatureRange
    • MaximumWindSpeed
    • OperationalTemperatureRange
    • MaximumRainIntensity
    • SaltMistLevel
    • SeismicResistance
    • SmokeLevel
    • MaximumSolarRadiation
  • Pset_EnvironmentalEmissions
    • CarbonDioxideEmissions
    • SulphurDioxideEmissions
    • NitrogenOxidesEmissions
    • ParticulateMatterEmissions
    • NoiseEmissions
  • Pset_EnvironmentalImpactIndicators
    • Reference
    • FunctionalUnitReference
    • IndicatorsUnit
    • LifeCyclePhase
    • ExpectedServiceLife
    • TotalPrimaryEnergyConsumptionPerUnit
    • WaterConsumptionPerUnit
    • HazardousWastePerUnit
    • NonHazardousWastePerUnit
    • ClimateChangePerUnit
    • AtmosphericAcidificationPerUnit
    • RenewableEnergyConsumptionPerUnit
    • NonRenewableEnergyConsumptionPerUnit
    • ResourceDepletionPerUnit
    • InertWastePerUnit
    • RadioactiveWastePerUnit
    • StratosphericOzoneLayerDestructionPerUnit
    • PhotochemicalOzoneFormationPerUnit
    • EutrophicationPerUnit
  • Pset_EnvironmentalImpactValues
    • TotalPrimaryEnergyConsumption
    • WaterConsumption
    • HazardousWaste
    • NonHazardousWaste
    • ClimateChange
    • AtmosphericAcidification
    • RenewableEnergyConsumption
    • NonRenewableEnergyConsumption
    • ResourceDepletion
    • InertWaste
    • RadioactiveWaste
    • StratosphericOzoneLayerDestruction
    • PhotochemicalOzoneFormation
    • Eutrophication
    • LeadInTime
    • Duration
    • LeadOutTime
  • Pset_InstallationOccurrence
    • InstallationDate
    • AcceptanceDate
    • PutIntoOperationDate
  • Pset_MaintenanceStrategy
    • AssetCriticality
    • AssetFrailty
    • AssetPriority
    • MonitoringType
    • AccidentResponse
  • Pset_MaintenanceTriggerCondition
    • ConditionTargetPerformance
    • ConditionMaintenanceLevel
    • ConditionReplacementLevel
    • ConditionDisposalLevel
  • Pset_MaintenanceTriggerDuration
    • DurationTargetPerformance
    • DurationMaintenanceLevel
    • DurationReplacementLevel
    • DurationDisposalLevel
  • Pset_MaintenanceTriggerPerformance
    • TargetPerformance
    • PerformanceMaintenanceLevel
    • ReplacementLevel
    • DisposalLevel
  • Pset_ManufacturerOccurrence
    • AcquisitionDate
    • BarCode
    • SerialNumber
    • BatchReference
    • AssemblyPlace
    • ManufacturingDate
  • Pset_ManufacturerTypeInformation
    • GlobalTradeItemNumber
    • ArticleNumber
    • ModelReference
    • ModelLabel
    • Manufacturer
    • ProductionYear
    • AssemblyPlace
    • OperationalDocument
    • SafetyDocument
    • PerformanceCertificate
  • Pset_RepairOccurrence
    • RepairContent
    • RepairDate
    • MeanTimeToRepair
  • Pset_Risk
    • RiskName
    • RiskType
    • NatureOfRisk
    • RiskAssessmentMethodology
    • UnmitigatedRiskLikelihood
    • UnmitigatedRiskConsequence
    • UnmitigatedRiskSignificance
    • MitigationPlanned
    • MitigatedRiskLikelihood
    • MitigatedRiskConsequence
    • MitigatedRiskSignificance
    • MitigationProposed
    • AssociatedProduct
    • AssociatedActivity
    • AssociatedLocation
  • Pset_ServiceLife
    • ServiceLifeDuration
    • MeanTimeBetweenFailure
  • Pset_SoundGeneration
    • SoundCurve
  • Pset_Tolerance
    • ToleranceDescription
    • ToleranceBasis
    • OverallTolerance
    • HorizontalTolerance
    • OrthogonalTolerance
    • VerticalTolerance
    • PlanarFlatness
    • HorizontalFlatness
    • ElevationalFlatness
    • SideFlatness
    • OverallOrthogonality
    • HorizontalOrthogonality
    • OrthogonalOrthogonality
    • VerticalOrthogonality
    • OverallStraightness
    • HorizontalStraightness
    • OrthogonalStraightness
    • VerticalStraightness
  • Pset_Uncertainty
    • UncertaintyBasis
    • UncertaintyDescription
    • HorizontalUncertainty
    • LinearUncertainty
    • OrthogonalUncertainty
    • VerticalUncertainty
  • Pset_Warranty
    • WarrantyIdentifier
    • WarrantyStartDate
    • IsExtendedWarranty
    • WarrantyPeriod
    • WarrantyContent
    • PointOfContact
    • Exclusions
  • Qto_BodyGeometryValidation
    • GrossSurfaceArea
    • NetSurfaceArea
    • GrossVolume
    • NetVolume
    • SurfaceGenusBeforeFeatures
    • SurfaceGenusAfterFeatures
  • Qto_DuctSilencerBaseQuantities
    • GrossWeight

7.5.3.29.6 Concept usage

Concept Usage Description
IfcRoot (2)
IfcObjectDefinition (9)
IfcObject (5)
IfcProduct (18)
IfcElement (44)
IfcDistributionElement (4)
IfcDistributionFlowElement (4)
IfcFlowTreatmentDevice (2)
Click to show 88 hidden inherited concepts
IfcDuctSilencer (7)
Material Set General

This concept can be applied to the following resources:

  • Casing - Material from which the casing is constructed.
Object Typing General

This concept can be applied to the following resources:

Port Nesting General

This concept can be applied with the following combinations:

PortName Flow PredefinedType Description
Inlet SINK AIRCONDITIONING No description available.
Outlet SOURCE AIRCONDITIONING No description available.
Table 7.5.3.29.G
Property Sets for Objects General

This concept can be applied to the following resources:

Quantity Sets General

This concept can be applied to the following resources:

Material Constituent Set General

No description available.

Property Sets for Performance General

This concept can be applied to the following resources:

Table 7.5.3.29.F

7.5.3.29.7 Formal representation

ENTITY IfcDuctSilencer
SUBTYPE OF (IfcFlowTreatmentDevice);
PredefinedType : OPTIONAL IfcDuctSilencerTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR
(PredefinedType <> IfcDuctSilencerTypeEnum.USERDEFINED) OR
((PredefinedType = IfcDuctSilencerTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR
('IFC4X3_DEV_738df036.IFCDUCTSILENCERTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

7.5.3.29.8 References

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7.5.3.29.9 Changelog

7.5.3.29.9.1 IFC4

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