IFC 4.3.2.20250327 (IFC4X3_ADD2) under development

7.4.3.33 IfcLightFixture

7.4.3.33.1 Semantic definition

A light fixture is a container that is designed for the purpose of housing one or more lamps and optionally devices that control, restrict or vary their emission.

7.4.3.33.2 Entity inheritance

7.4.3.33.3 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
IfcLightFixture (1)
9 PredefinedType OPTIONAL IfcLightFixtureTypeEnum

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

Table 7.4.3.33.D

7.4.3.33.4 Formal propositions

Name Description
CorrectPredefinedType

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

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

Either there is no light fixture type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcLightFixtureType.

(SIZEOF(IsTypedBy) = 0) OR
('IFC4X3_DEV_738df036.IFCLIGHTFIXTURETYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType))
Table 7.4.3.33.E

7.4.3.33.5 Property sets

  • Pset_Condition
    • AssessmentDate
    • AssessmentCondition
    • AssessmentDescription
    • AssessmentType
    • AssessmentMethod
    • LastAssessmentReport
    • NextAssessmentDate
    • AssessmentFrequency
  • Pset_ConstructionAdministration
    • ProcurementMethod
    • SpecificationSectionNumber
    • SubmittalIdentifer
  • Pset_ConstructionOccurence
    • InstallationDate
    • ModelNumber
    • TagNumber
    • AssetIdentifier
  • Pset_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_LightFixtureTypeCommon
    • Reference
    • Status
    • NumberOfSources
    • TotalWattage
    • LightFixtureMountingType
    • LightFixturePlacingType
    • MaintenanceFactor
    • MaximumPlenumSensibleLoad
    • MaximumSpaceSensibleLoad
    • SensibleLoadToRadiant
  • Pset_LightFixtureTypeSecurityLighting SECURITYLIGHTING
    • SecurityLightingType
    • FixtureHeight
    • SelfTestFunction
    • BackupSupplySystem
    • PictogramEscapeDirection
    • Addressablility
  • 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_LightFixtureBaseQuantities
    • GrossWeight

7.4.3.33.6 Concept usage

Concept Usage Description
IfcRoot (2)
IfcObjectDefinition (9)
IfcObject (5)
IfcProduct (18)
IfcElement (44)
IfcDistributionElement (4)
IfcDistributionFlowElement (4)
IfcFlowTerminal (2)
Click to show 88 hidden inherited concepts
IfcLightFixture (8)
Lighting Geometry General

This represents the light emission of the item having IfcShapeRepresentation.RepresentationType of 'LightSource' and containing one or more IfcLightSource subtypes.

Material Set General

This concept can be applied to the following resources:

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

No description available.

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
Line SINK POINTSOURCE No description available.
Socket SOURCE POINTSOURCE No description available.
Line SINK ELECTRICAL No description available.
Socket#1 SOURCE LIGHTING No description available.
Socket#2 SOURCE DIRECTIONSOURCE No description available.
Socket#3 SOURCE DIRECTIONSOURCE No description available.
Socket#4 SOURCE DIRECTIONSOURCE No description available.
Table 7.4.3.33.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.

Table 7.4.3.33.F

7.4.3.33.7 Formal representation

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

7.4.3.33.8 References

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7.4.3.33.9 Changelog

7.4.3.33.9.1 IFC4

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