IFC 4.3.2.20250219 (IFC4X3_ADD2) under development

6.1.3.36 IfcSlabType

6.1.3.36.1 Semantic definition

The element type IfcSlabType defines commonly shared information for occurrences of slabs. The set of shared information may include:

  • common properties within shared property sets
  • common material information
  • common material layer definitions
  • common shape representations

It is used to define a slab specification (i.e. the specific product information, that is common to all occurrences of that product type). Slab types may be exchanged without being already assigned to occurrences.

The occurrences of the IfcSlabType within building models are represented by instances of IfcSlab.

Informal Propositions

  1. The material assignment, if provided using the IfcRelAssociatesMaterial relationship, shall not reference the IfcMaterialLayerSetUsage. Use IfcMaterialLayerSet instead.

6.1.3.36.2 Entity inheritance

6.1.3.36.3 Attributes

# Attribute Type Description
IfcRoot (4)
IfcObjectDefinition (7)
IfcTypeObject (3)
IfcTypeProduct (3)
IfcElementType (1)
Click to show 18 hidden inherited attributes
IfcSlabType (1)
10 PredefinedType IfcSlabTypeEnum

Identifies the predefined types of a slab element from which the type required may be set.

Table 6.1.3.36.E

6.1.3.36.4 Formal propositions

Name Description
CorrectPredefinedType

The inherited attribute ElementType shall be provided, if the PredefinedType is set to USERDEFINED.

(PredefinedType <> IfcSlabTypeEnum.USERDEFINED) OR
((PredefinedType = IfcSlabTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcElementType.ElementType))
Table 6.1.3.36.F

6.1.3.36.5 Property sets

  • Pset_CessBetweenRails TRACKSLAB
    • JointRelativePosition
    • CheckRailType
    • LoadCapacity
    • UsagePurpose
  • Pset_ConcreteElementGeneral
    • AssemblyPlace
    • CastingMethod
    • StructuralClass
    • StrengthClass
    • ExposureClass
    • ReinforcementVolumeRatio
    • ReinforcementAreaRatio
    • DimensionalAccuracyClass
    • ConstructionToleranceClass
    • ConcreteCover
    • ConcreteCoverAtMainBars
    • ConcreteCoverAtLinks
    • ReinforcementStrengthClass
  • Pset_Condition
    • AssessmentDate
    • AssessmentCondition
    • AssessmentDescription
    • AssessmentType
    • AssessmentMethod
    • LastAssessmentReport
    • NextAssessmentDate
    • AssessmentFrequency
  • Pset_ConstructionAdministration
    • ProcurementMethod
    • SpecificationSectionNumber
    • SubmittalIdentifer
  • Pset_ElementKinematics
    • CyclicPath
    • CyclicRange
    • LinearPath
    • LinearRange
    • MaximumAngularVelocity
    • MaximumConstantSpeed
    • MinimumTime
  • Pset_EmbeddedTrack TRACKSLAB
    • IsAccessibleByVehicle
    • HasDrainage
    • PermissibleRoadLoad
  • Pset_EnvironmentalCondition
    • ReferenceAirRelativeHumidity
    • ReferenceEnvironmentTemperature
    • MaximumAtmosphericPressure
    • StorageTemperatureRange
    • MaximumWindSpeed
    • OperationalTemperatureRange
    • MaximumRainIntensity
    • SaltMistLevel
    • SeismicResistance
    • SmokeLevel
    • MaximumSolarRadiation
  • 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_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_ManufacturerTypeInformation
    • GlobalTradeItemNumber
    • ArticleNumber
    • ModelReference
    • ModelLabel
    • Manufacturer
    • ProductionYear
    • AssemblyPlace
    • OperationalDocument
    • SafetyDocument
    • PerformanceCertificate
  • Pset_PrecastConcreteElementFabrication
    • TypeDesignation
    • ProductionLotId
    • SerialNumber
    • PieceMark
    • AsBuiltLocationNumber
    • ActualProductionDate
    • ActualErectionDate
  • Pset_PrecastConcreteElementGeneral
    • TypeDesignation
    • CornerChamfer
    • ManufacturingToleranceClass
    • FormStrippingStrength
    • LiftingStrength
    • ReleaseStrength
    • MinimumAllowableSupportLength
    • InitialTension
    • TendonRelaxation
    • TransportationStrength
    • SupportDuringTransportDescription
    • SupportDuringTransportDocReference
    • HollowCorePlugging
    • CamberAtMidspan
    • BatterAtStart
    • BatterAtEnd
    • Twisting
    • Shortening
    • PieceMark
    • DesignLocationNumber
  • Pset_PrecastSlab
    • TypeDesignation
    • ToppingType
    • EdgeDistanceToFirstAxis
    • DistanceBetweenComponentAxes
    • AngleToFirstAxis
    • AngleBetweenComponentAxes
    • NominalThickness
    • NominalToppingThickness
  • Pset_ReinforcementBarPitchOfSlab
    • Description
    • Reference
    • LongOutsideTopBarPitch
    • LongInsideCenterTopBarPitch
    • LongInsideEndTopBarPitch
    • ShortOutsideTopBarPitch
    • ShortInsideCenterTopBarPitch
    • ShortInsideEndTopBarPitch
    • LongOutsideLowerBarPitch
    • LongInsideCenterLowerBarPitch
    • LongInsideEndLowerBarPitch
    • ShortOutsideLowerBarPitch
    • ShortInsideCenterLowerBarPitch
    • ShortInsideEndLowerBarPitch
  • Pset_Risk
    • RiskName
    • RiskType
    • NatureOfRisk
    • RiskAssessmentMethodology
    • UnmitigatedRiskLikelihood
    • UnmitigatedRiskConsequence
    • UnmitigatedRiskSignificance
    • MitigationPlanned
    • MitigatedRiskLikelihood
    • MitigatedRiskConsequence
    • MitigatedRiskSignificance
    • MitigationProposed
    • AssociatedProduct
    • AssociatedActivity
    • AssociatedLocation
  • Pset_ServiceLife
    • ServiceLifeDuration
    • MeanTimeBetweenFailure
  • Pset_SlabCommon
    • Reference
    • Status
    • AcousticRating
    • FireRating
    • PitchAngle
    • Combustible
    • SurfaceSpreadOfFlame
    • Compartmentation
    • IsExternal
    • ThermalTransmittance
    • LoadBearing
  • Pset_SlabTypeTrackSlab TRACKSLAB
    • TechnicalStandard
  • Pset_Tolerance
    • ToleranceDescription
    • ToleranceBasis
    • OverallTolerance
    • HorizontalTolerance
    • OrthogonalTolerance
    • VerticalTolerance
    • PlanarFlatness
    • HorizontalFlatness
    • ElevationalFlatness
    • SideFlatness
    • OverallOrthogonality
    • HorizontalOrthogonality
    • OrthogonalOrthogonality
    • VerticalOrthogonality
    • OverallStraightness
    • HorizontalStraightness
    • OrthogonalStraightness
    • VerticalStraightness
  • Pset_TrackBase BASESLAB
    • IsSurfaceGalling
    • SurfaceGallingArea
  • Pset_Uncertainty
    • UncertaintyBasis
    • UncertaintyDescription
    • HorizontalUncertainty
    • LinearUncertainty
    • OrthogonalUncertainty
    • VerticalUncertainty
  • Pset_Warranty
    • WarrantyIdentifier
    • WarrantyStartDate
    • IsExtendedWarranty
    • WarrantyPeriod
    • WarrantyContent
    • PointOfContact
    • Exclusions
  • Qto_SlabBaseQuantities
    • Width
    • Length
    • Depth
    • Perimeter
    • GrossArea
    • NetArea
    • GrossVolume
    • NetVolume
    • GrossWeight
    • NetWeight

6.1.3.36.6 Concept usage

Concept Usage Description
IfcRoot (2)
IfcObjectDefinition (9)
IfcTypeObject (2)
IfcTypeProduct (7)
IfcElementType (5)
Click to show 25 hidden inherited concepts
IfcSlabType (2)
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:

Table 6.1.3.36.G

6.1.3.36.7 Examples

6.1.3.36.8 Formal representation

ENTITY IfcSlabType
SUBTYPE OF (IfcBuiltElementType);
PredefinedType : IfcSlabTypeEnum;
WHERE
CorrectPredefinedType : (PredefinedType <> IfcSlabTypeEnum.USERDEFINED) OR
((PredefinedType = IfcSlabTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcElementType.ElementType));
END_ENTITY;

6.1.3.36.9 References

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6.1.3.36.10 Changelog

6.1.3.36.10.1 IFC4

  • where rule, CorrectPredefinedType

6.1.3.36.10.2 IFC4.3_DEV_738df036