IFC 4.3.2.20250327 (IFC4X3_ADD2) under development

5.4.3.66 IfcSpatialElement

ABSTRACT This definition may not be instantiated

5.4.3.66.1 Semantic definition

A spatial element is the generalization of all spatial elements that might be used to define a spatial structure or to define spatial zones.

  • a hierarchical spatial structure element as IfcSpatialStructureElement
  • a spatial structure is a hierarchical decomposition of the project. That spatial structure is often used to provide a project structure to organize a project.
  • a spatial project structure might define as many levels of decomposition as necessary for the project. Some examples of elements within the spatial breakdown can be: site, building, storey, space. And for infrastructure projects also: bridge, railway, road, ports, tunnel and parts of them.
  • a spatial zone as IfcSpatialZone
  • a spatial zone is a non-hierarchical and potentially overlapping decomposition of the project under some functional consideration.
  • a spatial zone might be used to represent a thermal zone, a lighting zone, a usable area zone.
  • a spatial zone might be used to represent a horizontal spatial structure as used in civil works.
  • a spatial zone might have its independent placement and shape representation.

5.4.3.66.2 Entity inheritance

5.4.3.66.3 Attributes

# Attribute Type Description
IfcRoot (4)
IfcObjectDefinition (7)
IfcObject (5)
IfcProduct (5)
Click to show 21 hidden inherited attributes
IfcSpatialElement (6)
8 LongName OPTIONAL IfcLabel

Long name for a spatial structure element, used for informal purposes. It should be used, if available, in conjunction with the inherited Name attribute.

ContainsElements SET [0:?] OF IfcRelContainedInSpatialStructure FOR RelatingStructure

Set of spatial containment relationships, that holds those elements, which are contained within this element of the project spatial structure.

ServicedBySystems SET [0:?] OF IfcRelServicesBuildings FOR RelatedBuildings

Set of relationships to systems, that provides a certain service to the spatial element for which it is defined. The relationship is handled by the objectified relationship IfcRelServicesBuildings.

ReferencesElements SET [0:?] OF IfcRelReferencedInSpatialStructure FOR RelatingStructure

Set of spatial reference relationships, that holds those elements, which are referenced, but not contained, within this element of the project spatial structure.

IsInterferedByElements SET [0:?] OF IfcRelInterferesElements FOR RelatedElement

Reference to the interference relationship to indicate the spatial element that is interfered. The relationship, if provided, indicates that this spatial element has an interference with one or many other spatial elements.

InterferesElements SET [0:?] OF IfcRelInterferesElements FOR RelatingElement

Reference to the interference relationship to indicate the spatial element that interferes. The relationship, if provided, indicates that this spatial element has an interference with one or many other spatial elements.

Table 5.4.3.66.A

5.4.3.66.4 Property sets

  • Pset_AirSideSystemInformation
    • Description
    • AirSideSystemType
    • AirSideSystemDistributionType
    • TotalAirFlow
    • EnergyGainTotal
    • AirFlowSensible
    • EnergyGainSensible
    • EnergyLoss
    • InfiltrationDiversitySummer
    • InfiltrationDiversityWinter
    • ApplianceDiversity
    • HeatingTemperatureDelta
    • CoolingTemperatureDelta
    • Ventilation
    • FanPower
  • Pset_Risk
    • RiskName
    • RiskType
    • NatureOfRisk
    • RiskAssessmentMethodology
    • UnmitigatedRiskLikelihood
    • UnmitigatedRiskConsequence
    • UnmitigatedRiskSignificance
    • MitigationPlanned
    • MitigatedRiskLikelihood
    • MitigatedRiskConsequence
    • MitigatedRiskSignificance
    • MitigationProposed
    • AssociatedProduct
    • AssociatedActivity
    • AssociatedLocation
  • Pset_SpaceAirHandlingDimensioning
    • CoolingDesignAirFlow
    • HeatingDesignAirFlow
    • SensibleHeatGain
    • TotalHeatGain
    • TotalHeatLoss
    • CoolingDryBulb
    • CoolingRelativeHumidity
    • HeatingDryBulb
    • HeatingRelativeHumidity
    • VentilationDesignAirFlow
    • DesignAirFlow
    • CeilingRAPlenum
    • BoundaryAreaHeatLoss
  • Pset_SpaceCommon
    • Reference
    • IsExternal
    • GrossPlannedArea
    • NetPlannedArea
    • PubliclyAccessible
    • HandicapAccessible
  • Pset_SpaceCoveringRequirements
    • FloorCovering
    • FloorCoveringThickness
    • WallCovering
    • WallCoveringThickness
    • CeilingCovering
    • CeilingCoveringThickness
    • SkirtingBoard
    • SkirtingBoardHeight
    • Molding
    • MoldingHeight
    • ConcealedFlooring
    • ConcealedFlooringOffset
    • ConcealedCeiling
    • ConcealedCeilingOffset
  • Pset_SpaceFireSafetyRequirements
    • FireRiskFactor
    • FlammableStorage
    • FireExit
    • SprinklerProtection
    • SprinklerProtectionAutomatic
    • AirPressurization
  • Pset_SpaceHVACDesign
    • TemperatureSetPoint
    • TemperatureMax
    • TemperatureMin
    • TemperatureSummerMax
    • TemperatureSummerMin
    • TemperatureWinterMax
    • TemperatureWinterMin
    • HumiditySetPoint
    • HumidityMax
    • HumidityMin
    • HumiditySummer
    • HumidityWinter
    • DiscontinuedHeating
    • NaturalVentilation
    • NaturalVentilationRate
    • MechanicalVentilation
    • MechanicalVentilationRate
    • AirConditioning
    • AirConditioningCentral
    • AirHandlingName
  • Pset_SpaceLightingDesign
    • ArtificialLighting
    • Illuminance
  • Pset_SpaceOccupancyRequirements
    • OccupancyType
    • OccupancyNumber
    • OccupancyNumberPeak
    • OccupancyTimePerDay
    • AreaPerOccupant
    • MinimumHeadroom
    • IsOutlookDesirable
  • Pset_SpaceThermalLoad
    • People
    • Lighting
    • EquipmentSensible
    • VentilationIndoorAir
    • VentilationOutdoorAir
    • RecirculatedAir
    • ExhaustAir
    • AirExchangeRate
    • DryBulbTemperature
    • RelativeHumidity
    • InfiltrationSensible
    • TotalSensibleLoad
    • TotalLatentLoad
    • TotalRadiantLoad
  • Pset_SpaceThermalLoadPHistory
    • PeopleHistory
    • LightingHistory
    • EquipmentSensibleHistory
    • VentilationIndoorAirHistory
    • VentilationOutdoorAirHistory
    • RecirculatedAirHistory
    • ExhaustAirHistory
    • AirExchangeRateTimeHistory
    • DryBulbTemperatureHistory
    • RelativeHumidityHistory
    • InfiltrationSensibleHistory
    • TotalSensibleLoadHistory
    • TotalLatentLoadHistory
    • TotalRadiantLoadHistory
  • Pset_SpaceThermalPHistory
    • CoolingAirFlowRate
    • HeatingAirFlowRate
    • VentilationAirFlowRateHistory
    • ExhaustAirFlowRate
    • SpaceTemperatureHistory
    • SpaceRelativeHumidity
  • Pset_ThermalLoad
    • OccupancyDiversity
    • LightingDiversity
    • ApplianceDiversity
    • OutsideAirPerPerson
    • ReceptacleLoadIntensity
    • AppliancePercentLoadToRadiant
    • LightingLoadIntensity
    • LightingPercentLoadToReturnAir
    • TotalCoolingLoad
    • TotalHeatingLoad
    • InfiltrationDiversitySummer
    • InfiltrationDiversityWinter
    • LoadSafetyFactor
  • 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
  • Qto_BodyGeometryValidation
    • GrossSurfaceArea
    • NetSurfaceArea
    • GrossVolume
    • NetVolume
    • SurfaceGenusBeforeFeatures
    • SurfaceGenusAfterFeatures

5.4.3.66.5 Concept usage

Concept Usage Description
IfcRoot (2)
IfcObjectDefinition (9)
IfcObject (5)
IfcProduct (18)
Click to show 34 hidden inherited concepts
IfcSpatialElement (11)
Body Geometry General

A spatial element will not usually provide a body geometry, instead relying on its constituting elements. A body geometry may be provided if it is necessary to expose an independent geometric representation. This geometry is typically expressed by its exterior elements or volume boundary.

FootPrint GeomSet Geometry General

No description available.

Group Spatial Connectivity General

No description available.

Property Sets for Objects General

This concept can be applied to the following resources:

Spatial Interference General

No description available.

Spatial Interference With Zones General

No description available.

Object Typing General

This concept can be applied to the following resources:

Property Sets for Performance General

This concept can be applied to the following resources:

Spatial Container General

This concept can be applied to the following resources:

Spatial Element Attributes General

No description available.

Spatial Service Connectivity General

No description available.

Table 5.4.3.66.B

5.4.3.66.6 Formal representation

ENTITY IfcSpatialElement
ABSTRACT SUPERTYPE OF (ONEOF
(IfcExternalSpatialStructureElement
,IfcSpatialStructureElement
,IfcSpatialZone))
SUBTYPE OF (IfcProduct);
LongName : OPTIONAL IfcLabel;
INVERSE
ContainsElements : SET [0:?] OF IfcRelContainedInSpatialStructure FOR RelatingStructure;
ServicedBySystems : SET [0:?] OF IfcRelServicesBuildings FOR RelatedBuildings;
ReferencesElements : SET [0:?] OF IfcRelReferencedInSpatialStructure FOR RelatingStructure;
IsInterferedByElements : SET [0:?] OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET [0:?] OF IfcRelInterferesElements FOR RelatingElement;
END_ENTITY;

5.4.3.66.7 References

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5.4.3.66.8 Changelog

5.4.3.66.8.1 IFC4

  • New resource

5.4.3.66.8.2 IFC4.3_DEV_738df036

  • inverse attribute, InterferesElements
  • inverse attribute, IsInterferedByElements