5.4.3.23 IfcExternalSpatialElement
5.4.3.23.1 Semantic definition
The external spatial element defines external regions at the building site. Those regions can be defined:
- logically - for example, an instance of IfcExternalSpatialElement could represent the air space around the building without having an own shape representation, or
- physically - for example, an instance of IfcExternalSpatialElement could represent the sloping ground around the building to identify the part of the external building envelop that is below ground.
5.4.3.23.2 Entity inheritance
5.4.3.23.3 Attributes
# | Attribute | Type | Description |
---|---|---|---|
IfcRoot (4) | |||
IfcObjectDefinition (7) | |||
IfcObject (5) | |||
IfcProduct (5) | |||
IfcSpatialElement (6) | |||
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IfcExternalSpatialElement (2) | |||
9 | PredefinedType | OPTIONAL IfcExternalSpatialElementTypeEnum |
Predefined generic types for an external spatial element that are specified in an enumeration. There might be property sets defined specifically for each predefined type. |
BoundedBy | SET [0:?] OF IfcRelSpaceBoundary FOR RelatingSpace |
Reference to a set of IfcRelSpaceBoundary entities that defines the physical or virtual delimitation of that external spatial element against physical or virtual boundaries. |
5.4.3.23.4 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
5.4.3.23.5 Concept usage
Concept | Usage | Description | |
---|---|---|---|
IfcRoot (2) | |||
IfcObjectDefinition (9) | |||
IfcObject (5) | |||
IfcProduct (18) | |||
IfcSpatialElement (11) | |||
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IfcExternalSpatialElement (2) | |||
Spatial Composition | General |
This concept can be applied to the following resources: |
|
Spatial Decomposition | General |
This concept can be applied to the following resources: |
5.4.3.23.6 Formal representation
ENTITY IfcExternalSpatialElement SUBTYPE OF (IfcExternalSpatialStructureElement); PredefinedType : OPTIONAL IfcExternalSpatialElementTypeEnum; INVERSE BoundedBy : SET [0:?] OF IfcRelSpaceBoundary FOR RelatingSpace; END_ENTITY;