IfcSpace

Natural language names
Raum
Space
Local
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4 4.0.0.0
    IfcSpace
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      CompositionTypeMODIFIEDInstantiation changed to OPTIONAL.
      PredefinedTypeMODIFIEDName changed from InteriorOrExteriorSpace to PredefinedType.
Type changed from IfcInternalOrExternalEnum to IfcSpaceTypeEnum.
Instantiation changed to OPTIONAL.
IFC4.2 Candidate 4.2.0.0
    IfcSpace
      PositionedRelativeToADDED
IFC4.2 to IFC4.3 RC1
    IfcSpace
      ReferencedInStructuresADDED
Semantic definitions at the entity
Entity definition

A space represents an area or volume bounded actually or theoretically. Spaces are areas or volumes that provide for certain functions within a building.

A space is associated to a building storey (or in case of exterior spaces to a site). A space may span over several connected spaces. Therefore a space group provides for a collection of spaces included in a storey. A space can also be decomposed in parts, where each part defines a partial space. This is defined by the CompositionType attribute of the supertype IfcSpatialStructureElement which is interpreted as follow:

NOTE  View definitions and implementation agreements may restrict spaces with CompositionType=ELEMENT to be non-overlapping.

The IfcSpace is used to build the spatial structure of a building (that serves as the primary project breakdown and is required to be hierarchical). The spatial structure elements are linked together by using the objectified relationship IfcRelAggregates.

Figure 183 shows the IfcSpace as part of the spatial structure. It also serves as the spatial container for space related elements.

NOTE  Detailed requirements on mandatory element containment and placement structure relationships are given in view definitions and implementer agreements.

"spatial structure"

Figure 183 — Space composition

The following guidelines should apply for using the Name, Description, LongName and ObjectType attributes.

NOTE  In cases of inconsistency between the geometric representation of the IfcSpace and the combined geometric representations of the surrounding IfcRelSpaceBoundary, the geometric representation of the space should take priority over the geometric representation of the surrounding space boundaries.

Figure 184 describes the heights and elevations of the IfcSpace.

"space heights"

Figure 184 — Space elevations

HISTORY  New entity in IFC1.0

Attribute definitions
#AttributeTypeCardinalityDescription G
10PredefinedTypeIfcSpaceTypeEnum? Predefined generic types for a space that are specified in an enumeration. There might be property sets defined specifically for each predefined type.
NOTE  Previous use had been to indicates whether the IfcSpace is an interior space by value INTERNAL, or an exterior space by value EXTERNAL. This use is now deprecated, the property 'IsExternal' at 'Pset_SpaceCommon' should be used instead.
IFC4 CHANGE  The attribute has been renamed from ExteriorOrInteriorSpace with upward compatibility for file based exchange.
X
11ElevationWithFlooringIfcLengthMeasure? Level of flooring of this space; the average shall be taken, if the space ground surface is sloping or if there are level differences within this space. X
HasCoveringsIfcRelCoversSpaces
@RelatingSpace
S[0:?]Reference to IfcCovering by virtue of the objectified relationship IfcRelCoversSpaces. It defines the concept of a space having coverings assigned. Those coverings may represent different flooring, or tiling areas.
NOTE  Coverings are often managed by the space, and not by the building element, which they cover.
IFC2x Edition3 CHANGE  New inverse relationship. Upward compatibility for file based exchange is guaranteed.
X
BoundedByIfcRelSpaceBoundary
@RelatingSpace
S[0:?]Reference to a set of IfcRelSpaceBoundary's that defines the physical or virtual delimitation of that space against physical or virtual boundaries. X
Formal Propositions
RuleDescription
CorrectPredefinedTypeEither the PredefinedType attribute is unset (e.g. because an IfcSpaceType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssignedEither there is no space type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcSpaceType.
Inherited definitions from supertypes
Entity inheritance IfcSpatialStructureElement IfcSpatialElement IfcProduct IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE  only the last modification in stored - either as addition, deletion or modification.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
X
3NameIfcLabel? Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. X
4DescriptionIfcText? Optional description, provided for exchanging informative comments. X
IfcObjectDefinition
HasAssignmentsIfcRelAssigns
@RelatedObjects
S[0:?]Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups. X
NestsIfcRelNests
@RelatedObjects
S[0:1]References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition.
X
IsNestedByIfcRelNests
@RelatingObject
S[0:?]References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition.
X
HasContextIfcRelDeclares
@RelatedDefinitions
S[0:1]References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE  The inverse attribute datatype has been added.
X
IsDecomposedByIfcRelAggregates
@RelatingObject
S[0:?]References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
DecomposesIfcRelAggregates
@RelatedObjects
S[0:1]References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
HasAssociationsIfcRelAssociates
@RelatedObjects
S[0:?]Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification. X
IfcObject
5ObjectTypeIfcLabel? The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED. X
IsDeclaredByIfcRelDefinesByObject
@RelatedObjects
S[0:1]Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
DeclaresIfcRelDefinesByObject
@RelatingObject
S[0:?]Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
IsTypedByIfcRelDefinesByType
@RelatedObjects
S[0:1]Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE  New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange.
X
IsDefinedByIfcRelDefinesByProperties
@RelatedObjects
S[0:?]Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE  The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange.
X
IfcProduct
6ObjectPlacementIfcObjectPlacement? Placement of the product in space, the placement can either be absolute (relative to the world coordinate system), relative (relative to the object placement of another product), or constraint (e.g. relative to grid axes). It is determined by the various subtypes of IfcObjectPlacement, which includes the axis placement information to determine the transformation for the object coordinate system. X
7RepresentationIfcProductRepresentation? Reference to the representations of the product, being either a representation (IfcProductRepresentation) or as a special case a shape representations (IfcProductDefinitionShape). The product definition shape provides for multiple geometric representations of the shape property of the object within the same object coordinate system, defined by the object placement. X
ReferencedByIfcRelAssignsToProduct
@RelatingProduct
S[0:?]Reference to the IfcRelAssignsToProduct relationship, by which other products, processes, controls, resources or actors (as subtypes of IfcObjectDefinition) can be related to this product. X
PositionedRelativeToIfcRelPositions
@RelatedProducts
S[0:1]X
ReferencedInStructuresIfcRelReferencedInSpatialStructure
@RelatedElements
S[0:?]X
IfcSpatialElement
8LongNameIfcLabel? Long name for a spatial structure element, used for informal purposes. It should be used, if available, in conjunction with the inherited Name attribute.
NOTE  In many scenarios the Name attribute refers to the short name or number of a spacial element, and the LongName refers to the full descriptive name.
X
ContainsElementsIfcRelContainedInSpatialStructure
@RelatingStructure
S[0:?]Set of spatial containment relationships, that holds those elements, which are contained within this element of the project spatial structure.
NOTE  The spatial containment relationship, established by IfcRelContainedInSpatialStructure, is required to be an hierarchical relationship, where each element can only be assigned to 0 or 1 spatial structure element.
X
ServicedBySystemsIfcRelServicesBuildings
@RelatedBuildings
S[0:?]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.
IFC4 CHANGE  The inverse attribute has been promoted to the new supertype IfcSpatialElement with upward compatibility for file based exchange.
X
ReferencesElementsIfcRelReferencedInSpatialStructure
@RelatingStructure
S[0:?]Set of spatial reference relationships, that holds those elements, which are referenced, but not contained, within this element of the project spatial structure.
NOTE  The spatial reference relationship, established by IfcRelReferencedInSpatialStructure, is not required to be an hierarchical relationship, i.e. each element can be assigned to 0, 1 or many spatial structure elements.
EXAMPLE  A curtain wall maybe contained in the ground floor, but maybe referenced in all floors, it reaches.
IFC2x3 CHANGE  The inverse attribute has been added with upward compatibility for file based exchange.
Ø\X
X
IfcSpatialStructureElement
9CompositionTypeIfcElementCompositionEnum? Denotes, whether the predefined spatial structure element represents itself, or an aggregate (complex) or a part (part). The interpretation is given separately for each subtype of spatial structure element. If no CompositionType is asserted, the dafault value ''ELEMENT'' applies.\X\0D \X\0D
IFC4 CHANGE  Attribute made optional.
X
IfcSpace
10PredefinedTypeIfcSpaceTypeEnum? Predefined generic types for a space that are specified in an enumeration. There might be property sets defined specifically for each predefined type.
NOTE  Previous use had been to indicates whether the IfcSpace is an interior space by value INTERNAL, or an exterior space by value EXTERNAL. This use is now deprecated, the property 'IsExternal' at 'Pset_SpaceCommon' should be used instead.
IFC4 CHANGE  The attribute has been renamed from ExteriorOrInteriorSpace with upward compatibility for file based exchange.
X
11ElevationWithFlooringIfcLengthMeasure? Level of flooring of this space; the average shall be taken, if the space ground surface is sloping or if there are level differences within this space. X
HasCoveringsIfcRelCoversSpaces
@RelatingSpace
S[0:?]Reference to IfcCovering by virtue of the objectified relationship IfcRelCoversSpaces. It defines the concept of a space having coverings assigned. Those coverings may represent different flooring, or tiling areas.
NOTE  Coverings are often managed by the space, and not by the building element, which they cover.
IFC2x Edition3 CHANGE  New inverse relationship. Upward compatibility for file based exchange is guaranteed.
X
BoundedByIfcRelSpaceBoundary
@RelatingSpace
S[0:?]Reference to a set of IfcRelSpaceBoundary's that defines the physical or virtual delimitation of that space against physical or virtual boundaries. X
Definitions applying to General Usage

 Instance diagram


Concept usage

Spatial Composition

The Spatial Composition concept applies to this entity.

By using the inverse relationship IfcSpace.IsDecomposedBy it references IfcSpace by IfcRelAggregates.RelatedObjects. If it refers to another instance of IfcSpace, the referenced IfcSpace needs to have a different and lower CompositionType, i.e. ELEMENT (if the other IfcSpace has COMPLEX), or PARTIAL (if the other IfcSpace has ELEMENT).



Spatial Decomposition

The Spatial Decomposition concept applies to this entity.

By using the inverse relationship IfcSpace.Decomposes it references IfcSite || IfcBuildingStorey || IfcSpace by IfcRelAggregates.RelatingObject. If it refers to another instance of IfcSpace, the referenced IfcSpace needs to have a different and higher CompositionType, i.e. COMPLEX (if the other IfcSpace has ELEMENT), or ELEMENT (if the other IfcSpace has PARTIAL).



Spatial Container

The Spatial Container concept applies to this entity.

If there are building elements and/or other elements directly related to the IfcSpace (like most furniture and distribution elements), they are associated with the IfcSpace by using the objectified relationship IfcRelContainedInSpatialStructure. The IfcSpace references them by its inverse relationship:



Property Sets for Objects

The Property Sets for Objects concept template applies to this entity as shown in Table 84.

PsetNameProperties
Pset_SpaceCommon
TemplatePropertyNameValue
Single ValueReferenceIfcIdentifier
Single ValueIsExternalIfcBoolean
Single ValueGrossPlannedAreaIfcAreaMeasure
Single ValueNetPlannedAreaIfcAreaMeasure
Single ValuePubliclyAccessibleIfcBoolean
Single ValueHandicapAccessibleIfcBoolean
Pset_SpaceCoveringRequirements
TemplatePropertyNameValue
Single ValueFloorCoveringIfcLabel
Single ValueFloorCoveringThicknessIfcPositiveLengthMeasure
Single ValueWallCoveringIfcLabel
Single ValueWallCoveringThicknessIfcPositiveLengthMeasure
Single ValueCeilingCoveringIfcLabel
Single ValueCeilingCoveringThicknessIfcPositiveLengthMeasure
Single ValueSkirtingBoardIfcLabel
Single ValueSkirtingBoardHeightIfcPositiveLengthMeasure
Single ValueMoldingIfcLabel
Single ValueMoldingHeightIfcPositiveLengthMeasure
Single ValueConcealedFlooringIfcBoolean
Single ValueConcealedCeilingIfcBoolean
Pset_SpaceFireSafetyRequirements
TemplatePropertyNameValue
Single ValueFireRiskFactorIfcLabel
Single ValueFlammableStorageIfcBoolean
Single ValueFireExitIfcBoolean
Single ValueSprinklerProtectionIfcBoolean
Single ValueSprinklerProtectionAutomaticIfcBoolean
Single ValueAirPressurizationIfcBoolean
Pset_SpaceLightingRequirements
TemplatePropertyNameValue
Single ValueArtificialLightingIfcBoolean
Single ValueIlluminanceIfcIlluminanceMeasure
Pset_SpaceOccupancyRequirements
TemplatePropertyNameValue
Single ValueOccupancyTypeIfcLabel
Single ValueOccupancyNumberIfcCountMeasure
Single ValueOccupancyNumberPeakIfcCountMeasure
Single ValueOccupancyTimePerDayIfcTimeMeasure
Single ValueAreaPerOccupantIfcAreaMeasure
Single ValueMinimumHeadroomIfcLengthMeasure
Single ValueIsOutlookDesirableIfcBoolean
Pset_SpaceThermalRequirements
TemplatePropertyNameValue
Single ValueSpaceTemperatureIfcThermodynamicTemperatureMeasure
Single ValueSpaceTemperatureMaxIfcThermodynamicTemperatureMeasure
Single ValueSpaceTemperatureMinIfcThermodynamicTemperatureMeasure
Single ValueSpaceTemperatureSummerMaxIfcThermodynamicTemperatureMeasure
Single ValueSpaceTemperatureSummerMinIfcThermodynamicTemperatureMeasure
Single ValueSpaceTemperatureWinterMaxIfcThermodynamicTemperatureMeasure
Single ValueSpaceTemperatureWinterMinIfcThermodynamicTemperatureMeasure
Single ValueSpaceHumidityIfcRatioMeasure
Single ValueSpaceHumidityMaxIfcRatioMeasure
Single ValueSpaceHumidityMinIfcRatioMeasure
Single ValueSpaceHumiditySummerIfcRatioMeasure
Single ValueSpaceHumidityWinterIfcRatioMeasure
Single ValueDiscontinuedHeatingIfcBoolean
Single ValueNaturalVentilationIfcBoolean
Single ValueNaturalVentilationRateIfcCountMeasure
Single ValueMechanicalVentilationRateIfcCountMeasure
Single ValueAirConditioningIfcBoolean
Single ValueAirConditioningCentralIfcBoolean
Pset_AirSideSystemInformation
TemplatePropertyNameValueReference
Single ValueNameIfcLabel
Single ValueDescriptionIfcLabel
Single ValueTotalAirflowIfcVolumetricFlowRateMeasure
Single ValueEnergyGainTotalIfcPowerMeasure
Single ValueAirflowSensibleIfcVolumetricFlowRateMeasure
Single ValueEnergyGainSensibleIfcPowerMeasure
Single ValueEnergyLossIfcPowerMeasure
Single ValueLightingDiversityIfcPositiveRatioMeasure
Single ValueInfiltrationDiversitySummerIfcPositiveRatioMeasure
Single ValueInfiltrationDiversityWinterIfcPositiveRatioMeasure
Single ValueApplianceDiversityIfcPositiveRatioMeasure
Single ValueLoadSafetyFactorIfcPositiveRatioMeasure
Single ValueHeatingTemperatureDeltaIfcThermodynamicTemperatureMeasure
Single ValueCoolingTemperatureDeltaIfcThermodynamicTemperatureMeasure
Single ValueVentilationIfcVolumetricFlowRateMeasure
Single ValueFanPowerIfcPowerMeasure
Enumerated ValueAirSideSystemTypeIfcLabel
Enumerated ValueAirSideSystemDistributionTypeIfcLabel
Pset_SpaceThermalDesign
TemplatePropertyNameValue
Single ValueCoolingDesignAirflowIfcVolumetricFlowRateMeasure
Single ValueHeatingDesignAirflowIfcVolumetricFlowRateMeasure
Single ValueTotalSensibleHeatGainIfcPowerMeasure
Single ValueTotalHeatGainIfcPowerMeasure
Single ValueTotalHeatLossIfcPowerMeasure
Single ValueCoolingDryBulbIfcThermodynamicTemperatureMeasure
Single ValueCoolingRelativeHumidityIfcPositiveRatioMeasure
Single ValueHeatingDryBulbIfcThermodynamicTemperatureMeasure
Single ValueHeatingRelativeHumidityIfcPositiveRatioMeasure
Single ValueVentilationAirFlowrateIfcVolumetricFlowRateMeasure
Single ValueExhaustAirFlowrateIfcVolumetricFlowRateMeasure
Single ValueCeilingRAPlenumIfcBoolean
Single ValueBoundaryAreaHeatLossIfcHeatFluxDensityMeasure
Pset_SpaceThermalLoad
TemplatePropertyNameUpperValueLowerValueSetValue
Bounded ValuePeopleIfcPowerMeasure
Bounded ValueLightingIfcPowerMeasure
Bounded ValueEquipmentSensibleIfcPowerMeasure
Bounded ValueVentilationIndoorAirIfcPowerMeasure
Bounded ValueVentilationOutdoorAirIfcPowerMeasure
Bounded ValueRecirculatedAirIfcPowerMeasure
Bounded ValueExhaustAirIfcPowerMeasure
Bounded ValueAirExchangeRateIfcPowerMeasure
Bounded ValueDryBulbTemperatureIfcPowerMeasure
Bounded ValueRelativeHumidityIfcPowerMeasure
Bounded ValueInfiltrationSensibleIfcPowerMeasure
Bounded ValueTotalSensibleLoadIfcPowerMeasure
Bounded ValueTotalLatentLoadIfcPowerMeasure
Bounded ValueTotalRadiantLoadIfcPowerMeasure

Table 84 — IfcSpace Property Sets for Objects



Quantity Sets

The Quantity Sets concept template applies to this entity as shown in Table 85.

QsetNameQuantities
Qto_SpaceBaseQuantities

Table 85 — IfcSpace Quantity Sets



Space Boundaries 1st Level

The Space Boundaries 1st Level concept applies to this entity.



Space Boundaries 2nd Level

The Space Boundaries 2nd Level concept applies to this entity.



Product Local Placement

The Product Local Placement concept applies to this entity.

The local placement for IfcSpace is defined at its supertype IfcProduct. It is defined by the IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.



FootPrint GeomSet Geometry

The FootPrint GeomSet Geometry concept template applies to this entity as shown in Table 86.

IdentifierTypeItemsDescription
FootPrintCurve2DIfcBoundedCurveA single curve defining the outer boundary

Table 86 — IfcSpace FootPrint GeomSet Geometry

The following constraints apply to the 2D representation:

 

2d representation
EXAMPLE  Figure 185 shows a two-dimensional bounded curve representing the foot print of IfcSpace.

Figure 185 — Space footprint

 


Body SweptSolid Geometry

The Body SweptSolid Geometry concept applies to this entity.

The following constraints apply to the standard representation:

Figure 186 shows an extrusion of an arbitrary profile definition with voids into the swept area solid of IfcSpace.

"fig1"

Figure 186 — Space body swept solid



Body Clipping Geometry

The Body Clipping Geometry concept applies to this entity.

The following additional constraints apply to the advanced representation:

Figure 187 shows an extrusion of an arbitrary profile definition into the swept area solid. The solid and an half space solid are operands of the Boolean result of IfcSpace.

"fig2"

Figure 187 — Space body clipping



Body Brep Geometry

The Body Brep Geometry concept applies to this entity.

The space can be represented by a brep geometry representation



mvdXML Specification
<?xml version="1.0" encoding="utf-8"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" uuid="0908a431-91f5-4a23-b53b-f6098628d17a" name="IfcSpace" applicableRootEntity="IfcSpace">
 <Applicability>
  <Template ref="cb416a7a-1c2e-4885-a1bc-a576614bce5b" />
  <TemplateRules operator="and">
  </TemplateRules>
 </Applicability>
 <Concepts>
  <Concept uuid="ff9baddb-af39-40ee-a10c-663525809342" name="Spatial Composition">
   <Template ref="8c0fd2f7-71bb-4e6e-8fdb-0c02b352f14a" />
  </Concept>
  <Concept uuid="153728cb-e52f-4863-9ecb-612e831e29c2" name="Spatial Decomposition">
   <Template ref="667f8443-ecce-4a8d-a63f-931fab0453e0" />
  </Concept>
  <Concept uuid="b1a346d6-80fe-41d5-9093-d6db3b303405" name="Spatial Container">
   <Template ref="61dd08ed-fd01-4955-9337-8afd284a0e6f" />
  </Concept>
  <Concept uuid="bbb87cca-1548-475b-9ea8-7ce38cfbcd5c" name="Property Sets for Objects">
   <Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
   <TemplateRules operator="and">
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceCommon&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceCoveringRequirements&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceFireSafetyRequirements&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceLightingRequirements&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceOccupancyRequirements&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceThermalRequirements&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_AirSideSystemInformation&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceThermalDesign&apos;" />
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_SpaceThermalLoad&apos;" />
   </TemplateRules>
  </Concept>
  <Concept uuid="62e97880-025f-49b0-9933-7b589f649760" name="Quantity Sets">
   <Template ref="6652398e-6579-4460-8cb4-26295acfacc7" />
   <TemplateRules operator="and">
    <TemplateRule Parameters="QsetName[Value]=&apos;Qto_SpaceBaseQuantities&apos;" />
   </TemplateRules>
  </Concept>
  <Concept uuid="e765c045-9afc-4971-a74b-33ad2510896c" name="Space Boundaries 1st Level">
   <Template ref="6ae2d514-e2bd-4a24-b984-9b11725fc7db" />
  </Concept>
  <Concept uuid="a9990334-4d0f-4e28-bf32-d6f288117da8" name="Space Boundaries 2nd Level">
   <Template ref="c6047bf3-576d-4042-8e84-7f22a4cca95f" />
  </Concept>
  <Concept uuid="671cd388-9c8f-4b43-8b98-00c44cc7c10d" name="Product Local Placement">
   <Template ref="cbe85b5f-7912-4a43-8bb7-1e63bf40b26d" />
  </Concept>
  <Concept uuid="4479fc6b-1c26-4cb4-8418-8290d497aa78" name="FootPrint GeomSet Geometry">
   <Template ref="9456d6d6-a62a-48b4-baff-be2e38baac9c" />
   <TemplateRules operator="and">
    <TemplateRule Description="A single curve defining the outer boundary" Parameters="Identifier[Value]=&apos;FootPrint&apos; AND Type[Value]=&apos;Curve2D&apos; AND Items[Type]=&apos;IfcBoundedCurve&apos;" />
   </TemplateRules>
  </Concept>
  <Concept uuid="dbfe4f57-2de4-4e74-a1a1-406faad360c9" name="Body SweptSolid Geometry">
   <Template ref="cb7c18fa-cf83-4db1-be1b-c013ba4ed672" />
  </Concept>
  <Concept uuid="bd69adee-801d-44bf-88e3-d3b3c2191ee7" name="Body Clipping Geometry">
   <Template ref="2cdbc2f5-9b0c-43ea-9d2a-9d72d0147e00" />
  </Concept>
  <Concept uuid="2d2ec04e-6389-4b15-abdb-6a67db1f6202" name="Body Brep Geometry">
   <Template ref="8fb923f5-b82d-48d2-ad29-d678ca473fda" />
  </Concept>
 </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObjectDefinition
Classification AssociationClassification AssociationGeneral Usage
IfcObject
Object User IdentityObject User IdentityGeneral Usage
Object Predefined TypeObject Predefined TypeGeneral Usage
Object TypingObject TypingGeneral Usage
Property Sets with OverrideProperty Sets with OverrideGeneral Usage
IfcProduct
Product PlacementProduct PlacementGeneral Usage
Product Geometric RepresentationProduct Geometric RepresentationGeneral Usage
IfcSpace
Spatial CompositionSpatial CompositionGeneral Usage
Spatial DecompositionSpatial DecompositionGeneral Usage
Spatial ContainerSpatial ContainerGeneral Usage
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
Quantity SetsQuantity SetsGeneral Usage
Space Boundaries 1st LevelSpace Boundaries 1st LevelGeneral Usage
Space Boundaries 2nd LevelSpace Boundaries 2nd LevelGeneral Usage
Product Local PlacementProduct Local PlacementGeneral Usage
FootPrint GeomSet GeometryFootPrint GeomSet GeometryGeneral Usage
Body SweptSolid GeometryBody SweptSolid GeometryGeneral Usage
Body Clipping GeometryBody Clipping GeometryGeneral Usage
Body Brep GeometryBody Brep GeometryGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcSpace" type="ifc:IfcSpace" substitutionGroup="ifc:IfcSpatialStructureElement" nillable="true"/>
 <xs:complexType name="IfcSpace">
  <xs:complexContent>
   <xs:extension base="ifc:IfcSpatialStructureElement">
    <xs:attribute name="PredefinedType" type="ifc:IfcSpaceTypeEnum" use="optional"/>
    <xs:attribute name="ElevationWithFlooring" type="ifc:IfcLengthMeasure" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcSpace
 SUBTYPE OF (IfcSpatialStructureElement);
  PredefinedType : OPTIONAL IfcSpaceTypeEnum;
  ElevationWithFlooring : OPTIONAL IfcLengthMeasure;
 INVERSE
  HasCoverings : SET [0:?] OF IfcRelCoversSpaces FOR RelatingSpace;
  BoundedBy : SET [0:?] OF IfcRelSpaceBoundary FOR RelatingSpace;
 WHERE
  CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR
(PredefinedType <> IfcSpaceTypeEnum.USERDEFINED) OR
((PredefinedType = IfcSpaceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
  CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR
('IFCPRODUCTEXTENSION.IfcSpaceType' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcSpaceBoundarySelect IfcRelCoversSpaces

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