 | Raum - Typ |
 | Space Type |
 | Type de local |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
|---|---|---|---|---|
| IfcSpaceType | ||||
| OwnerHistory | MODIFIED | Instantiation changed to OPTIONAL. | ||
| ApplicableOccurrence | MODIFIED | Type changed from IfcLabel to IfcIdentifier. | ||
| LongName | ADDED |
A space represents an area or volume bounded actually or theoretically. Spaces are areas or volumes that provide for certain functions within a building.
The IfcSpaceType defines a list of commonly shared defines commonly shared information for occurrences of spaces. The set of shared information may include:
It is used to define an space specification (i.e. the specific space information, that is common to all occurrences of that space type. Space types may be exchanged without being already assigned to occurrences.
NOTE The space types are often used to represent space catalogues, less so for sharing a common representation map. Space types in a space catalogue share same space classification and a common set of space requirement properties.
The occurrences of IfcSpaceType are represented by instances of IfcSpace.
HISTORY New entity in IFC2x3.
IFC4 CHANGE The attribute LongName has been added to the end of the entity definition.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 10 | PredefinedType | IfcSpaceTypeEnum | Predefined types to define the particular type of space. There may be property set definitions available for each predefined type. | X | |
| 11 | LongName | IfcLabel | ? |
Long name for a space type, 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 space type, and the LongName refers to the full descriptive name. IFC4 CHANGE New attribute added at the end of entity definition. | X |
| Rule | Description |
|---|---|
| CorrectPredefinedType | The inherited attribute ElementType shall be provided, if the PredefinedType is set to USERDEFINED. |
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | Assignment of a globally unique identifier within the entire software world. | X | |
| 2 | OwnerHistory | IfcOwnerHistory | ? |
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 |
| 3 | Name | IfcLabel | ? | 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 |
| 4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. | X |
| IfcObjectDefinition | |||||
| HasAssignments | IfcRelAssigns @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 | |
| Nests | IfcRelNests @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 | |
| IsNestedBy | IfcRelNests @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 | |
| HasContext | IfcRelDeclares @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 | |
| IsDecomposedBy | IfcRelAggregates @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 | |
| Decomposes | IfcRelAggregates @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 | |
| HasAssociations | IfcRelAssociates @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 | |
| IfcTypeObject | |||||
| 5 | ApplicableOccurrence | IfcIdentifier | ? |
The attribute optionally defines the data type of the occurrence object, to which the assigned type object can relate. If not present, no instruction is given to which occurrence object the type object is applicable. The following conventions are used:
EXAMPLE Refering to a furniture as applicable occurrence entity would be expressed as 'IfcFurnishingElement', refering to a brace as applicable entity would be expressed as 'IfcMember/BRACE', refering to a wall and wall standard case would be expressed as 'IfcWall, IfcWallStandardCase'. | X |
| 6 | HasPropertySets | IfcPropertySetDefinition | ? S[1:?] |
Set IFC2x3 CHANGE The attribute aggregate type has been changed from LIST to SET. | X |
| Types | IfcRelDefinesByType @RelatingType | S[0:1] | Reference to the relationship IfcRelDefinedByType and thus to those occurrence objects, which are defined by this type. | X | |
| IfcTypeProduct | |||||
| 7 | RepresentationMaps | IfcRepresentationMap | ? L[1:?] | List of unique representation maps. Each representation map describes a block definition of the shape of the product style. By providing more than one representation map, a multi-view block definition can be given. | X |
| 8 | Tag | IfcLabel | ? | The tag (or label) identifier at the particular type of a product, e.g. the article number (like the EAN). It is the identifier at the specific level. | X |
| ReferencedBy | IfcRelAssignsToProduct @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 type.
IFC4 CHANGE New inverse relationship. | X | |
| IfcSpatialElementType | |||||
| 9 | ElementType | IfcLabel | ? | 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 |
| IfcSpatialStructureElementType | |||||
| IfcSpaceType | |||||
| 10 | PredefinedType | IfcSpaceTypeEnum | Predefined types to define the particular type of space. There may be property set definitions available for each predefined type. | X | |
| 11 | LongName | IfcLabel | ? |
Long name for a space type, 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 space type, and the LongName refers to the full descriptive name. IFC4 CHANGE New attribute added at the end of entity definition. | X |
| # | Concept | Template | Model View |
|---|---|---|---|
| IfcRoot | |||
| Identity | Software Identity | General Usage | |
| Revision Control | Revision Control | General Usage | |
| IfcObjectDefinition | |||
| Classification Association | Classification Association | General Usage | |
| IfcTypeProduct | |||
| Product Type Shape | Product Type Shape | General Usage | |
<xs:element name="IfcSpaceType" type="ifc:IfcSpaceType" substitutionGroup="ifc:IfcSpatialStructureElementType" nillable="true"/>
<xs:complexType name="IfcSpaceType">
<xs:complexContent>
<xs:extension base="ifc:IfcSpatialStructureElementType">
<xs:attribute name="PredefinedType" type="ifc:IfcSpaceTypeEnum" use="optional"/>
<xs:attribute name="LongName" type="ifc:IfcLabel" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcSpaceType
SUBTYPE OF (IfcSpatialStructureElementType);
PredefinedType : IfcSpaceTypeEnum;
LongName : OPTIONAL IfcLabel;
WHERE
CorrectPredefinedType : (PredefinedType <> IfcSpaceTypeEnum.USERDEFINED) OR
((PredefinedType = IfcSpaceTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcSpatialElementType.ElementType));
END_ENTITY;
EXPRESS-G diagram
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