IfcRelCoversSpaces

BACnet MVD

#### IfcRelCoversSpaces

Natural language names

| Ordnet Bekleidung / Belag einem Raum zu - Relation
| Rel Covers Spaces

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcRelCoversSpaces |  |  | MOVED | Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory |  |  | MODIFIED | Instantiation changed to OPTIONAL.
RelatingSpace |  | X | MODIFIED | Name changed from RelatedSpace to RelatingSpace.

##### Semantic definitions at the entity

Entity definition

The objectified relationship, IfcRelCoversSpace, relates a space object to one or many coverings, which faces (or is assigned to) the space.

> NOTE Particularly floorings, ceilings and wall coverings, such as claddings or tiling are often considered as space coverings, rather then wall or slab coverings. In some life cycle phases, such as the operation phase, the relationship is always made to the space.

The IFC specification provides two relationships:

- IfcRelCoversBldgElements to assign coverings to elements.

  > NOTE This relationship is now deprecated and replaced by IfcRelAggregates.

- IfcRelCoversSpaces to assign coverings to spaces

  > NOTE This relationship is now deprecated and replaced by IfcRelContainedInSpatialStructure.

Whether the relationship between the covering and the space, or between the covering and the element, is regarded as primary, has to be determined within the context of a model view definition.

> HISTORY New entity in IFC2x3.

> DEPRECATION The relationship IfcRelCoversSpace shall not be used anymore, use IfcRelContainedInSpatialStructure instead.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---

5

RelatingSpace

IfcSpace

Relationship to the space object that is covered.

> IFC4 CHANGE The attribute name has been changed from RelatedSpace to RelatingSpace with upward compatibility for file based exchange.

X

6 | RelatedCoverings | IfcCovering | S[1:?] | Relationship to the set of coverings covering that cover surfaces of this space. |  | X

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcRoot
1 | GlobalId | IfcGloballyUniqueId |  | Assignment of a globally unique identifier within the entire software world. | X | 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

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 | X
4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. |  | X
IfcRelationship
IfcRelConnects
IfcRelCoversSpaces

5

RelatingSpace

IfcSpace

Relationship to the space object that is covered.

> IFC4 CHANGE The attribute name has been changed from RelatedSpace to RelatingSpace with upward compatibility for file based exchange.

X

6 | RelatedCoverings | IfcCovering | S[1:?] | Relationship to the set of coverings covering that cover surfaces of this space. |  | X

##### Definitions applying to Design Transfer View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Definitions applying to BACnet View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Formal representations

XML Specification
`<xs:element name="IfcRelCoversSpaces" type="ifc:IfcRelCoversSpaces" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>
<xs:complexType name="IfcRelCoversSpaces">
<xs:complexContent>
<xs:extension base="ifc:IfcRelConnects">
<xs:sequence>
<xs:element name="RelatingSpace" type="ifc:IfcSpace" nillable="true"/>
<xs:element name="RelatedCoverings">
<xs:complexType>
<xs:sequence>
<xs:element ref="ifc:IfcCovering" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute ref="ifc:itemType" fixed="ifc:IfcCovering"/>
<xs:attribute ref="ifc:cType" fixed="set"/>
<xs:attribute ref="ifc:arraySize" use="optional"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcRelCoversSpaces
SUBTYPE OF (IfcRelConnects);
RelatingSpace : IfcSpace;
RelatedCoverings : SET [1:?] OF IfcCovering;
END_ENTITY;

EXPRESS-G diagram

`

References: IfcSpace IfcCovering

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