IfcRelFillsElement

BACnet MVD

#### IfcRelFillsElement

Natural language names

| Element als Füllung einer Öffnung - Relation
| Rel Fills Element
| Relation de remplissage

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcRelFillsElement |  |  |  |
OwnerHistory |  |  | MODIFIED | Instantiation changed to OPTIONAL.
IFC4 Addendum 2
IfcRelFillsElement |  |  |  |
RelatingOpeningElement |  | X | MODIFIED | Xsdformat changed from Attribute to Hidden.

##### Semantic definitions at the entity

Entity definition

IfcRelFillsElement is an objectified relationship between an opening element and an element that fills (or partially fills) the opening element. It is an one-to-one relationship.

> NOTE View definitions or implementer agreements may restrict an opening to be filled by one filling element only.

As shown in Figure 172, the insertion of a door into a wall is represented by two separate relationships. First the door opening is created within the wall by IfcWall(StandardCase) <-- IfcRelVoidsElement --> IfcOpeningElement, then the door is inserted within the opening by IfcOpeningElement <-- IfcRelFillsElement --> IfcDoor.

Figure 172 — Relationships for element filling

> HISTORY New entity in IFC1.0

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
5 | RelatingOpeningElement | IfcOpeningElement |  | Opening Element being filled by virtue of this relationship. |  | X

6

RelatedBuildingElement

IfcElement

Reference to building element that occupies fully or partially the associated opening.

> IFC2x CHANGE The data type has been changed from IfcBuildingElement to IfcElement with upward compatibility for file based exchange.

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
IfcRelFillsElement
5 | RelatingOpeningElement | IfcOpeningElement |  | Opening Element being filled by virtue of this relationship. |  | X

6

RelatedBuildingElement

IfcElement

Reference to building element that occupies fully or partially the associated opening.

> IFC2x CHANGE The data type has been changed from IfcBuildingElement to IfcElement with upward compatibility for file based exchange.

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

##### Examples

- Wall with opening and window

##### Formal representations

XML Specification
`<xs:element name="IfcRelFillsElement" type="ifc:IfcRelFillsElement" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>
<xs:complexType name="IfcRelFillsElement">
<xs:complexContent>
<xs:extension base="ifc:IfcRelConnects">
<xs:sequence>
<xs:element name="RelatedBuildingElement" type="ifc:IfcElement" nillable="true"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcRelFillsElement
SUBTYPE OF (IfcRelConnects);
RelatingOpeningElement : IfcOpeningElement;
RelatedBuildingElement : IfcElement;
END_ENTITY;

EXPRESS-G diagram

`

References: IfcElement IfcOpeningElement

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