IfcBuildingSystemTypeEnum

BACnet MVD

#### IfcBuildingSystemTypeEnum

Natural language names

| Building System Type Enum
| Enumération des types de système

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcBuildingSystemTypeEnum |  |  | ADDED |

##### Semantic definitions at the type

Type definition

This enumeration identifies different types of building systems.

> HISTORY New enumeration in IFC4.

Enumeration definition

Constant | Description
--- | ---
FENESTRATION | System of doors, windows, and other fillings in opening in a building envelop that are designed to permit the passage of air or light.
FOUNDATION | System of shallow and deep foundation element that transmit forces to the supporting ground.
LOADBEARING | System of building elements that transmit forces and stiffen the construction.
OUTERSHELL | System of building elements that provides the outer skin to protect the construction (such as the facade).
SHADING | System of shading elements (external or internal) that permits the limitation or control of impact of natural sun light.
TRANSPORT | System of all transport elements in a building that enables the transport of people or goods.
USERDEFINED |
NOTDEFINED |

##### Formal representations

XML Specification
`<xs:simpleType name="IfcBuildingSystemTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="fenestration"/>
<xs:enumeration value="foundation"/>
<xs:enumeration value="loadbearing"/>
<xs:enumeration value="outershell"/>
<xs:enumeration value="shading"/>
<xs:enumeration value="transport"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcBuildingSystemTypeEnum = ENUMERATION OF (
FENESTRATION,
FOUNDATION,
LOADBEARING,
OUTERSHELL,
SHADING,
TRANSPORT,
USERDEFINED,
NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

`

References: IfcBuildingSystem

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