IfcBeamTypeEnum

BACnet MVD

#### IfcBeamTypeEnum

Natural language names

| Beam Type Enum
| Énumération des types de poutres

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcBeamTypeEnum |  |  |  |
HOLLOWCORE |  |  | ADDED |
SPANDREL |  |  | ADDED |

##### Semantic definitions at the type

Type definition

This enumeration defines the different predefined types of beams that can further specify an IfcBeam or IfcBeamType.

> HISTORY New enumeration type in IFC2x2.

> IFC4 CHANGE The enumerators HOLLOWCORE and SPANDREL have been added.

Enumeration definition

Constant | Description
--- | ---
BEAM | A standard beam usually used horizontally.
JOIST | A beam used to support a floor or ceiling.
HOLLOWCORE | A wide often prestressed beam with a hollow-core profile that usually serves as a slab component.
LINTEL | A beam or horizontal piece of material over an opening (e.g. door, window).
SPANDREL | A tall beam placed on the facade of a building. One tall side is usually finished to provide the exterior of the building. Can be used to support joists or slab elements on its interior side.
T_BEAM | A beam that forms part of a slab construction and acts together with the slab which its carries. Such beams are often of T-shape (therefore the English name), but may have other shapes as well, e.g. an L-Shape or an Inverted-T-Shape.
USERDEFINED | User-defined linear beam element.
NOTDEFINED | Undefined linear beam element.

##### Formal representations

XML Specification
`<xs:simpleType name="IfcBeamTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="beam"/>
<xs:enumeration value="joist"/>
<xs:enumeration value="hollowcore"/>
<xs:enumeration value="lintel"/>
<xs:enumeration value="spandrel"/>
<xs:enumeration value="t_beam"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcBeamTypeEnum = ENUMERATION OF (
BEAM,
JOIST,
HOLLOWCORE,
LINTEL,
SPANDREL,
T_BEAM,
USERDEFINED,
NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

`

References: IfcBeam IfcBeamType

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