IfcSolidOrShell

BACnet MVD

#### IfcSolidOrShell

Natural language names

| Solid Or Shell
| Solide ou enveloppe

Change log

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

##### Semantic definitions at the type

Type definition

The IfcSolidOrShell provides the option to either select a geometric volume (IfcSolidModel and subtypes) within a geometric model, or a shell (IfcClosedShell) within a topological model.

> HISTORY New select type in IFC4.

Select definition

Type | Description
--- | ---
IfcSolidModel |
IfcClosedShell |

##### Formal representations

XML Specification
`<xs:group name="IfcSolidOrShell">
<xs:choice>
<xs:element ref="ifc:IfcClosedShell"/>
<xs:element ref="ifc:IfcSolidModel"/>
</xs:choice>
</xs:group>
`
EXPRESS Specification
`TYPE IfcSolidOrShell = SELECT (
IfcSolidModel,
IfcClosedShell);
END_TYPE;

EXPRESS-G diagram

`

References: IfcConnectionVolumeGeometry

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