IfcWarpingStiffnessSelect

BACnet MVD

#### IfcWarpingStiffnessSelect

Natural language names

| Warping Stiffness Select

Change log

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

##### Semantic definitions at the type

Type definition

A measure of warping stiffness. TRUE denotes infinite stiffness (rigidity). FALSE denotes no stiffness (a release). A numeric value denotes finite linear-elastic stiffness.

> HISTORY New type in IFC4.

Select definition

Type | Description
--- | ---
IfcBoolean |
IfcWarpingMomentMeasure |

##### Formal representations

XML Specification
`<xs:group name="IfcWarpingStiffnessSelect">
<xs:choice>
<xs:element ref="ifc:IfcBoolean-wrapper"/>
<xs:element ref="ifc:IfcWarpingMomentMeasure-wrapper"/>
</xs:choice>
</xs:group>
`
EXPRESS Specification
`TYPE IfcWarpingStiffnessSelect = SELECT (
IfcBoolean,
IfcWarpingMomentMeasure);
END_TYPE;

EXPRESS-G diagram

`

References: IfcBoundaryNodeConditionWarping

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