IfcModulusOfSubgradeReactionSelect

BACnet MVD

#### IfcModulusOfSubgradeReactionSelect

Natural language names

| Modulus Of Subgrade Reaction Select

Change log

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

##### Semantic definitions at the type

Type definition

Bedding measure which expresses the bedding of a structural face item per area. 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 |
IfcModulusOfSubgradeReactionMeasure |

##### Formal representations

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

EXPRESS-G diagram

`

References: IfcBoundaryFaceCondition

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