 | Temperaturlast |
 | Structural Load Temperature |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
|---|---|---|---|---|
| IfcStructuralLoadTemperature | ||||
| DeltaTConstant | X | MODIFIED | Name changed from DeltaT_Constant to DeltaTConstant. | |
| DeltaTY | X | MODIFIED | Name changed from DeltaT_Y to DeltaTY. | |
| DeltaTZ | X | MODIFIED | Name changed from DeltaT_Z to DeltaTZ. |
An instance of the entity IfcStructuralLoadTemperature shall be used to define actions which are caused by a temperature change. As shown in Figure 437, the change of temperature is given with a constant value which is applied to the complete section and values for temperature differences between outer fibres of the section.
HISTORY New entity in IFC2x2.
Figure 437 — Structural load temperature |
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 2 | DeltaTConstant | IfcThermodynamicTemperatureMeasure | ? |
Temperature change which affects the complete section of the structural member, or the uniform portion of a non-uniform temperature change.
NOTE A positive value describes an increase in temperature. I.e. a positive constant temperature change causes elongation of a member, or compression in the member if there are respective restraints. | X |
| 3 | DeltaTY | IfcThermodynamicTemperatureMeasure | ? |
Non-uniform temperature change, specified as the difference of the temperature change at the outer fibre of the positive y direction minus the temperature change at the outer fibre of the negative y direction of the analysis member.
NOTE A positive non-uniform temperature change in y induces a negative curvature of the member about z, or a positive bending moment about z if there are respective restraints. y and z are local member axes. | X |
| 4 | DeltaTZ | IfcThermodynamicTemperatureMeasure | ? |
Non-uniform temperature change, specified as the difference of the temperature change at the outer fibre of the positive z direction minus the temperature change at the outer fibre of the negative z direction of the analysis member.
NOTE A positive non-uniform temperature change in z induces a positive curvature of the member about y, or a negative bending moment about y if there are respective restraints. y and z are local member axes. | X |
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcStructuralLoad | |||||
| 1 | Name | IfcLabel | ? | Optionally defines a name for this load. | X |
| IfcStructuralLoadOrResult | |||||
| IfcStructuralLoadStatic | |||||
| IfcStructuralLoadTemperature | |||||
| 2 | DeltaTConstant | IfcThermodynamicTemperatureMeasure | ? |
Temperature change which affects the complete section of the structural member, or the uniform portion of a non-uniform temperature change.
NOTE A positive value describes an increase in temperature. I.e. a positive constant temperature change causes elongation of a member, or compression in the member if there are respective restraints. | X |
| 3 | DeltaTY | IfcThermodynamicTemperatureMeasure | ? |
Non-uniform temperature change, specified as the difference of the temperature change at the outer fibre of the positive y direction minus the temperature change at the outer fibre of the negative y direction of the analysis member.
NOTE A positive non-uniform temperature change in y induces a negative curvature of the member about z, or a positive bending moment about z if there are respective restraints. y and z are local member axes. | X |
| 4 | DeltaTZ | IfcThermodynamicTemperatureMeasure | ? |
Non-uniform temperature change, specified as the difference of the temperature change at the outer fibre of the positive z direction minus the temperature change at the outer fibre of the negative z direction of the analysis member.
NOTE A positive non-uniform temperature change in z induces a positive curvature of the member about y, or a negative bending moment about y if there are respective restraints. y and z are local member axes. | X |
<xs:element name="IfcStructuralLoadTemperature" type="ifc:IfcStructuralLoadTemperature" substitutionGroup="ifc:IfcStructuralLoadStatic" nillable="true"/>
<xs:complexType name="IfcStructuralLoadTemperature">
<xs:complexContent>
<xs:extension base="ifc:IfcStructuralLoadStatic">
<xs:attribute name="DeltaTConstant" type="ifc:IfcThermodynamicTemperatureMeasure" use="optional"/>
<xs:attribute name="DeltaTY" type="ifc:IfcThermodynamicTemperatureMeasure" use="optional"/>
<xs:attribute name="DeltaTZ" type="ifc:IfcThermodynamicTemperatureMeasure" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcStructuralLoadTemperature
SUBTYPE OF (IfcStructuralLoadStatic);
DeltaTConstant : OPTIONAL IfcThermodynamicTemperatureMeasure;
DeltaTY : OPTIONAL IfcThermodynamicTemperatureMeasure;
DeltaTZ : OPTIONAL IfcThermodynamicTemperatureMeasure;
END_ENTITY;
EXPRESS-G diagram
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