8.19.3.19 IfcStructuralLoadTemperature
8.19.3.19.1 Semantic definition
An instance of the entity IfcStructuralLoadTemperature shall be used to define actions which are caused by a temperature change. As shown in Figure 8.19.3.19.A, 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.
New entity in IFC2x2.
8.19.3.19.2 Entity inheritance
8.19.3.19.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcStructuralLoad (1) | |||
| 1 | Name | OPTIONAL IfcLabel |
Optionally defines a name for this load. |
| Click to show 1 hidden inherited attributes Click to hide 1 inherited attributes | |||
| IfcStructuralLoadTemperature (3) | |||
| 2 | DeltaTConstant | OPTIONAL IfcThermodynamicTemperatureMeasure |
Temperature change which affects the complete section of the structural member, or the uniform portion of a non-uniform temperature change. 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. |
| 3 | DeltaTY | OPTIONAL 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. 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. |
| 4 | DeltaTZ | OPTIONAL 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. 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. |
8.19.3.19.4 Formal representation
ENTITY IfcStructuralLoadTemperature
SUBTYPE OF (IfcStructuralLoadStatic);
DeltaTConstant : OPTIONAL IfcThermodynamicTemperatureMeasure;
DeltaTY : OPTIONAL IfcThermodynamicTemperatureMeasure;
DeltaTZ : OPTIONAL IfcThermodynamicTemperatureMeasure;
END_ENTITY;