| Attribute | Type | Defined By | 
|---|
|  Name | IfcLabel (STRING) | IfcBoundaryCondition | 
|  TranslationalStiffnessByLengthX | IfcModulusOfTranslationalSubgradeReactionSelect (SELECT) | IfcBoundaryEdgeCondition | 
|  TranslationalStiffnessByLengthY | IfcModulusOfTranslationalSubgradeReactionSelect (SELECT) | IfcBoundaryEdgeCondition | 
|  TranslationalStiffnessByLengthZ | IfcModulusOfTranslationalSubgradeReactionSelect (SELECT) | IfcBoundaryEdgeCondition | 
|  RotationalStiffnessByLengthX | IfcModulusOfRotationalSubgradeReactionSelect (SELECT) | IfcBoundaryEdgeCondition | 
|  RotationalStiffnessByLengthY | IfcModulusOfRotationalSubgradeReactionSelect (SELECT) | IfcBoundaryEdgeCondition | 
|  RotationalStiffnessByLengthZ | IfcModulusOfRotationalSubgradeReactionSelect (SELECT) | IfcBoundaryEdgeCondition |