Form: Property/Stiffness Modification Factors
Use the Assign menu > Beam Data > Property Modifiers command to assign property/stiffness modification factors to a selected beam object.
Select one or more beam objects in the datum plane (not columns or braces).
Click the Assign menu > Beam Data > Property Modifiers command to access the Property/Stiffness Modification Factors form, which offers modification factors for axial area, shear areas, torsional constant, moment of inertias, and weight. A factor of one entered into an edit box will result in no change to the property value being used. A factor other than one will linearly scale the property value by the assigned factor.
For additional information on beam geometric properties, please consult “The Frame/Cable Element” chapter in the Analysis Reference Manual (see Help menu > Documentation command, Manuals subdirectory).
Note: SAFE automatically applies an internal torsional stiffness modifier of 0.1 to beams to avoid undesirable torsional load paths.