However, the option for applying the Section Stiffness Scale Factors to Stress Calculations may be selected in Analysis > Main Control Data. For stress calculations, original section properties are used. Deformations The scale factors defined here are applied to the calculations for displacements and member forces. Now Let's compare various results of both the models. As we do not have construction stages here and the Boundary group is ' default', thereby these Stiffness scale factors will be applied for the entire analysis. Reduced Section Stiffness data can be applied by following the below procedure. Actual Section Stiffness are shown in below snapshot. Here we will reduce the Iyy flexural stiffness by 50%. For example, Let's consider a Simply Supported Beam of 20m length and rectangle (0.5mx0.5m) cross-section and apply 10kN/m UDL load and check the results with and without Section Stiffness Scale Factors. Useful in cases to perform Cracked Sectional Analysis, Rehabilitation, Stiffness deterioration etc.
Section Stiffness Scale Factors Properties > Section Manager > Stiffness Stiffness scale factors can be applied to a particular section to manipulate(increase/decrease) the sectional stiffness data considered for the analysis.
