Stiffness in Sap 2000

[Faezeh1369]

I am modeling a building in SAP2000 software. The stiffness I have to assign in X direction is different from the one in Y direction. Does any one know how I can assign these two numbers to my building as stiffness?

 

[PSEPK]

AFAIK, we do not assign 'stiffness' values to the structure in a SAP2000 model, in any direction. Rather, the stifness is calculated by the software, using cross-sectional properties of structural members applicable in the relevant direction (X or Y), from trial sizes of these member used in the software model.

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