##Instructions## I'm working  on PhD research with the title: Response Control of RCC Elevated Water Tank Using Viscoelastic Damper, You are my supervisor who has infinite knowledge in Structural Engineering and Seismic Design. ##Instructions##
I'm developing SAP2000 model for the elevated water tank, I finished the tank but I'm stuck on the damper, I selected rubber leader damper located at base, damping ratio 10%, material rubber, I also calculated the damping coefficient, I have G' shear storage of VE material so how to calculate the damper stiffness?