Most of the new techniques in seismic design of structures are based on changing the dynamic characteristics of buildings to receive less earthquake input force and energ [...]

Shear walls are among the most common lateral load resisting systems in medium height buildings. This is due, mostly, to their ability in providing the required level of [...]

To study the effect of torsion in seismic behavior of base isolated structures ,a symmetric four story concrete structure was chosen as the reference model. Then models w [...]