Structures are expected to satisfy life safety performance levels under strong ground motions. It could be understood that can only be possible by allowing minor damage to the structural elements if the economy is taken account. This is also the definition of capacity design which is mainly accepted by the mass in recent years. In this approach, the structure is expected to dissipate enormous energy generated by strong ground motions by its nonlinear behavior. This nonlinear behavior generally translates to plastic hinges forming on the beam – column joints. However, the position and the condition of this plastic hinges could cause failure of the structure. Various energy damping systems can be added to the structure to dissipate the enormous energy generated during the strong ground motions. One of these is metallic yielding dampers. These systems not only increase the lateral rigidity of the structure but also reduce the internal forces to the structural elements by increasing the damping ratio. These systems, which are yield during strong ground motions, dissipate most of the energy. These are both economic and effective systems as they can be easily changed after they damaged.