The comparison of ductility levels of concentric and eccentric braced multi storey steel buildings due to the non-linear behavior

%90 of population is located at the region of %95 of our country. We are faced with an earthquake risk due to %95 of our industry is also located at this region.By the way of integration in Europe Union, our country is also giving a great effort for the civil engineering codes.As a reason of this , 10 storey commercial building has been taken as a sample model, ductility behaviours are measured within concentric and eccentric braced ones. Each models are compared in order to find the most proper structural system.