Braced frames are known to be efficient structural systems for buildings under high lateral loads such as seismic or wind loadings. The potential advantage of bracing system is that it is comparatively small increase in mass associated with the retrofitting scheme since this is a great problem for several retrofitting techniques. In this study building modeling is done for regular and vertical irregular building with and without bracing system. Response spectrum analysis is done for each model with different types of bracings. The results in terms of displacement, storey drift, storey shear of regular and irregular structure is compared.