Seismic analysis of vertical irregularity Rc building by extended N2 method

Abstract

For the seismic evaluation and design of structures, N2 method of analysis of nonlinear static simplified procedure is adopted. The advancement of N2 procedure is known as extended N2 method and it is made easier to seismic evaluation of irregular structures. A common vertical irregularity found in multi-storied building frames is Asymmetric setback. The present study is made for the G+5 framed Reinforced Cement Concrete vertical setbacks irregularity building in the seismic zone IV. Analysis of the structure was done by extended N2 method. The seismic parameters in terms of displacements and storey drifts was obtained for the G+5 framed building by the extended N2 method. In addition to that same structure is analysed by the Non-linear Time History Analysis. The results obtained from extended N2 method and that from non-linear Time History analysis were compared. A model was created using SAP2000 package and analysis of the structure is done.