Key words: concrete shear walls, dual systems, ETABS, lateral loads, shear deformation.rnConcrete shear walls or structural walls are often used in multistory buildings to resist lateralrnloads such as wind, seismic and blast loads. Such walls are used when the frame system alone isrninsufficient or uneconomical to withstand all the lateral loads or when partition walls can bernmade load bearing, replacing columns and beams.rnThe analysis of buildings with shear walls became simple using commercially available computerrnprograms based on the finite element method (FEM) and subsequent implementation of stressrnintegration techniques to arrive at generalized forces (axial, shear, and moments). On the otherrnhand, design engineers without such facilities or those with computer facilities lacking suchrnfeatures use simple method of analysis by taking the entire dimensions of the walls. This is donernby considering the shear walls as wide columns of high moment of inertia and following the samernprocedure as for columns, a structural modeling approach that leads to incorrect results.rnTherefore, it is the primary purpose of this research work to correlate the results obtained fromrnthe above simple but incorrect method of analysis and those from true wall behaviors with anrnultimate goal of providing the analysts and the designers with correction factors in order tornimplement the centerline method of analysis for the analysis of walls. It is believed that structuralrnengineers working in the analysis and design of high- rise buildings will be benefited from thernresults.