The structural efficiency of high rise buildings depends heavily on its resisting capacity and lateral stiffness. With the
rise in height of the building, the requirement of new structural system arises in order to increase its performance under lateral
loads. This paper presents seismic analysis of different lateral load resisting systems such as Rigid Frame system, Core and
Outrigger system under 10,15 and 20 story building for seismic zone IV for soil type III. Models are analysed using Response
Spectrum Method in ETABS V18.0.0 software package as per IS 1893( Part 1):2016. The performance of structural systems are
analysed considering parameters such as the top story displacement, base shear, axial force and bending moment of critical
columns at base. The objective of present work is to check the effectiveness of Rigid Frame system, Core system and Outrigger
structural system placed at various positions under increasing height
