Structural analysis has been done since decades to study the behavior of lateral load resisting systems and for that outrigger structural system has done a tremendous job in this regard. The present work is to study high-rise G+10 3D computer model RCC structure under the influence of earthquake forces. The outrigger location used according to Taranath method. Response spectrum method is used for observing the performance of total seven different cases which include regular, shear core, outrigger and wall belt and outrigger and truss belt supported system. These are studied and parameters such as Base shear, column axial forces and member shear forces were examined. Efficient cases for all the parameters have discussed in this article too.