Composite construction, we discuss herein, is the combination of two materials viz. Reinforced concrete and structural steel used for the purpose of building yielding to behave together, increase safety and more economic without any damage to the aesthetic appearance. The deformation compatibility between two materials and the corresponding transfer of shear forces are maintained through friction or shear connectors. The composite structure is modelled in 3D form. While composite beam and column are moulded in beam elements, shear wall and slab are moulded as slab element. For high rise building, as being considered by us, the foundation is generally raft slab with under ream or driven piles. One more advantage in composite structure is its reduction of weight for the cause of reduced size of beam. E.g. - One can reduce the floor to floor height to 2.85m instead of 3.15m as in the case of R.C.C slab with conventional R.C.C. beam. Thus, a reduction of moment considerably
