Comparison of CFSTs with RCCs and Discussion -IV 15-storeys building modelled in FEM environment Column axial Forces Decreased axial forces 票CCruc间 2h3rd711h15h Nodal Displacement(mm) Increased absolute -CCU.em displacement 11h15 1230000 Cost of Columns ·Reduction of the construction 0015 costs Comparison of CFSTs with RCCs and Discussion – IV 15-storeys building modelled in FEM environment • Decreased axial forces • Increased absolute displacement • Reduction of the construction costs