Dear Members,
I am designing 13 storey commercial building. Plot is trapezoidal having larger length in Y direction and shorter in X direction. Due to the shape of plot and building as well i have to introduce shear walls in X direction to control torsion and drift. But client is not happy with the dimensions of shear walls and colum. Can anyone suggest a structural system for designing in which i can economize the cross-sections and control the drifts as well?