Equivalent Static Analysis of Bottom Rigid Beam Storey and Intermediate Soft Storey Having Moment Transfer Beams

Usually RC framed high rise building structures are designed neglecting the effect of masonary infill walls. Wheras the masonary infill walls are used for partition. The masonary infill walls are treated as non-strucutural elements. RC frame structures having open first storey is known as soft storey . The intermediate soft storey is such an element where it is left open as service soft storey without infill. Therefore the soft storey located at the lower part of high rise building experience severe seismic forces being acting on them. In satellite bus stop where bottom soft storey height is more than double height, will have more undesirable impact by the seismic forces. Meanwhile the soft storey located in the upper part of high rise building does not significantly effect the overall performance compared to the performance of the fully infill frame.