1. Seismic Effect of Masonry Infill with Open and Shear Wall on Flat Slab Structures
In the design of tall structures it is essential that the structure must be enough stiff to resist the lateral loads caused by wind and seismic motion. Lateral loads leads to develop high stresses, produce sway movement or cause vibration. Therefore, it is a must for the structure to have sufficient strength against vertical loads together with adequate stiffness to resist lateral forces. Many researches has been carried which describes the suitability of various lateral load resisting system against deformation and shear exerted due to the seismic and wind forces. The RC structures with shear wall and MI frame have been recognized as one of the most efficient structural system for such a purpose. A flat slab is a typical type of construction in which a reinforced slab is built monolithically with the supporting columns and is reinforced in two or more directions, without any provision of beams. Flat slab structures in areas of low seismicity (Zone I & II) can be designed to resist both vertical and lateral loads as permitted by code IS: 1893(Part1)-2002. However for areas of high seismicity (Zone III, IV & V) code does not permit flat slab construction without any lateral load resisting system. In a building having frames (without beam) and with shear wall, the frames are designed for at least 25% of the seismic force and 75% is taken by the shear wall. If effect of lateral load analysis and other design features are to be studied in flat slabs; punching shear is a matter of concern for any structural designer.
Published by: Janardanachar M. H, D. Prakash
Research Area: Civil Engineering