Efficiency of lateral system in tall RC building

Abstract

Shear walls have the important properties of lateral resistance in high rise building for earthquake and wind load forces. The sway developed by the lateral forces causes damage to the life and property. Thus, shear walls are initiated in the building to achieve necessary resistance to the lateral forces. Double core shear wall or box section shear wall is important to ensure adequate stiffness, strength and durability. The study has been done to analyze the affect of perimeter frames for structural systems in lateral performance of an irregular shape 30 storey ‘L-shape’ building for the subsequent cases 1: 125mm flat slab with drop, 2: 150mm flat slab without drop, 3: increase in diaphragm’s rigidity with 250mm at regular intervals, 4: outrigger + increase in diaphragm’s rigidity with 250mm at regular intervals.