Seismic Performance of Multi Storey RC Buildings with Horizontal Irregularities

Multi storey reinforced concrete frame with horizontal irregularities are becoming common day by day. Site dimensions, architectural requirements and sometimes client requirements generally force the designer to adopt horizontal irregular buildings. In a city like Visakhapatnam which is highly vulnerable to wind forces, there is a need to study the effect of wind on horizontal irregular buildings. Although some literature available in this area. The conclusions are specific to a fixed wind speed and building height. Further the studies do not include the combined effect of wind and earth quake forces. The recent tremors in ad around Visakhapatnam there is a possibility that Visakhapatnam may be placed in earth quake zone-3 in near future. Hence this study aims at evaluating the performance of horizontal irregular buildings in earth quake zone -3 and earth quake zone -2 subjected to wind speeds ranging from 0-200 kmph. Here one regular building and 4 irregular buildings of same base area, same number of columns, and same spacing of columns are considered for this study.