C.M. Ravi Kumar, M. B. Sreenivasa, Anil Kumar, M. Vijay Sekhar Reddy / International Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 www.ijera.com Vol. 3, Issue 3, May-Jun 2013, pp.646-652 646 | P a g e Seismic Vulnerability Assessment Of Rc Buildings With Shear Wall C.M. Ravi Kumar 1 , M. B. Sreenivasa 2 , Anil Kumar 3 , M. Vijay Sekhar Reddy 4 1 Assistant Professor, Department of Civil Engineering, Visvesvaraya Technological University BDT College of Engineering, Davangere, Karnataka, India 2 Department of Civil Engineering, Alvas Institute of Technology, Moodbidri, Karnataka, India. 3 Research Scholar, Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, Karnataka, India.. 4 HOD, Department of Civil Engineering, Srikalahasti Institute of Technology, Srikalahasti, Andra Pradesha, India. Abstract Reinforced concrete multi-storied buildings are very complex to model as structural systems for analysis. The current version of the IS: 1893-2002 requires that practically all multi-storeyed buildings be analyzed as three-dimensional systems. This is due to the fact that the buildings have generally irregularities in plan or elevation or in both. Seismic codes distinguish between regular and irregular configurations, and it is the latter that the irregularity may have a detrimental influence on the effectiveness and on the building seismic performance itself. The present analytical investigation proposes, discusses, and highlights the seismic performance of RC (Reinforced Concrete) buildings having dual system with emphasis on various case studies. The study includes seismic vulnerability assessment of RC buildings without shear wall, with shear wall at centre, shear wall at diagonal corners, shear wall at mid along X-direction, and shear wall at mid along Y-direction, lastly shear wall at mid along X&Y-directions. Keywords: Seismic performance, evaluation, irregular RC building and shear wall,dual system 1. Introduction It is a known fact that the Globe is facing a threat of natural disasters from time to time. With particular records based on earthquake occurrence, the consequences are loss of human lives and destruction of properties, which ultimately affects the natural economy. The occurrence of an earthquake cannot be predicted and prevented but the preparedness of the structures to resist earthquake forces become more important. However, more recently, several destructive earthquakes, including the 1999 Athens (Greece) earthquake, the 1999 İzmit and Düzce earthquakes (Turkey), 1999 Chi Chi (Taiwan) earthquake, 2001 Bhuj (India) earthquake, and the 2003 Boumerdes (Algeria) earthquake, have given more insights to performance of RC frame constructions. These earthquakes are like a wake-up call to enforce building and seismic codes, making building insurance compulsory along with the use of quality material and skilled workmanship. India has experienced destructive earthquakes throughout its history. Most notable events of major earthquakes in India since 1819 to 2001, in 1819 the epicenter was Kutch, Gujarat and later in 2001 it was at Bhuj, Gujarat. In many respects, including seismological and geotechnical, the January 26, 2001 earthquake was a case of history repeating itself 182 years later and has made the engineering community in India aware of the need of seismic evaluation and retrofitting of existing structures. Bhuj earthquake of 26 January 2001 caused 14,000 casualties. Main reason for such huge casualties is low earthquake awareness and poor construction practices, highlighting inherent earthquake safe character. Based on the technology advancement and knowledge gained after earthquake occurrences, the seismic code is usually revised. Last revision of IS 1893 (Criteria for earthquake resistant design of structures) was done in 2002 after a long gap of about 18years. Some new clauses were included and some old provisions were updated. Assuming that concerned authorities will take enough steps for code compliance and the structures that are being constructed are earthquake resistant. Keeping the view of constant revision of the seismic zones in India, lack of proper design and detailing of structures against earthquake. Earthquake performance of RC bare frame has been well documented in the past. Also, damage patterns in reinforced concrete frames during the past earthquakes have been extensively studied. But now a day‟s need and demand of the latest generation and growing population has made the architects or engineers inevitable towards planning of irregular configurations. Some of the poor planning and construction practices of multi-storied buildings in Peninsular India in particular, which lead to irregularities in plan and elevation of the buildings. If the configuration is good the seismic