International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 05 | July- 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1332 Seismic Response of RC Framed Structures Resting on Sloping Terrain Sindhurashmi B. M. 1 , Bhavani Shankar 2 1 PG Student, Department of Structural Engineering, Srinivas School of Engineering, Mangaluru, India 2 Assistant Professor, Department of Structural Engineering, Srinivas School of Engineering, Mangaluru, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Earthquakes are really nasty things, when earthquake was happened there was loss of lives, buildings damaged and even collapsed. Buildings constructed on the hilly regions show different structural configuration when compared to buildings constructed on flat ground. Structures on the hill slopes are unsymmetrical hence they grab large amount of shear forces and torsional moments, and also show uneven distribution due to differing column length. Stiffness is more in shorter columns, thus more force will be attracted by the shorter columns and are prone to more damage when subjected to earthquake [1]. This is the main reason for the damage during earthquake. In present study four models with different configurations are analysed using ETABS 2015 and the results in terms of story displacement, story drift, time period, story shear has been compared with step-back and step-back setback buildings and suitable configuration for hilly region has been suggested [2]. Key Words: step-back building, step-back setback building, equivalent static analysis, maximum story displacement, time period, story drift, story shear. 1. INTRODUCTION Increase in the population leads to shortage of the plain land for the construction and thus it leads to economic development of hilly terrains and hence building design, usage of material for construction and even the construction techniques should be reconsidered. Construction of buildings on sloping ground provides excellent views, natural drainage and also provides additional space from lower floor levels. Slopes are high in case of Himalayan territory, if landslide happens then there will be loss of thousands of lives and property [3]. There is great demand for construction of multi-story buildings on hill slope in and around cities due to real estate development in hilly areas [4]. Figure 1: Buildings on sloping ground. Past earthquakes happened in Sikkim (2011), Doda (2013) and Nepal (2015) caused more destruction of life and property. Earthquake appeared in Mexico city in the year 1985 also caused immense damage [5]. India is mainly divided into four zones depending on the intensity of earthquake (IS 1893 {Part 1}:2002). 1.1 Type of vertical irregularities At the initial planning stage it is very important to design the configuration of the building resting on the hilly region. Simple configuration which gives the good result can be adopted. Therefore it is very necessary to analyse the 3D behavior of the buildings by using ETABS. There are mainly two types of building configurations on a sloping ground. They are • Step-back building • Step-back setback building