INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET) E-ISSN: 2395-0056 VOLUME: 09 ISSUE: 02 | FEB 2022 WWW.IRJET.NET P-ISSN: 2395-0072 © 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 528 Seismic Performance of L-Shape, U-Shape RC Buildings having Shear Wall and Bracing at Corner Badri Adhikari 1 , Tek Raj Gyawali 2 , Rajendra Aryal 3 1 Lecturer, School of Engineering, Pokhara University, Gandaki, Nepal 2 Professor, School of Engineering, Pokhara University, Gandaki, Nepal 3 Lecturer, School of Engineering, Pokhara University, Gandaki, Nepal ------------------------------------------------------------------------***----------------------------------------------------------------------- Abstract: L-shape and U-shape buildings are more functional for natural light and fresh air, and the best architectural view[4]. Hospitals, schools, offices, and commercial buildings are normally made L-shape and U shape in Nepal [10]. As per the Indian and Nepal building code, it is mandatory to make the seismic joint in irregular buildings i.e. L-shape and U-shape buildings [1]. However, in this research work, the study was made for the effectiveness of shear walls and Reinforce concrete bracing systems in an irregular building in comparison with regular bare frames [7]. Response spectrum analysis and time history analysis were performed using ETABS software based on IS code for this study [1], [23], [19]. Eleven different models (Rectangular, L-shape, and U-shape building) having floor area constant were taken for this analysis. In an analysis, we assume that all model areas located in seismic zone V as per Indian code and soil type-II were taken. Finally, an earthquake load was for different cases of bare frame, shear wall, and bracing system. Lateral displacement; inter-story drift, Story stiffness, overturning moment, and base shear were calculated in all the cases. Finally, the result showed that L-shape and U-shape buildings with shear wall and bracing system at corners have 0.11 timeless displacement and 0.12 times drift than rectangular bare frame building structures. Similarly 1.78 times more story stiffness, story shear, over toning moment than rectangular bare frame building structure. Among this study, it is concluded that the U-shape having a shear wall at the corner has better seismic performance than other model buildings. L-Shape and U-shaped building having a Shear wall or Reinforce concrete bracing system at the corner has better seismic performance than the bare frame rectangular building. Keywords: Seismic performance, Shear wall, Reinforce concrete Bracing, Irregular shape building. 1. INTRODUCTION Nepal is a highly earthquake-prone zone. Therefore, it is difficult to make buildings in irregular shapes as per Indian [1] and Nepalese building cords [5]. The population is increasing at an alarming rate everywhere in Nepalese city so the available land space in such centers is limited to overcome this problem some time we need to build irregular plan building likewise L-shape plan or U-shape plan. Mainly Hospital School, University Office and multistory commercial building built in plan irregular shape Seismic join in L-shape and U-shape block is mandatory as per Indian stander building code [1]. To overcome this problem this study is most important. This sturdy help to overcome the above problem. 1.1 Objective of the Study To determine seismic performance of RC frame regular and irregular plan building by using finite element method-based software. 2. Modeling of the Building All models (i.e. Rectangular, L-shape, and U-shape buildings) have the same plinth area, beam size, column size, and story height. All models were made bear frame, shear lock at every corner, and RC bracing at every corner respectively. As shown in the below fig., the original size of the building ware taken 30mX25m floor area and a total 13.5 height in four-story. The entire model was modeling in ETABS 2017 Version 17.0.1. For this seismic analysis.