http://www.iaeme.com/IJCIET/index.asp 113 editor@iaeme.com International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 1, Jan-Feb 2016, pp. 113-127, Article ID: IJCIET_07_01_010 Available online at http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=7&IType=1 Journal Impact Factor (2016): 9.7820 (Calculated by GISI) www.jifactor.com ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication NONLINEAR BEHAVIOR AND FRAGILITY ASSESSMENT OF MULTI-STORY CONFINED MASONRY WALLS UNDER CYCLIC LOADS Mohamed Said and Mosaad El-Diasity Assistant Prof., Civil Eng. Dept., Shoubra Faculty of Eng., Benha University, Egypt Osama Kamal Professor, Shoubra Faculty of Engineering, Benha University, Egypt Hussein Okail Assistant Professor, Civil Eng. Dept., Ain Shams University, Egypt ABSTRACT This paper presents numerical study analysis and the results of confined masonry walls. The studied parameters were number of bays, number of stories, and openings of walls. It was showed that the window opening could reduce the lateral capacity of the solid by ranges of 7-27% for one bay wall, 6-30% for two bay walls, and 11-26% for three bays wall. The door opening could reduce the solid wall capacity by ranges of 11-42% for one bay wall, 13-49% for two bay walls, and 23-44% for three bays wall. This paper presents the most significant contributions in the field of vulnerability assessment. It is shown that methodology is very useful for assessing the seismic vulnerability of confined masonry structures for estimating the cyclic load induced economic losses based on an engineering demand parameter closely related to structural damage. Keywords: Confined Masonry, Seismic Behavior, Cyclic loading and Fragility Cite this Article: Mohamed Said, Osama Kamal, Mosaad El-Diasity and Hussein Okail. Nonlinear Behavior and Fragility Assessment of Multi-Story Confined Masonry Walls under Cyclic Loads. International Journal of Civil Engineering and Technology, 7(1), 2016, pp. 113-127. http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=7&IType=1