“…Issues related to the design and factors affecting the performance of reinforced soil have been addressed by many researches in recent times (e.g. Bathurst et al, 2005;Park and Tan, 2005;Skinner and Rowe, 2005b;Al Hattamleh and Muhunthan, 2006;Hufenus et al, 2006;Nouri et al, 2006;Chen and Chiu, 2008). Also, the behavior of reinforced earth structures has been comprehensively studied through field observations of full-scale physical model, laboratory model testing, and numerical simulation (Bergado et al, 1995(Bergado et al, , 2000(Bergado et al, , 2003Frankowska, 2005;Varuso et al, 2005;Bergado and Teerawattanasuk, 2007;Bathurst, 2005, 2006;Ling and Leshchinsky, 2003;Won and Kim, 2007).…”