Soil nailing is an in-situ earth retaining technique and it has been excessively used all over the world for the various slope stability applications. The efficiency of soil nail structures is the resultant of complex soil-structure interaction among its various components, namely, in-situ soil, stiff reinforcement (i.e nails) and the facing. Often rigorous computational techniques based on finite element or finite difference methods are employed to study the complex soil-structure interaction and to assess the performance and stability of soil nail structures. PLAXIS 2D has been comprehensively used for the study of soil nail structures (e.g. Shiu et al. 2006; Fan and Luo 2008).