A reinforced wall made by constructing offset at different elevation is called a multi-tiered wall. There are very few studies focusing on the behavior of multi-tiered walls. Also, the studies on the be-havior of tiered walls utilizing industrial waste such as fly ash are limited. In India, only 60% of the total 176.74 million tons of fly ash generated was utilized during the year 2015-2016. In the present study, an at-tempt is made to understand the behavior of fly ash wall using finite element method so that fly ash can be utilized for construction of multi-tiered wall. Finite element analysis based software PLAXIS 3D was used. Tiered wall was modelled using fly ash as a backfill material. The properties of fly ash were determined us-ing laboratory tests. Reinforced tiered walls were modelled by varying the number of tiers, offset distance and elastic stiffness of reinforcement. From the results it was inferred that fly ash acts as a good backfill material. Also, the reinforcement reduces the horizontal wall facia deformation. The behavior of wall was affected by number of tiers and offset distance. With increase in offset distance the factor of safety increases and horizontal displacement reduces. The displacement is also affected by number of tiers.
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