Depend up on the above justification the maximum core width is controlled by stability and availability of construction material. In embankment dam design, if there is no adequate borrow material area around the project, earth dams with impervious cores are constructed instead of using inclined upstream vertical core, using impervious vertical core at the center of the dam is much more desirable since the contact pressure between the core and foundation is higher than the previous which is used to prevent leakage, greater stability under earthquake loading and better access for remedial seepage control (Yasar, 2010). However, an inclined upstream core allows the downstream


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