In the master thesis the possibility of modifying the design of a dam intended to supply drinking water to the population is presented. Due to the consequences of climate change, water scarcity is expected to increase in the near future in water-scarce areas. The only permanent solution is to build large reservoirs to store water during the part of the year when water resources are abundant enough and to use this water during dry periods. All these facts pose major challenges for planners. One of the most important challenges is the location of dams, both from an environmental and from an implementation point of view. In this thesis, the possibility of modifying the existing design of a rockfill dam with a RCC dam was investigated. RCC technology combines all the properties of conventional vibrated concrete, such as mechanical resistance, durability, water resistance, safety and cost-effectiveness, offered by the construction technology of embankment dams. The thesis has positively answered all the questions raised, that it is technically possible and feasible to replace an embankment dam with a concrete gravity dam, as well as to use RCC technology in the construction of the dam, and has finally concluded that, from an economic and performance point of view, RCC technology is the recommended of all dam types compared for the case under consideration.
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