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Dissatisfaction among involved parties regarding the ways of cost allocation is ordinary in the joint ventures, since each party attempts to get more interest caused by making the coalition. Various cost allocation methods such as proportional methods, some methods in cooperative game theory approach and etc have been used for the purpose of cost sharing in the joint projects. In this study the Nucleolus, Shapley value and SCRB as the cost sharing concepts in game theory approach have been used to investigate their effectiveness in fairly joint cost allocation between parties involved in constructing the joint water supply system. Then the results derived from these methods have been compared with the results of the traditional proportional to population and demand methods. The results indicated that the proportional methods may not lead to a fairly cost allocation while the Nucleolus, SCRB and the Shapley value methods can establish adequate incentive for cooperation.

Concrete is the main material used in most of structures in the world. The use of high strength and high performance concrete to overcome deterioration due to static and dynamic load and some environmental burden in different situation such as chloride attack, sulphate attack and etc, is increasing worldwide. Achieving to a concrete with a high quality and saving in amount of material used for producing the concrete need a proper mix design method taken into account. DOE method is considered as an effective and substantial method in implementing the concrete mix design. In this paper, specifications and all mix design calculation steps using DOE method in achieving a high strength and high performance concrete for a tall building in a coastal environment based on three concrete cubes specimens produced in the lab, are investigated. The 7 and 14 day compressive strength test were implemented on the concrete cubes. At the end, it concluded that the specified compressive strength (45 N/mm2) can be achieved on the 28th day based on DOE method.