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Journal of Applied Sciences
Year: 2008  |  Volume: 8  |  Issue: 22  |  Page No.: 4159 - 4165

Time-Cost Trade-off Problem in Construction Project Management, Based on Fuzzy Logic

R. Abbasnia, A. Afshar and E. Eshtehardian    

Abstract: In this study, a new approach has been investigated in solving time-cost trade off problem, because of uncertainties which affect on activity cost. Fuzzy logic theory is employed to consider affecting uncertainties in total direct and indirect cost of a construction project. Non-dominated Sorting Genetic Algorithm (NSGA), a multi objective optimization algorithm, is applied to provide a trade-off between time and total cost. Project manager can also have different non-dominated solutions or pareto solutions which are dependent on his measure of accepted risk through applying α cuts methods in fuzzy logic theory. The proposed model leads the decision maker to select the desirable pareto front solution through acceptable value of α cut.

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