CRITICAL PATHS IN A FUZZY CONSTRUCTION PROJECT NETWORK

The competition and development at various field is the current feature in our time. Construction sector is the most important of these areas, construction projects suffer from delay and uncertainty in the project completion time. The major reasons behind this situation are lack of modern planning techniques and uncertainty in the estimation of activity durations. The Critical Path Method (CPM) is an important technique for the planning and monitoring of construction project. Duration for each activity must be defined clearly for the successful implementation of Critical Path Method. Nevertheless, in practical states activity duration cannot be estimated in an accurate means due to many cases. Poor experience, lack of skilled labour, equipment oldness, market volatility, weather conditions, cash flow and so on are reasons that lead to unrealistic estimation of project activity durations. The researcher used fuzzy logic to overcome the uncertainty of estimating activity durations and present a new method to find the duration of activities under uncertainty situation