A fuzzy logic approach for daily site recording, schedule delay monitoring and progress forecasting

This thesis presents a fuzzy logic model that integrates daily site reporting of activity progress and delays with an updating and forecasting system for construction monitoring and control. The model developed assists in the analysis of the subsequent effects that delaying events may have on the project's completion date.; The following components comprise the fuzzy logic model: an as-built database integrated with project scheduling, a procedure to categorize delays, a method to estimate delay durations utilizing fuzzy logic, a technique to derive triangular membership functions, a procedure that updates the schedule, and a procedure that evaluates the effects of delays on the schedule and determines the likely consequences of delays on activity progress.; This thesis makes a contribution in construction delay analysis by developing a fuzzy logic model that provides a flexible and accurate tool that suits the imprecise nature of this field, and is valuable to the construction industry.