2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference


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Mr. Roghabadi Mohammadjavad, Concordia University (Presenter)
Dr. O Moselhi, Concordia University

This paper introduces a novel algorithm for optimized acceleration of repetitive projects considering crew work continuity. The model enables planners of this class of projects to identify the optimal/near optimal relaxation time of each activity that leads to minimized project duration and interruption time. The model computations are organized in three modules:(1) a scheduling module designed to generate early and late start schedules, which are utilized to identify the prioritized activities for relaxation; (2) an activity-relaxation total float module that considers the total number of days that the early finish date of each activity (i) in each unit (j) can be relaxed without delaying the early start of its successor activities and without impacting the project duration; (3) an intermediate scheduling module that relaxes each activity in all of its repetitive sections based on its defined activity-relaxation total float to generate a near optimal schedule that simultaneously minimize project duration and work interruptions. An application example of a repetitive construction project is analyzed to demonstrate the capabilities of the developed model in generating a near optimal schedule that account for targeted objectives of project duration and interruptions’ time.