An optimization-based model for maximizing the benefits of fast-track construction activities

Y Khoueiry, I Srour and A Yassine
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Y Khoueiry: American University of Beirut, Beirut, Lebanon
I Srour: American University of Beirut, Beirut, Lebanon
A Yassine: American University of Beirut, Beirut, Lebanon

Journal of the Operational Research Society, 2013, vol. 64, issue 8, 1137-1146

Abstract: Fast-track construction projects have become more popular in recent years in response to growing industry demand. By allowing downstream construction activities to start with incomplete information from upstream design activities, fast-tracking (through overlapping) allows for shorter project duration at the expense of potential rework. This leaves practitioners with the challenge of determining the optimal fast-tracking strategy to meet project schedule requirements while avoiding excessive amounts of rework. This paper presents an optimization-based model that serves as a decision support tool in scheduling fast-track construction activities. The model takes into consideration information exchange between upstream and downstream activities and uses the concepts of sensitivity and evolution to maximize the net benefits of fast-tracking. The model is illustrated on an ongoing construction project, which was analysed under various overlapping scenarios. The results indicate substantial time savings depending on the speed of evolution and sensitivity. The project schedule can be shortened by up to 50 days without causing excessive amounts of rework.

Date: 2013
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