Efficient Repetitive Scheduling for High-Rise Construction |
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Authors: | Tarek Hegazy Ehab Kamarah |
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Affiliation: | 1Professor, Civil Engineering Dept., Univ. of Waterloo, Waterloo, Ontario, N2L 3G1 Canada. E-mail: tarek@uwaterloo.ca 2Ph.D. Student, Civil Engineering Dept., Univ. of Waterloo, Waterloo, Ontario, N2L 3G1 Canada. E-mail: eng?kamarah@hotmail.com
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Abstract: | A new scheduling and cost optimization model for high-rise construction is presented in this paper. The model has been formulated with a unique representation of the activities that form the building’s structural core, which need to be dealt with carefully to avoid scheduling errors. In addition, the model has been formulated incorporating: (1) the logical relationships within each floor and among floors of varying sizes; (2) work continuity and crew synchronization; (3) optional estimates and seasonal productivity factors; (4) prespecified deadline, work interruptions, and resource constraints; and (5) a genetic algorithms-based cost optimization that determines the combination of construction methods, number of crews, and work interruptions that meet schedule constraints. A computer prototype was then developed to demonstrate the model’s usefulness on a case study high-rise project. The model is useful to both researchers and practitioners as it better suits the environment of high-rise construction, avoids scheduling errors, optimizes cost, and provides a legible presentation of resource assignments and progress data. |
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Keywords: | Scheduling Buildings high-rise Construction management Computer applications |
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