Algorithm for Determining Controlling Path Considering Resource Continuity

Abstract

Scheduling of construction projects that have multiple units, wherein activities repeat from one unit to another, always represent a major challenge to project managers. These projects require schedules that ensure the uninterrupted usage of resources from an activity in one unit to the similar activity in the next unit and maintaining logic constraints at the same time. The scheduling method presented in this paper considers both logic and resource continuity constraints. The method utilizes the critical path method network of a single unit. Start-to-start and finish-to-finish relationships are used. Constant activity production rate is assumed. The proposed approach determines the controlling path (logically and resource critical units) in a simplified way. To automate the proposed algorithm, a macroprogram has been written on commercial scheduling software. Details of the model development and implementation are described, and an example application is presented to validate the proposed approach. The advantages, limitations, and future extensions of the proposed approach are then discussed.

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