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A heuristic scheduling routine was developed in this study for scheduling the activities of a project-network. The objectives of the scheduling process are to minimize the daily allocation of resources, satisfy constraints on the availability of resources, and achieve total completion of the project within a given due date. Since this type of a problem is a large combinatorial one, an analytical solution is almost impossible, and always impractical, even for small project-networks. The scheduling procedure developed in this study consists of a series of computations and heuristic decisions based on functional properties of the networks and assembled into a logical sequence of steps designed to originate successive schedules that converge toward the optimal or near-optimal solution. The heuristic scheduli:Q.g routine was tested with several artificially prepared project-networks for which the optimal solutions were already kriovm. Either the originally prepared optimal schedules or resource equivalent ones were obtained. The solution of this problem will find real-life applications in the maintenance functions of varying industrial organizations, and in the construction industry among others.

A Heuristic Routine for Project-Network Scheduling with Resource Constraints