Finance-based CPM/LOB scheduling of projects with repetitive non-serial activities

Mohammed Mubashir Ali and Ashraf Elazouni

Construction Management and Economics, 2009, vol. 27, issue 9, 839-856

Abstract: Projects of repetitive non-serial activities constitute a major category of construction projects which can be scheduled more conveniently using the line of balance (LOB) technique. Generally, scheduling activities such that the expenditures are always in balance with the available cash is a must to devise financially feasible schedules. The objective is to integrate a CPM/LOB model for a project of repetitive non-serial activities with a cash flow model and utilize the integrated model to devise financially feasible schedules. The genetic algorithms (GAs) technique is employed to maximize the profit at the end of the project under the constraints of available cash. The optimization of the integrated models was demonstrated using an example project of 15 activities carried out at five units. The CPM/LOB model was validated against the results of a dynamic programming model in the literature and further by conducting a sensitivity analysis of the results of the integrated model. Finally, the model offers an effective financial planning tool for projects of repetitive non-serial activities.

Keywords: Scheduling; repetitive construction; genetic algorithms; cash flow management; line of balance (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1080/01446190903191764

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