MODELING EXCAVATION OPERATION IN BUILDING PROJECTS - A SIMULATION APPROACH

Emad E. Elbeltagi, Hossam H. Mohamed, Dhaheer A. Thabet

Abstract


Pile foundations, loading area layout, excavation depth, haul distance, operator skills, and other factors, complicate the estimation of the production rates and unit cost of excavation operation. Simulation can be used as a tool to assist construction engineers in analyzing and designing construction operations. The objective of this paper is to develop a simulation model for the excavation operation in building construction to provide planner and estimators with a powerful tool for predicting the production rates and unit cost. Moreover, this model facilitates the investigation of resources’ combination effect on this operation. For this purpose, the model was developed using realistic activities durations. Therefore, full-time observations were conducted to collect these data from several building projects constructed in the city of Alexandria (Egypt). Based on the results, the impact of resources’ combination and variation of these resources on the production rates and unit costs are discussed. In conclusion, the results indicate that the benefits of simulation would be maximized if it were used during the planning phase, as it will affect the selection of the suitable combination of equipment

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