| Summary: | Facility layout is one of the factors that affect the efficiency of production activities. It can
be defined as the grouping of equipments and operations in afactory for the greatest degree of
efficiency. Difference functions of each department of a company will provide a number of
possible locations or place positions. Each department has a wide requirement of process
activities and relationship with other departments. The problem is how to determine the
composition of inter-departmental decent considering the cost, flow, and distance. Researchers
have developed models on multi-floor facility. However, the models have been focused on
manufacturing industry and less appropriate to be applied in the service industry. This is
because the model does not consider aspects that are commonly encountered in service
industries such as the number of employees in a department that implies to the minimum space
requirement. Given the limitations of the previous models, this study aims to develop a model of
multi-floor facility in the service industry. The optimality of the layout is based on the costs
incurred in the flow of movement among departments with respect to the activity flow and
distance among departments. To examine the model a numerical example is presented. In
addition, a sensitivity analysis was done to test the robustness of the model. The result showed
that the model developed in this study is robust and feasible to solve problem of multi-floor
facility in the service industry.
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