Facility layout design involves a systematic physical arrangement of different departments, work stations, machines, equipments, storage areas and common areas in a manufacturing industry. In today's competitive global environment, the optimum facility layout has become an effective tool in cost reduction by enhancing the productivity. It has become very essential to have a well organised plant layout for all available resources in an optimum manner to achieve the maximum returns from the

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... ty of facilities. To achieve the optimisation objectives a lot of techniques are developed by many researchers in the domain area. The objective of this paper is to review the contributions in the field not only for plant layout but re-layout also.