Graduate Thesis Or Dissertation
 

A quantitative index for evaluation of plant layout alternatives

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  • The purpose of this study is to develop a workable plant layout evaluation technique incorporating adequate definitive measures of intangible plant layout considerations. A summary and critique is given of existing evaluation methods. A quantitative evaluation index (QEI) is proposed to remedy the described deficiencies. The proposed index can be described by the following formula: Quantitative Evaluation Index (QEI) = α (D') + β (L') + γ (M') + σ(I') + [phi] (P') + θ (F'), where D' = material handling distance factor, L' = location relationship factor, M' = related cost factor, I' = information flow factor, P' = performance factor, F' = flexibility factor, and α, β, γ, σ, [phi], and θ are relative weighting factors. The factors D', L', M', I', P', and F' are ratios representing improvement realized over an existing or reference layout. Both present and probabalistic future conditions are included, and methods of quantification of intangibles are described. In addition to the obvious industrial applications, the index is also useful for academic exercises. A sophisticated plant layout exercise was developed and tested in a classroom atmosphere. The complete exercise, its evaluation, and suggestions for further development are included in the thesis.
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