<![CDATA[Facility-layout decisions influence the physical path followed by materials, workers, and information in manufacturing systems. This study reports a reproducible descriptive assessment of supplied before-and-after distance evidence for an eight-department light-steel manufacturing setting. The source set contains two directed interdepartmental distance matrices and eight material-flow route records. The analysis deliberately treats these as separate evidence layers because every route record differs from the corresponding origin-destination matrix value. The matrix layer therefore characterizes the complete set of 56 non-diagonal directed department pairs, whereas the route layer characterizes only the listed material movements. For the matrix layer, the sum of directed distances decreases from 1,936 m to 1,124 m, a reduction of 812 m or 41.94%; all 56 pairs decrease. For the route layer, the listed total decreases from 3,778 m to 1,799 m, a saving of 1,979 m or 52.38%. The cutting-to-forming route contributes the largest listed saving, at 528 m or 26.68% of the route total. Route frequencies indicate that cutting has the greatest inbound burden, while raw-material storage has the greatest outbound burden. The paper provides a transparent calculation trail, four distinct source-derived visualizations, and a direct document-generation workflow. Its contribution is not an optimization-algorithm comparison or an implementation evaluation. Because the supplied data do not contain layout coordinates, department areas, handling costs, time studies, production output, or implementation records, the results must be read as descriptive distance evidence only. They identify priority movements and provide a defensible baseline for a subsequent layout-design study that can collect the missing engineering and operational variables]]>
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