Abstract
This paper presents an optimization approach to minimizing log yard round wood transporta- tion time for a medium sized hardwood sawmill. The log yard, which has to ensure a smooth rawmaterialsupplytotheentir eproductionprocess, �isthefirstprocessingstepinasawmill. � The log yard also serves as an internal round wood sorting and storing capacity. Thus, an opti- mal assignment of ejection boxes, storage boxes and feeding carriages is required to minimize transportation time at a log yard. The main contribution of this paper is to present an integrated approach which simultaneously takes into account log transportation time, storage capacity and yardcranedeployment. �Theapproachisbasedontwosteps: �a) �definingstoragespacesperbatch � and calculating distances and b) determining optimum box assignments in the log yard in order to minimize overall transportation distance. The solution in step b) is compared with the results obtained by random box assignment as well as a spreadsheet based planning method. We have beenabletoshowthatourapproachismuchmoreflexibleandresultsaremorethan �16 �percent � better than the corresponding real life solution.
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