OPTIMUM ROAD SPACING OF FORWARDING OPERATIONS: A CASE STUDY IN SOUTHERN AUSTRIA

Forwarders are common machines in the cut to length system. The optimum road spacing is important factor in logging planning which was studied in this paper. The regression model for predicting the time of forwarding was developed using 40 working cycles of Ponsse Bufallo Dual forwarder which were collected in Steiermark in Southern Austria. A mathematical model was developed to minimize the sum of roading and forwarding costs. Based on minimizing the sum of the roading and forwarding costs, for one way skidding, the optimum road spacing was estimated as 503 m and road density of 19.9. The optimal average forwarding distance was estimated as 340 m while the actual average forwarding distance was 169 m.

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