J. For. Sci., 2008, 54(4):183-188 | DOI: 10.17221/5/2008-JFS

Time study and skidding capacity of the wheeled skidder Timberjack 450C in Caspian forests

F. K. Behjou1, B. Majnounian1, M. Namiranian1, J. Dvořák2
1 Faculty of Natural Resources, University of Tehran, Tehran, Iran
2 Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic

This study was carried out in a steep and difficult terrain. Trees were logged downhill to the landing by a wheeled skidder Timberjack 450C. Selection cutting was performed on a 66-hectare tract with an average slope of 30%. The elemental time study method was applied to develop the skidding time predicting model. In this study 43 working cycles were included. The skidding cycle time was mainly affected by skidding distance, winching distance and interaction between skidding distance and slope. The gross and net production rate was 20.51 and 22.93 m3/h, respectively. The unit cost considering the gross and net production rate was 6.31 and 6.22 USD/m3, respectively.

Keywords: wheeled skidder Timberjack 450C; working efficiency; init cost; skidding

Published: April 30, 2008  Show citation

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Behjou FK, Majnounian B, Namiranian M, Dvořák J. Time study and skidding capacity of the wheeled skidder Timberjack 450C in Caspian forests. J. For. Sci. 2008;54(4):183-188. doi: 10.17221/5/2008-JFS.
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