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Productivity
of timber extraction by Urus MIII cable crane from selective
spruce forests
Tolga Ozturk
Department of Forest construction and Transportation,
Faculty of Forestry, Istanbul University, 34473, Bahcekoy /
Istanbul , Turkey. E-mail:
tozturk@istanbul.edu.tr. Tel:
+90 212 2261100. Fax: +90 212 2261113.
Accepted 1 August, 2009 |
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The
purpose of this study is to investigate the productivity of
the Urus MIII cable crane during yarding of spruce timber
from spruce stands in North Eastern Turkey. Cable crane
productivity is determined by using the methods of work and
time study. The research concludes that some working
characteristics of the Urus MIII cable crane such as
transportation speed of the carriage (loaded and unloaded),
load volume, time consumptions of felling area, fuel
consumptions, productivity of the cable crane and transport
distance have an absolute impact on the productivity of the
cable crane. In this study, for average 210 meters
transporting distance, productivity of Urus MIII cable crane
was found 10.08 m³/hr on two different corridors. The
average fuel consumption was 3.5 - 4.0 liters per operating
hour of the Urus MIII cable crane. Costs of Urus MIII cable
crane are calculated to 4.6 $/m³.
Key
words:
Urus
MIII cable crane, carriage, timber production, time study. |
