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Forests have become more and more important sustainable sources in the world. Due to the excessively demands for wood raw material, in the harvesting process, it is obligatory to obtain of wood without to suffer losses in that perspective of qualitative and quantitative.
There are also two stages in the transportation of forest products. The first...
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Context 1
... production, the productivity and the labour consumption for the various cable cranes depend on the terrain conditions and tree dimensions and big variations in productivity values exist (Samset 1985). Productivities of Koller K300 and average shift times were calculated as shown in Table 4. Usually the productivity for uphill cable crane yading is 15-25 % higher than downhill yarding. ...