FERIC sampled butt-damage on 25 interior felling operations. One hand- faller, 4 shear machines and 20 non-shear machines were sampled. Lumber trim losses (2 X 6-inch basis) to remove damage were predicted as a percentage of total lumber content in the tree. Predicted losses were highest for the shear machines, substantially lower for most non-shear machines and negligible for the hand-faller.
This report summarizes four years of studies on wood-damage levels measured after the felling phase. Shears, hand fallers, and non-shear devices were examined. The report ranks the methods by groups, and identifies factors common to each group. Certain design features were found to be important in minimizing wood damage.
The relationship between the forest, the soil and the harvesting equipment must be understood if forest companies are to achieve sustainable and environmentally acceptable forest practices. As the soil is both the pavement over which harvesting and site preparation equipment must travel and the growing medium for future harvests, the forest industry must understand the impact of equipment activity on future fibre supply. To provide information on the interaction between forest equipment and the soils, FERIC organized a workshop for forest operations and agency staff, and contractors. More than 80 people attended the workshop that was held in Whitecourt, Alberta on February 26th, 1999. The focus of the presentations was to provide the audience with information and basic soil properties, soil mechanics and vehicle dynamics, and the effects of compaction on soil physical properties. In addition, other presentations included summaries of studies undertaken in western Canada on the impacts of felling and skidding equipment on forest soils, and impacts of harvesting activities and deciduous and coniferous regeneration. Finally, management strategies for minimizing soil degradation were discussed. These Proceedings summarize the presentations during the workshop.
The Forest Engineering Research Institute of Canada (FERIC) studied whether Just-In-Time (JIT) concepts were being applied to log delivery procedures within the forest industry in western Canada. This report provides examples of forest companies using JIT concepts in their inventory management procedures, and identifies procedures to assist companies with implementing JIT concepts.