FERIC a évalué un débardeur à câble équipé d’un treuil à double tambour et d’une radiocommande dans des opérations de coupe partielle de feuillus. L’augmentation de productivité a atteint jusqu’à 32 % selon la technologie utilisée, et la baisse de perturbation du terrain jusqu’à 40%. L’occupation par les sentiers et les dommages aux arbres résiduels ont également diminué (de jusqu’à 53 % et 79 %, respectivement). Les opérateurs montaient dans la machine beaucoup moins souvent, d’où une amélioration de la sécurité. Les télécommandes sont rentables pour toutes les machines, mais les treuils à double tambour coûtent probablement trop cher pour être installés sur de vieilles machines.
The Forest Engineering Research Institute of Canada (FERIC) periodically publishes a guide that summarizes the maximum weights and dimensions for on-highway vehicle configurations hauling logs and operating under the British Columbia Commercial Transport Act Regulations. This latest guide supersedes all previous FERIC guides on this topic.
FERIC assessed a cable skidder with a dual-drum winch and radio remote control in hardwood partial-cutting operations. Productivity increased by up to 32% depending on the technology used, and ground disturbance decreased by up to 40%. Trail occupancy and damage to residual trees also decreased (by up to 53% and 79%, respectively). Operators entered the machine significantly fewer times, thereby improving safety. Remote controls are cost-effective for any machine, but dual-drum winches are probably too costly to install on older machines.
The Forest Engineering Research Institute of Canada (FERIC) examined the level of butt damage from felling with high-speed circular saws in three winter harvesting operations in Alberta and British Columbia. The location and extent of the butt damage on each damaged stem were recorded, and the impact of the butt damage in terms of loss of sawlog volume available for lumber manufacturing was projected. Factors influencing butt damage are discussed, and recommendations to reduce wood losses are made.
The Forest Engineering Research Institute of Canada (FERIC) evaluated wood chip recovery and productivity at Weyerhaeuser Company Limited's pulp mill in Prince Albert, Saskatchewan. Frozen and unfrozen hardwood and softwood logs were debarked and shipped over a range of butt diameters and lengths. This report summarizes the chip recovery, quality, and productivity, and provides recommendations on how the operation and chip recovery can be improved.
The Forest Engineering Research Institute of Canada (FERIC) surveyed users of closed-bottom corrugated-steel embedded culverts within British Columbia and visited selected sites. This report presents information about the installations visited, including the installation procedures and costs. This report also provides suggestions for the implementation of future embedded culverts.
The Forest Engineering Research Institute of Canada (FERIC) studied the feasibility of applying training strategies to bucking, and marking following falling but prior to yarding, to increase the amount of coarse woody debris retained in an old-growth stand. FERIC also assessed whether this method was an economically feasible way to reduce delivery of non-merchantable wood to log sortyards and therefore reduce the costs associated with yarding, loading, trucking, and disposing of non-merchantable wood. FERIC's study was part of a larger project initiated by the B.C. Ministry of Forests and Weyerhaeuser Company Limited on coarse woody debris retention.
A commercial thinning study in mule deer winter range was performed in the interior of British Columbia. The commercial thinning was followed by a pre-commercial thinning operation to create a clumpy, multi-storied stand with gaps for regeneration. The Forest Engineering Research Institute of Canada (FERIC) monitored the commercial thinning and pre-commercial thinning operations and determined the costs and productivities of these phases.
FERIC a évalué la performance des lampes au xénon en récolte forestière comme alternative aux lampes halogène. Bien que plus coûteuses, les lampes au xénon peuvent être avantageuses car leur éclairage est plus intense et plus uniforme ce qui facilite la navigation en forêt lors d’opérations de nuit, notamment en coupe partielle. Le rapport présente également quelques pratiques à adopter concernant tout système d’éclairage.
FERIC evaluated the performance of xenon lights to determine their suitability as an alternative to halogen lights in harvesting operations. Although more expensive, xenon lights provide more intense and more uniform lighting, which facilitates navigation in the forest during night operations, particularly in partial cutting. The report also presents some practices to adopt with any lighting system.