Analyse de la productivité et du coût du transport forestier. Deuxième partie: étude de l'influence des conditions d'utilisation sur les pertes énergétiques du système propulsif et établissement des forces de résistance dues au brassage de l'huile
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.
This report analyzes the economic worth of harvesting and hauling jack pine full trees to a central processing plant to recover conventional forest products at the same time as branches and tops for energy. The report summarizes results of winter and summer field tests of cut-and- skid and feller-forwarder harvesting methods. Results indicate that energy biomass recovered may be attractive where hauling occurs over private roads and oversized loads are allowed. Some scenarios are positive even when energy values are zero due to the high productivity of centralized equipment.
A forestry operation in northern Alberta constructs its temporary access roads with native, fine-grained materials and uses these roads during both frozen and unfrozen conditions. The log hauling fleet associated with this operation utilizes central tire inflation systems to reduce road damage and improve mobility. This first of two reports describes an evaluation of the design and construction of temporary access roads trafficked in the same year that they were constructed; quantifies grading maintenance savings resulting from the use of road surface compaction and optimized tire inflation pressures; and discusses the validation of a USDA Forest Service rutting model and its potential for use in other applications.
A forestry operation in northern Alberta constructs its temporary access roads with native, fine-grained materials and uses these roads during both frozen and unfrozen conditions. The log hauling fleet associated with this operation utilizes central tire inflation systems to reduce road damage and improve mobility. This second of three reports describes an evaluation of the design and construction of temporary access roads trafficked one year after construction; quantifies grading maintenance savings resulting from the use of road seasoning and optimized tire inflation pressures; and discusses the validation of a USDA Forest Service rutting model and its potential for use in other applications.
The majority of wood hauled by trucks commonly occurs during the winter months when forest access roads are frozen. The Forest Engineering Research Institute of Canada (FERIC) performed a study to explore how log transportation could be extended into the summer months when roads are not frozen. FERIC used the Opti-Grade system to compare truck travel speeds between the summer and winter operating months over a two-year period and to help identify variables affecting travel speeds.
