Machines and techniques for skyline yarding of smallwood
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Machines and techniques for skyline yarding of smallwood

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Published by Forest Research Laboratory, School of Forestry, Oregon State University in Corvallis, Or .
Written in English


  • Logging, Skyline.,
  • Logging -- Machinery.

Book details:

Edition Notes

StatementL.D. Kellogg.
SeriesResearch bulletin / Forest Research Laboratory, School of Forestry, Oregon State University -- 36., Research bulletin (Oregon State University. Forest Research Laboratory) -- 36.
ContributionsOregon State University. Forest Research Laboratory.
The Physical Object
Pagination15 p. :
Number of Pages15
ID Numbers
Open LibraryOL14212350M

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Abstract. Research on skyline machines and techniques currently available for\ud yarding smallwood is reviewed. Three categories of machines are\ud discussed: used yarders (with a low initial cost) adaptable to\ud smallwood, new and versatile yarders (with a high Initial cost)\ud manufactured in the United States, and new, foreign-built yarders\ud (with a low initial cost) specifically. Looking for cells which can be reached in skyline yarding. Figure 3. Aspect checking of skyline yarding path. If the intervisibility condition between two cells is not fulfilled, a different signal value will be assigned to the cell, indicating that skyline extraction is not possible and a tree jack must be used for the skyline extraction path. A standing skyline in a gravity-fed (shotgun) configuration with a motorized carriage is the most common yarding system used in the region. Carriage outhaul works by gravity. The slackline configuration requires a haulback, using a three-drum yarder, with the additional line attached to the rear of the carriage. Work Studies in Skyline Thinning Operations – Chainsaw Felling & Skyline Yarding • Research Data collection –Unit preparation by the land owner (Forest Service) –Unit layout by contractors –Harvesting productivity and costs Skyline Carriages Harvesting Techniques.

PRODUCTIVITY, COSTS, AND OPTIMAL SPACING OF SKYLINE CORRIDORS OF TWO C A B L E YARDING SYSTEMS IN PARTIAL CUTTING OF SECOND-GROWTH FORESTS OF C O A S T A L BRITISH COLUMBIA by D A G RUTHERFORD, R.P.F. B. S.F, University of British Columbia, A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF Author: Dag Rutherford.   Author of Terminology of ground-based mechanized logging in the Pacific Northwest, Skyline thinning a western hemlock-Sitka spruce stand, Thinning young timber stands in mountainous terrain, Machines and techniques for skyline yarding of smallwood, Mechanized felling in the Pacific Northwest, Increasing the productivity of a small yarder, Logging planning and layout costs for . The “carriage” machine is a log-mover that rides on an aerially-suspended cable “skyline”. Most common in Oregon is the radio-controlled, motorized carriage (called “car”); its’ movements are controlled by workers with radio devices (called “bugs”), and audible signals (called “tooters”). This form of hauling, or "yarding," was called ground-lead logging, because logs were dragged on the ground or along skid roads. It was the main system used for almost 30 years. In the Comox Logging Co imported the first of half a dozen Lidgerwood skidders, huge machines designed for logging Louisiana swamps.

skidding machine itself can operate on moderate slopes if the soil is stable. Removing trees from steep slopes or lesser slopes on easily erodible soils calls for the capability to winch logs up or down slopes while limiting the machine's movement to skid roads, ridge tops, etc. where soil disturbance is minimized and erosion controllable. small mechanized yarding THERE IS A growing demand for medium-sized, towable logging arches. At least two are available that are designed to be pulled by ATVs (All-Terrain Vehicles -- 4-wheel drive, cc, which sometimes can be fitted with special hitches, . Optimal road spacing of cable yarding using a tower yarder in Southern Austria Article (PDF Available) in European Journal of Forest Research (3) May with Reads. Watershed Management Timber Harvesting Forest Road Prescribe Fire Harvest System These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.