A Model of Turn-Time Requirements in a Highlead Yarding System

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A theoretical model is developed for specifying regression equations for the time requirements of four yarding elements in the highlead yarding system. The equations are estimated from sample data taken from a commercial logging operation in the Southern Appalachians. The hook and unhook equations proved to be the most difficult to specify and estimate. The outhaul and inhaul times were found to be a function of the operating gear, the slope distance to the log, and the work done on the cable and log. Forest Sci. 29:641-652.

Keywords: Logging; timber harvesting

Document Type: Journal Article

Affiliations: Department of Agricultural Engineering at Purdue University

Publication date: September 1, 1983

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  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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