A computer program package to estimate cable yarding
payload capability was made. The package was intended to
expand applicability of existing packages and to be user
friendly. It has six system options: live skyline, standing
skyline, running skyline, slackline, multispan and highlead.
In the standing skyline and multispan analyses, load...
The prescription presented covers two stands of timber, designated Stands A and B, owned by the Wolf family. The owners seek a management plan which will coordinate activities between the stands to yield a continuous flow of wood products and income.
The objectives of this paper are to: (1) describe the structure and output of SHRUB and RMS8O, (2) evaluate their respective ability to satisfy the needs of a state level timber assessment, and (3) demonstrate their application to forest planning using the state of California as the focus of a...
As the population in the United States and the world grows, the demand for wood products, recreation opportunities, clean air and water, and other primary and derived forest resources will grow. Opportunities to realize each of the forest resources in a given area may be mutually exclusive, and their production...
This paper includes a literature review of the methodologies invoked to surmount difficulties inherent with aerial photograph mensuration. The synopsis of early achievements is followed by a more intensive examination of experimental studies of the last decade, particularly the work on controlled scale photography.
This report on the pursuit of...
This paper describes the results of a study of log
truck travel speeds in three locations in Western Oregon on
favorable grades and curves. Independent variables of grade,
curve radius, width, ditch depth, superelevation, sight
distance, time of day, and maximum engine braking horsepower
were regressed against speed. Only grade...
Tension relationships were determined in steel cable passed through a stump notch and anchored to another object. Tensions were measured in the cable coming into and leaving the notch with one full wrap on the stump. Data was collected from two sites with two test stumps (15.7 to 37.5 inches...
The Northwest timber industry is in a transition to a smallwood harvest environment. As the Northwest moves to smaller average diameter stands log values have decreased and harvest costs have increased. In an effort to increase profitability, Northwest loggers are beginning to "mechanize". The profitable operation of a mechanized harvest...
This project was one of several studies conducted during the summer of 1981 that were part of the Smallwood Harvesting Research Program administered through the Department of Forest Engineering, Oregon State University. The study looked·at the feasibility of falling and yarding whole trees as a combined activity in a cable...
Some results of a study conducted in the Sierra Nevada
Mountains west of Lake Tahoe are reported. The study measured
soil impacts resulting from the use of a Caterpillar Tractor
model D6D, a John Deere wheeled skidder model JD-640, and an FMC
Corporation model FMC 21OCA logging vehicle. The three...