Index Catalog // ScholarsArchive@OSU

Tension relationships for steel cable on notched stumps

Creator:: Kimbell, Abigail R.
Abstract:: 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...
Resource Type:: Capstone Project

Investigation of synthetic rope end connections and terminations in timber harvesting applications

Creator:: Hartter, Joel N.
Abstract:: Steel wire rope is the accepted standard in logging. It is strong, durable, stiff, and dependable in the logger's arsenal. However, steel wire rope has several disadvantages: its strength to weight ratio is low; it is difficult and time-consuming to splice; and used wire ropes contain jaggers. Ultra-high molecular weight...
Resource Type:: Masters Thesis
Full Text:: 3.7.1.4 Test Equipment and Data Collection .................................................... 58 4

The effects of swinging and sorting with a skidder on yarding and loading efficiency in small diameter Douglas-fir

Creator:: McIntire, John Charles
Abstract:: This study evaluated the impact of using a rubber-tired skidder to keep the landing clear by sorting and decking the logs along the road prior to loading by a self-loading truck. The evaluation was accomplished through detailed time studies conducted on a Koller K-300 yarder, a Crown Super 3000 self-loader,...
Resource Type:: Capstone Project

Load bearing capacity of alder, spruce and hemlock tail trees

Creator:: Pugh, Edwin V.
Abstract:: This paper presents an evaluation of the cable loading support capacity of red alder, Alnus rubra Bong., Sitka spruce, Picea sitchensis (Bong.) Carr, and western hemlock, Tsuga heterophylla (Raf.) Sarg., tail trees. Capacity is measured in terms of combined stress resulting from compression and bending, rather than the traditional methods...
Resource Type:: Capstone Project

Load-deformation characteristics of multiple stump anchor systems

Creator:: Toupin, Richard C.
Abstract:: This paper documents the development of a model which determines multiple stump anchor system displacement as a response to skyline load for four anchor rigging configurations: 1. Series multiple, 2. Tieback, 3. Elevated tieback, and 4. Equalizer block. It also documents the field testing of four two stump anchors rigged...
Resource Type:: Capstone Project

Engineering analysis of forces created in two tree intermediate supports during multi-span logging

Creator:: Fodge, Francis W.
Abstract:: An analysis of forces on two tree intermediate supports is presented. The analysis is in two parts: The maximum force that the support jack will experience. The movement and forces created in the two tree support by the skyline and carriage. The maximum force on the support jack occurs when...
Resource Type:: Capstone Project

A study of the lateral yarding forces in a cable thinning

Creator:: Falk, Gary D.
Abstract:: This paper describes the results of a project conducted to determine the magnitude of and the parameters affecting the magnitude of the cable tensions generated during lateral yarding operations in a cable thinning. Specific emphasis was placed on measuring mainline tensions as a function of turn weight, turn length, mainline...
Resource Type:: Masters Thesis

A method of selection of cable harvesting machines for Vermont

Creator:: Stirler, Dennis John
Abstract:: There is much interest in the State of Vermont in cable harvesting. Since there are no time studies available for cable harvesting with various machines in Vermont, it is necessary to arrive at production and cost levels by a different method. The method chosen for this paper is made up...
Resource Type:: Capstone Project

Thinning with prescribed fire and timber harvesting mechanization for fuels reduction and forest restoration

Creator:: Matzka, Peter J.
Abstract:: In the Blue Mountains of northeastern Oregon, prescribed fire and mechanical harvesting economics were investigated for fuels reduction and forest restoration. Using a cut-to-length harvesting system, three single-grip harvesters and three forwarders produced significantly different production rates. For the harvesters, significant variables that affected production rates were found to be:...
Resource Type:: Dissertation

ScholarsArchive@OSU

Tension relationships for steel cable on notched stumps

Investigation of synthetic rope end connections and terminations in timber harvesting applications

The effects of swinging and sorting with a skidder on yarding and loading efficiency in small diameter Douglas-fir

Load bearing capacity of alder, spruce and hemlock tail trees

Load-deformation characteristics of multiple stump anchor systems

Engineering analysis of forces created in two tree intermediate supports during multi-span logging

A study of the lateral yarding forces in a cable thinning

A method of selection of cable harvesting machines for Vermont

Thinning with prescribed fire and timber harvesting mechanization for fuels reduction and forest restoration

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