The sale of raw logs from the Pacific Northwest (PNW) was at first
considered a desirable market for the sale of unwanted logs. It became
a rapidly growing market, and with its growth also came demands from
some in the PNW for restrictions against exporting logs. Some believed
that the...
In this paper, a catenary analysis of static skyline, mainline and haulback cable tensions just prior to an unsuccessful attempt by a carriage to pass an intermediate support jack is presented. Field tests were conducted for a range of skyline deflections and span chord slopes. Data collected during the field...
The Forest Engineering Department, Oregon State University, has evaluated several systems for thinning young timber stands on steep terrain. Stands averaged 35 to 40 years old and 25.4 to 35.6 cm (10-14 in.) dbh. Approximately 40 percent of the stems per hectare were removed in the thinning operations. This paper...
The management Pf forest resources is a complex task. A thorough and up-to-date inventory is an important part of forest management. Aerial photography is one of the important tools used to facilitate the design of a forest inventory. Aerial photographs are used to determine acreages, to locate roads and sample...
The purpose of this paper is to show the amount of land use change taking place between 1963 and 19714. in T. 11 S.,R. 14- W., W.M., which is located between Albany and Corvallis. The changes of primary interest involve the shifts of agricultural land to residential, commercial and industrial...
Joints were fabricated from different combinations of untreated and fire-retardant- treated (FRT) Douglas-fir dimension lumber and 3/8-inch plywood. Eight types of fasteners and three fire-retardant treatments were tested. Joint specimens were exposed 2 and 7 years in cold, standard, and warm-humid conditions, then tested in lateral bearing. Best overall performance...