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Laboratory investigation of the mechanics of raveling soils

Creator:: Saunders, George P.
Abstract:: Oregon's forestry industry has and will continue to be a vital component of Oregon's economy, with twenty-two percent of Oregon's 1986 gross state product and thirty-nine percent of Oregon's 1986 gross manufacturing product related the forestry goods. An integral component to proper management of Oregon's forestry lands is Sustaining the...
Resource Type:: Masters Thesis

An investigation of the influence of root reinforcements on soil strength and the initiation of static liquefaction in forest soils

Creator:: Smith, Russell S.
Abstract:: A study was conducted to investigate the influence of root reinforcements on soil strength and the initiation of static liquefaction in forest soils. The design and operation was developed of an apparatus capable of modeling rainfall-induced shallow hill-slope failures that also permitted observation of the soil volume change tendencies at...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: Marvin R,'yles A study was conducted to investigate the influence of root

The short term temporal and spatial variability of nitrogen and phosphorus in two Oregon Coast Range streams

Creator:: Scherer, Robert A.
Abstract:: High intensity sampling was undertaken to characterize the temporal and spatial variability of oxidized nitrogen (NO3-N + NO2-N), ammonia-nitrogen (NH3-N), total dissolved phosphorus, total unfiltered phosphorus and orthophosphorus (PO4-P) from two adjacent small streams in Western Oregon's Coast Range, Deer Creek (303 ha) and Flynn Creek (203 ha). Deer Creek...
Resource Type:: Masters Thesis

Mechanics and movement of the Lookout Creek Earthflow

Creator:: Mills, Keith A.
Abstract:: The Lookout Creek Earthflow is located in the Cascade Mountain Range in western Oregon. The Cascade Mountains are mainly volcanic in origin, and deposits in and around the slide have a complex geomorphic history,, affected by glacial, mass movement, and fluvial processes. The currently moving land mass is about 1600...
Resource Type:: Masters Thesis

Test procedures for low-confining stress, multistage triaxial testing of compacted cohesive soils

Creator:: Kliewer, Julie E.
Abstract:: The use of the triaxial test to characterize the strength of soils for civil engineering applications is widespread. These tests are typically conducted with confining stresses in excess of 5 psi. To characterize the strength of a soil located in the upper layers of the subgrade of an aggregate surfaced...
Resource Type:: Masters Thesis

Peakflow causative mechanisms and frequencies at Reynolds Creek, southwestern Idaho

Creator:: Kirkham, Tracie
Abstract:: Peakflow frequency analysis is used in forest hydrology for designing stream crossing structures such as culverts and bridges. The traditional approach to frequency analysis is based on the assumption that the observed sample of peakflows represents a homogeneous population. It is not clear if using the "homogeneous" population of the...
Resource Type:: Masters Thesis
Full Text:: Reynolds Creek, Southwestern Idaho. Abstract Approved: ---------~~--~--------Marvin R. Pyles Peakflow

Shear stress transfer between roots and soil

Creator:: Commandeur, P. R.
Abstract:: Mass wasting events are a principal form of erosion that occurs on steep forest land throughout the Pacific Northwest. Numerous studies have reported that tree roots help stabilize steep forest land. A complete understanding of the mechanism by which roots strengthen soil would enable modeling to more closely approximate field...
Resource Type:: Masters Thesis

The spatial and temporal variability of nitrate in streams of the Bull Run Watershed, Oregon

Creator:: Bakke, Paul D.
Abstract:: An 18-year record of nitrate (NO₃), orthophosphate, total nitrogen and total phosphorus in four streams of the Bull Run watershed, Oregon, was examined to determine its precision and time resolution. Of these four species, only NO₃ was found to be known to a sufficient level of detail for modeling and...
Resource Type:: Masters Thesis

Analysis of intermediate support cable logging systems

Creator:: Charland, James W.
Abstract:: The forest products industry often uses intermediate-support cable logging systems to transport logs from the harvest site to a staging area. A method is presented to assist in the analysis and design of these cable systems. The method determines tensions in individual cables, forces on and stresses in the support...
Resource Type:: Masters Thesis
Full Text:: : Marvin R. Pyles The forest products industry often uses intermediate-support cable logging systems to

Simplified stability assessment for low volume road cut and fill slopes

Creator:: Pratt, Randy C.
Abstract:: Many miles of roads are built in the Pacific Northwest Forests to provide access for logging and fire protection. Logging roads often cross steep mountainous terrain. Logging roads and the associated cut and fill slopes represent a discontinuity in the natural stress state in the soil mantle. These conditions result...
Resource Type:: Masters Thesis
Full Text:: Road Cut and Fill Slopes Abstract approved: Redacted for Privacy Dr. Marvin Pyles /1 Many miles of

ScholarsArchive@OSU

Laboratory investigation of the mechanics of raveling soils

An investigation of the influence of root reinforcements on soil strength and the initiation of static liquefaction in forest soils

The short term temporal and spatial variability of nitrogen and phosphorus in two Oregon Coast Range streams

Mechanics and movement of the Lookout Creek Earthflow

Test procedures for low-confining stress, multistage triaxial testing of compacted cohesive soils

Peakflow causative mechanisms and frequencies at Reynolds Creek, southwestern Idaho

Shear stress transfer between roots and soil

The spatial and temporal variability of nitrate in streams of the Bull Run Watershed, Oregon

Analysis of intermediate support cable logging systems

Simplified stability assessment for low volume road cut and fill slopes

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