Index Catalog // ScholarsArchive@OSU

Stabilization of landslides along the Oregon Coast

Creator:: Prestedge, Gordon Kendall
Abstract:: The northern Oregon coast suffers extensive loss of land as a result of landslides which constitute the primary mechanism of coastline recession. Both real property and structures along the coast have been destroyed and this destruction will continue. In certain instances, it may be feasible to protect property by engineered...
Resource Type:: Capstone Project

Economic analysis for a toll facility

Creator:: Koh, Kwang Sun
Abstract:: This thesis presents an economic analysis for a proposed toll road which is to separate different types of traffic such as pedestrians, slow speed vehicles and high speed motor vehicles, and to divert through traffic from the local roads. The use of a toll road usually provides significant savings in...
Resource Type:: Masters Thesis

Pollutants leached from selected species of wood in log storage waters

Creator:: Graham, John LeRoy
Abstract:: A study was conducted to determine the quantity and character of substances leached from logs floating in water, and the rate of leaching of these substances. The species of wood studied were Douglas fir and ponderosa pine. The research was carried out in a controlled laboratory environment with log sections...
Resource Type:: Masters Thesis

Structural analysis of symmetrical penstock bifurcations by the finite element method

Creator:: Shugar, T. A.
Abstract:: A need has existed for an in-depth structural analysis of penstock bifurcations because they form an integral part of hydroelectric power plants. Their geometrical complexity has prevented classical structural analysis from providing an accurate and overall picture of the stresses in the structure. Digital computers and the development of finite...
Resource Type:: Dissertation

A determination of ultimate pile capacity in clayey silt

Creator:: Thompson, Duane Melvin
Abstract:: Predetermining the ultimate capacity of piles driven into purely cohesive soils and purely cohesionless soils involves, respectively, the consideration of soil shear strength in a completely undrained and a completely drained condition. For the intermediate cases concerning soils that possess both cohesion and internal friction (silts, clayey silts, sandy clays,...
Resource Type:: Masters Thesis

Storm runoff response from roadbuilding and logging on small watersheds in the Oregon Coast Range

Creator:: Hsieh, Frederic Shu-kong
Abstract:: The effects of roadbuilding, logging and burning upon stream runoff responses to individual storms are evaluated for the Alsea experimental watersheds, located in the Oregon Coast Range, The parameters analyzed are peak discharge, induced peak discharge, time-to-peak, and storm-runoff volume. The volume parameter is further sub-divided into total, quick, delayed,...
Resource Type:: Masters Thesis

Stability of gravel at artificially created spawning beds in uncontrolled streams

Creator:: Helland-Hansen, Erik Andreas
Abstract:: Twenty-five gabion-type structures across the main stem and tributaries of the Siuslaw River in the Oregon Coastal Range, installed to expand the available spawning area for fish, were investigated for their ability to perform gravel control functions such as trapping bedload carried by the stream or holding gravel placed behind...
Resource Type:: Masters Thesis

Ambient current effects on vertical selective flow withdrawal in a two layer reservoir system

Creator:: Charbeneau, Randall Jay
Abstract:: Withdrawal from a two-layer flow field is examined in terms of the degree of selectivity of the withdrawal flow and its dependence on an ambient current. Selectivity is defined as the bias of withdrawing one layer more strongly than the other; the extreme' case is complete selective withdrawal, where one...
Resource Type:: Masters Thesis

Effect of deposits in Columbia Slough on algae growth in Smith and Bybee lakes

Creator:: Sobolewski, William Joseph
Abstract:: Currently, the Port of Portland is developing a 9, 410 acre area at the confluence of the Columbia and Willamette Rivers in Multnomah County, Oregon. This area will be developed for industrial, commercial, and recreational use. The recreational development in the North Portland Peninsula area, including the Rivergate Industrial District,...
Resource Type:: Masters Thesis

Consolidation characteristics of calcareous deep sea-floor sediments from the Panama Basin

Creator:: Kao, Yeoung Ting
Abstract:: Calcareous sediments containing a large percentage of foraminiferal microskeletal tests were taken from sites in the Panama Basin and subjected to an investigation to determine the consolidation characteristics of this type of soil. The consolidation-stress curves and the time rate of consolidation curves in particular were investigated in this study....
Resource Type:: Masters Thesis

An investigation of the feasibility of a cutbank slope design method based on the analysis of natural slopes

Creator:: Keener, Quentin Roosevelt
Abstract:: The failure of cutbanks is a major problem encountered by those who construct low-cost roads in naturally forested residual soils. Attempts have been made to lessen the severity of failures by classifying certain soil areas as to their susceptibility to failure, in addition to bringing past design experience into play...
Resource Type:: Masters Thesis

Airphoto analysis of estuarine circulation

Creator:: Weise, Harry Gordon
Abstract:: Aerial photography has become a valuable method of acquiring information on estuarine current circulation patterns. The method provides a comprehensive picture of nearly simultaneous surface water movements. It represents a significant improvement over conventional surface float and current meter methods because large areas may be covered in great detail with...
Resource Type:: Masters Thesis

System design for Dungeness crab processing

Creator:: Adams, Burton Warren
Abstract:: Dungeness crab is an important fishery on the Pacific Coast. The processing subsystem of the fishery is hampered by a variety of problems that have acted to impede technological innovations that could improve efficiency and sanitation in seafood plants. This paper provides background for problems encountered by the processors, discusses...
Resource Type:: Masters Thesis

Relationships between seasonal suspended sediment behavior and reservoir turbidity

Creator:: Conner, Dan Alan
Abstract:: The causes of turbidity in impounded and released reservoir water are studied. Seven Willamette Basin reservoirs are compared to isolate watershed and reservoir characteristics which produce variations in turbidity. Of the seven, Hills Creek Reservoir is examined in detail. Particular features of the basin and impoundment are studied to isolate...
Resource Type:: Masters Thesis

Factors affecting the adsorption of heavy metals by activated sludge bacteria

Creator:: Conlin, Mary F.
Resource Type:: Masters Thesis

The static and dynamic analysis of discretely represented moorings and cables by numerical means

Creator:: Dominguez, Richard Frank
Abstract:: Computer oriented techniques and procedures are presented for the analysis of single and multiple cable systems. Application is made to a two-point mooring system influenced by surface and subsurface hydrodynamic loading. The effects of the various parameters are presented and the numerical method is compared to exact solutions obtained from...
Resource Type:: Dissertation

Numerical method for calculating construction pore pressures in embankments

Creator:: Steward, John Erwin
Abstract:: A computer program was developed for estimating construction pore pressures in embankments without drainage at any location in the embankment at any time during construction. This program incorporated a modification of the Hilf-Brantz method of pore pressure calculation and a finite element method of stress computation. Previous methods of calculating...
Resource Type:: Masters Thesis

Overland flow treatment of swine lagoon effluent

Creator:: Boda, Joseph Owen
Abstract:: Effluent from an anaerobic swine manure lagoon was applied at the upper end of six, 100 feet (30.5 m) long by 3 feet (0.9m) wide, grass-covered plots which sloped about 3 percent. The objectives were to measure concentration attenuation and mass reduction of potential pollutants in the wastewater as the...
Resource Type:: Masters Thesis

Stress-strain-time relations for a compacted residual soil

Creator:: Khuayjarernpanishk, Thanasarn
Resource Type:: Masters Thesis

Transport and adsorption of proteinanceous particles during flow through porous media

Creator:: Yamamoto, Tokuo
Abstract:: This is a fundamental study of the mechanism of protein particle removal during flow through sandy soil. Mathematical models for diffusion-adsorption and diffusion-convection-adsorption processes were developed and compared with experimental data. An attempt was made to calculate the distance over which the adsorption forces act. The differential equation for the...
Resource Type:: Dissertation

Behavior of stream inflows to a stratifying field reservoir

Creator:: Chasse, James Peter
Abstract:: The behavior of a stream upon entering a field reservoir was studied at various stages of stratification. The principal field techniques included fluorometric and temperature surveys. General relationships were obtained, between dimensional and locational characteristics of the inflow current and the thermal structure of the impoundment. As predicted by analytical...
Resource Type:: Masters Thesis

The use of polymers for better settling in domestic waste treatment systems

Creator:: Houck, George Campbell
Abstract:: The author presents a "state of the art" of the use of polymers for better settling in domestic waste treatment and evaluates the published research in the field. Polymers have only recently been used to obtain better settling in domestic waste treatment. Due to the number of polymer types available...
Resource Type:: Masters Thesis

Effects of imbedded perforated pipes on permeability of gravelly stream beds

Creator:: Chu, Eddy Tak-hing
Abstract:: Perforated pipes were buried in the gravel bed of a laboratory stream, extending upstream from a simulated riffle in order to study their effect upon mixing and interchange of stream water and intragravel water. In the absence of such pipes the drop of energy gradient of the stream was concentrated...
Resource Type:: Masters Thesis

Curriculum synthesis and amelioration : a case study of undergraduate civil engineering

Creator:: Hamernik, Robert E.
Abstract:: The dynamic philosophy of education as applied to the undergraduate Civil Engineering program has been influenced by such factors as the introduction of new theories, the demands and needs of our society and the personnel responsible for teaching. These changes are reflected in the curriculum as witnessed by a historical...
Resource Type:: Dissertation

Biaxial bending of concrete members with applications to prestressed concrete power poles

Creator:: Stephens, Charles Talmon
Abstract:: A method of analysis of arbitrarily shaped prestressed concrete members for biaxial bending is given. The stress-strain curve of the concrete is represented by two parabolic segments, and the effects of strain hardening of the steel are included in the analysis. An iterative numerical procedure is used to solve for...
Resource Type:: Dissertation

Spatial, diel and seasonal variations in dissolved oxygen and temperature within a stratified lake

Creator:: Smith, Stanley Allan
Abstract:: Spatial, diel and seasonal variations in dissolved oxygen and temperature were measured in Triangle Lake, Oregon. Spatial dissolved oxygen and temperature variations measured in the stratified lake are presented to illustrate the horizontal uniformity of the lake and to demonstrate the applicability of the one dimensional assumption for sampling and...
Resource Type:: Masters Thesis

BOD and toxicity of log leachates

Creator:: Atkinson, Sheridan William
Abstract:: A series of log storage experiments were conducted to determine whether leachates derived from water storage of logs are acutely toxic to fish. Log segments approximately 18 inches long and 16 inches in diameter were stored in tanks and held submerged for a period of 7 days. The holding water...
Resource Type:: Masters Thesis

Behavior of a circular cell bulkhead during construction

Creator:: Khuayjarernpanishk, Thanasarn
Abstract:: A single cell in a 12 cell bulkhead was instrumented to observe its behavior and confirm design assumptions during construction. Vibrating wire strain gages were employed to measure horizontal strains in sheetpiling webs. These were converted to interlock force at eight locations and three elevations around the cell. The deformed...
Resource Type:: Dissertation

Nutrients in runoff from spray irrigation of swine wastes

Creator:: Taylor, Dennis William
Abstract:: Major emphasis of this research study involved the evaluation of nutrient transport by overland flow. Samples gathered at various distances relative to a swine-waste spray irrigation system were used for the nutrient evaluation. As a result of this study, the following conclusions are made: 1. It is improbable that the...
Resource Type:: Masters Thesis

Experimental behavior of wide-flange beams with web holes

Creator:: Horning, Richard Alan
Abstract:: Two built-up wide-flange beams with several large holes in each beam were tested to failure. Strains were measured by strain gages at various levels, located at the ends and center of typical holes, and deflections were measured optically at two points on each beam. Lateral bracing was provided to prevent...
Resource Type:: Masters Thesis

Mathematical model of a phytoplankton community in a nitrate limited environment

Creator:: Grenney, William J.
Abstract:: Mathematical modeling of phytoplankton populations based on laboratory observations provides increased understanding of the interaction among the environmental and biological mechanisms. influencing growth dynamics. Such fundamental understanding is necessary to estimate the impact of man-made perturbations on natural population. A three-compartment mathematical model was developed to represent a phytoplankton population...
Resource Type:: Dissertation

Finite elements analysis of circular cell bulkheads

Creator:: Kittisatra, Likhit
Abstract:: A mathematical model is developed for the analysis of circular cell bulkheads subjected to gravity loads of cell fill, backfill, lateral pressure, and surcharge load using the finite element method. The finite element circular cell model consists of axisymmetric triangular and/or quadrilateral ring elements for soil and cylindrical shell elements...
Resource Type:: Dissertation

An evaluation of the cubic autotape under dynamic conditions

Creator:: Plasker, James Robert
Abstract:: Accuracy requirements for positioning a vessel in the near shore area have increased in recent years. To meet these requirements several electronic positioning systems have been developed. One such system is the Cubic Autotape Model DM-40. The Autotape is a circular positioning system which utilizes the phase comparison between transmitted...
Resource Type:: Masters Thesis

Wave forces on a horizontal circular cylinder near a plane boundary

Creator:: Wright, James Christopher
Resource Type:: Masters Thesis

Numerical simulation of sedimentation and circulation in rectangular marina basins

Creator:: Askren, David, 1947-
Resource Type:: Masters Thesis

Modeling hydraulic dredge spoil fate

Creator:: Tseng, Ying-chuan
Abstract:: Hydraulic dredging is and most certainly will remain a primary means of maintaining and improving ship channels and for land reclamation in near-shore water. The study of which this thesis describes a part is intended to develop a method of predetermining the immediate disposition of sand spoils from hydraulic dredging...
Resource Type:: Masters Thesis

Development of a priority rating system for highway safety improvements

Creator:: Iranitalab, Farhad
Abstract:: This thesis presents the procedure adopted to develop the priority rating system for highway safety improvements. Safety hazards are classified into four categories: (1) Railroad crossings, (2) Intersections, (3) Geometric-Related Hazards, and (4) Roadside Hazards. For each category of hazards, relationships are developed to obtain a hazard index and expected...
Resource Type:: Masters Thesis

Pile hammer selection by driving stress analysis

Creator:: Barrero-Quiroga, Franklin
Abstract:: This paper presents an application of the wave equation to the problem of selecting a driving hammer for prestressed concrete piles. The potentially damaging effects of these types of hammers on various prestressed concrete piles were analyzed by means of parametric studies carried out on a hypothetical group of problems...
Resource Type:: Masters Thesis

Static and dynamic analysis of wood-joist floors by the finite element method

Creator:: Polensek, Anton
Abstract:: The conventional method for structural design of wood-joist floors is over-simplified and often results in stronger and stiffer floors than necessary. There is also a need to include in the floor design additional criteria dealing with human response to floor vibration such as that due to walking. This study develops...
Resource Type:: Dissertation

Experimental investigation of stresses in steel I-beams with rectangular holes in the webs

Creator:: Landers, William Brooks
Resource Type:: Dissertation

A manual for plate loading tests performed on rock

Creator:: Dodds, Donald J.
Abstract:: Plate loading tests in rock are deceptively simple tests to perform. Consequently, many varieties have been developed in the past 60 years. From each of the varieties various investigators have added their own developments and modifications, some good, and some not so good. The result has been a confusion of...
Resource Type:: Masters Thesis

Finite element analysis of culverts under embankments with time dependent and non-linear properties

Creator:: Lertlaksana, Voravit
Abstract:: A computer program was developed for analyzing culverts under earth embankments constructed of compacted cohesive soil using the finite element method. The culvert-embankment system is represented as a two-dimensional plane strain problem. The plane of investigation is taken normal to the culvert axis. The soil-culvert interface is assumed to be...
Resource Type:: Dissertation

Large scale model testing of the FMC submerged wave attenuation device

Creator:: Huber, David S.
Abstract:: This report describes the hydrodynamic testing and evaluation of a one-tenth scale model of the FMC Wave Attenuation Device. The purpose of the test was to quantify the wave attenuation characteristics and structural loading induced by a test program of monochromatic incident waves on the submerged structure. The device was...
Resource Type:: Masters Thesis

A model for simulating river and reservoir temperatures with applications for anadromous fish management

Creator:: Currie, James William
Abstract:: A problem confronting the Corps of Engineers and other water resources planners in the Pacific Northwest is the prediction of anadromous fish enhancement benefits that would result from a proposed high dam project. These benefits are expected from augmenting natural streamflows with relatively cold reservoir withdrawals. The resulting increased streamflows...
Resource Type:: Dissertation

Penetration resistance predictions for driven piling

Creator:: Hansen, Lawrence A.
Abstract:: This paper presents a method of predicting penetration resistance for driven piles, using known driving records for driving the same type piling in similar subsurface conditions. As known driving records are not always available to the analyst, a method was also investigated using soil data only. The analytical tools employed...
Resource Type:: Masters Thesis

Dynamic response of an offshore structure to measured and simulated stochastic wave forces

Creator:: Grecco, Michael G.
Abstract:: The dynamic response of an offshore structure to measured and simulated stochastic wave forces is investigated. The theoretical nondeterministic analysis is performed in the frequency domain for a two-dimensional model. The ocean wave system is assumed to be a zero mean, stationary, ergodic Gaussian process described by a one-dimensional wave...
Resource Type:: Masters Thesis

Investigation of a nonwoven fabric as a reinforcement for gravel paved roads

Creator:: Kelsay, Harry Stanley
Abstract:: Full scale test roads combined with a theoretical analysis were used to evaluate the benefits of incorporating a fabric as a base course support material for gravel paved roads. One material, a synthetic, nonwoven, polypropylene fabric was used in this investigation. This fabric was used on top of the subgrade...
Resource Type:: Masters Thesis

A model study of fabric reinforced earth walls

Creator:: Stilley, Alan Neal
Abstract:: The concept of placing high strength linear reinforcements in a soil backfill to produce a vertical retaining structure is a recent idea that has been applied with success at a number of locations. Rational procedures have been developed for the design of these structures when the reinforcements consist of long...
Resource Type:: Masters Thesis

Hydraulic functions of soils from physical experiments and their applications

Creator:: Su, Charles
Abstract:: Based upon the Pearson Type VIII distribution function, a general retention function which relates the saturation to the capillary pressure in disturbed soils has been discovered. This simple and yet complete function has been shown to describe precisely the imbibition as well as the drainage branch of the retention curve....
Resource Type:: Dissertation

Flow slide control with slope revetments

Creator:: Narkiewicz, Steven Arthur
Abstract:: This paper examines the response of submerged model sand slopes to vibration and the beneficial effects of placing rock revetments on the face of the slope to prevent flaw slides. Pore water pressure response and deflection were used as a criteria for stability in an attempt to relate stability with...
Resource Type:: Masters Thesis

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