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  • GOSEP: Georeferenced Oregon Soil Engineering Properties

    Creator:
    Dutille, Victoria L.
    Abstract:
    Geotechnical engineers design and analyze the interface between the natural and built environments, often based on uncertain and inherently variable data due to the nature of the building material, soil. Engineers must estimate the subsurface conditions at a site using historical, in-situ, and laboratory testing data. However, only discrete representative...
    Resource Type:
    Capstone Project
    Full Text:
    release of my report to any reader upon request. Victoria Dutille, Author 4

  • Data assessment in Oregon for SafetyAnalyst based on Highway Safety Manual Part B

    Creator:
    Li, Meng
    Abstract:
    The author of the Highway Safety Manual (HSM) Part B developed a predictive method for safety management. A software tool for highway safety system analysis called the SafetyAnalyst is developed basing on HSM Part B. The author describes an effort to evaluate the feasibility of SafetyAnalyst in Oregon. Seven sample...
    Resource Type:
    Masters Thesis
    Full Text:
    Safety Evaluation of Curve Warning Speed Signs – Interim Report

  • An investigation of Oregon weight-in-motion data for bridge rating implementation and evaluation

    Creator:
    Pelphrey, Jordan Michael
    Abstract:
    The LRFR Manual, within commentary Article C6.4.4.2.3, contains provisions for development of site-specific live load factors. In Oregon, truck Weigh-in-Motion (WIM) data were used to develop live load factors for use on state-owned bridges. The factors were calibrated using the same statistical methods that were used in the original development...
    Resource Type:
    Masters Thesis
    Full Text:
    smaller than the national standard. The first part of this report describes the jurisdictional and

  • Flexible membrane wave barrier

    Creator:
    Thompson, Gary O.
    Abstract:
    This report details the derivation of an analytical model for a flexible membrane wave barrier. The wave barrier consists of a thin flexible membrane suspended in the water column by a moored cylindrical buoy on the free surface and fixed to a hinge at the seafloor. The analytical model combines...
    Resource Type:
    Masters Thesis
    Full Text:
    . Sollitt This report details the derivation of an analytical model for a flexible membrane wave barrier

  • Requirements for successful irrigation systems in the Senegal River Basin (Mauritania)

    Creator:
    Abba, Fatima Zahra
    Abstract:
    Implementation of a small-scale irrigation project in southern Mauritania is analyzed in this report. The main objective is to demonstrate that small-scale irrigation farming is the best suited solution for Mauritania's agriculture. To reach this objective different steps are taken in this study. The first step highlights the different aspects...
    Resource Type:
    Masters Thesis
    Full Text:
    report. The main objective is to demonstrate that small-scale irrigation farming is the best suited

  • Risk and reliability associated with use and reuse of vertical formwork

    Creator:
    Das, Amrutha
    Abstract:
    Concrete formwork is a common type of temporary structure used on construction projects. Due to difficulties in considering actual construction site implications during formwork design, assessments of formwork integrity are often made in the field by site personnel based on subjective visual inspection. The use and re-use of concrete formwork...
    Resource Type:
    Masters Thesis
    Full Text:
    accidents associated with formwork use. There are no mandatory rules regarding the use and re-use of

  • Consistency and effectiveness of advisory speeds: an evaluation of current posting techniques

    Creator:
    Rohani, Joshan W.
    Abstract:
    Crash rates are said to be nearly three times higher on curved sections than those on straight sections of rural roadways. As a result, advisory curve/speed signs are standard practice to mitigate these risks on sharp horizontal curves. The industry standard for determining appropriate and uniform speeds for such signs...
    Resource Type:
    Masters Thesis
    Full Text:
    maintained facilities to support the analysis (with a total of 232 curves). This report is intended as a

  • Evaluation of selected marginal aggregates stabilized with cement

    Creator:
    Chang, Chen
    Abstract:
    Coastal Oregon is deficient in quality construction aggregate. There is, however, an abundance of lower quality, or marginal aggregate available for construction purposes. The purpose of this report is to develop techniques for upgrading marginal aggregates with portland cement and methods for evaluating the relative performance of these stabilized materials...
    Resource Type:
    Masters Thesis
    Full Text:
    aggre- gate available for construction purposes. The purpose of this report is to develop techniques

  • Design data for field engineers

    Creator:
    De Jong, Tim
    Abstract:
    The author and compiler of Design Data for Field Engineers has included in his volume short cuts in design, and miscellaneous data and information used on general civil engineering projects from inception to completion. The book is intended for the engineer who may be stationed in isolated areas and who...
    Resource Type:
    Masters Thesis
    Full Text:
    outlines briefly requirements of a report in accordance with the project's need and purpose. It

  • Properties of marginal aggregates treated with asphalt emulsion

    Creator:
    Evans, Gary L.
    Abstract:
    The purpose of this report is to address the problem of supplying construction aggregates to Oregon's coastal areas that are currently, or will in the near future, be deficient of good quality materials. This is done primarily by studying methods of utilizing marginal aggregates that are abundantly available in the...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract Approved: Redacted for Privacy Dr. R. pary Hicks The purpose of this report is to address the

  • The role of alumina in the mitigation of alkali-silica reaction

    Creator:
    Warner, Skyler J.
    Abstract:
    The use of fly ash as a supplementary cementitious material (SCM) has increased in the last century due to its various environmental benefits as a recycled product. Within the last 60 years, it has been found that it can be used to effectively control damage induced by Alkali-Silica Reaction. However,...
    Resource Type:
    Masters Thesis
    Full Text:
    and there is no standardized test method to doing so. When contributed by the implementation of a

  • Bus accessibility for persons with sensory disabilities

    Creator:
    Hron, Martha
    Abstract:
    With the passage of the American with Disabilities Act (ADA) it has become a civil rights violation to deny access to persons with disabilities to public transportation. The ADA requires transit agencies to provide accessible buses or equivalent services to persons with mobility, sensory or cognitive impairments. This study examines...
    Resource Type:
    Masters Thesis
    Full Text:
    cognitive impairments, and their access to fixed route transit services. The goal of this report is: to

  • Soil-bridge interaction during long-duration earthquake motions

    Creator:
    Romney, Kyle T.
    Abstract:
    Earthquake engineering analyses are often performed using shallow, crustal earthquake motions (e.g., 1940 El Centro). However, large areas of the world are subject to subduction zone earthquake motions (e.g., the Pacific Northwest). A subduction zone earthquake motion is characterized by its long duration (e.g., strong shaking lasts for more than...
    Resource Type:
    Masters Thesis
    Full Text:
    of this thesis is to report the seismic response of a soil-bridge system during long-duration

  • A Numerical Investigation of the Bearing Capacity of Shallow Foundations on Salt-Encrusted Flat Sabkha

    Creator:
    Refaei, Raied
    Abstract:
    Salt-encrusted flats, or Sabkha, are common in arid and semi-arid regions worldwide, including coastal and inland areas. Due to their low shear strength and high compressibility, these soils are often unsuitable for supporting infrastructure or structures. The unique salt content of sabkha formations sets them apart from other soil types....
    Resource Type:
    Masters Thesis

  • Performance Based Tests on Cross Laminated Timber - Concrete Composite Floor Panels

    Creator:
    Blank, Curtis
    Abstract:
    This project determines the short term and long term effective stiffness values for Cross Laminated Timber (CLT) with a reinforced concrete topping. The reinforced concrete was attached to the CLT panels with interface connections, and different types of interface connections were tested. Throughout this project, there are 31 tests with...
    Resource Type:
    Masters Thesis
    Full Text:
    project, there are 31 tests with composite CLT floor panels. Described in this report are:  Eight 2

  • Unmanned aircraft systems for bridge inspection : testing and developing end-to-end operational workflow

    Creator:
    Gillins, Matthew N.
    Abstract:
    Bridge inspections are vital for monitoring the health and serviceability of transportation infrastructure throughout the world. However, inspections can be logistically-challenging, expensive, and dangerous. For example, inspections may require climbing, as well as the use of scaffolding, ladders, rescue boats, bucket trucks, and/or under-bridge inspection vehicles. Small, multirotor unmanned aircraft...
    Resource Type:
    Masters Thesis
    Full Text:
    . Bridge Report Inventory Items UAS Can Facilitate ..................................33 4. Bridge

  • Groundwater flow model for the lower Malheur Basin near Ontario, Oregon

    Creator:
    Walker, David S.
    Abstract:
    The shallow, poorly-confined, sand and gravel aquifer underlying the lower Malheur River basin is contaminated by nitrate and metabolites of the herbicide dimethyl tetrachloroterephthalate (DCPA), first detected in 1983 and 1985, respectively. The aquifer supplies water for the Ontario municipal water system, domestic and industrial uses, and irrigation. In response...
    Resource Type:
    Masters Thesis
    Full Text:
    Gannett will report the results of the aquifer testing and the hydrogeological characterization

  • Evaluation of estuarine channel conditions in Coos Bay, Oregon using side-scan sonar

    Creator:
    Hartman, Gregory L.
    Abstract:
    Side-scan sonar records in Oregon's Coos Bay estuary navigation channels were obtained at intervals of two to three months during the November 1974 - October 1975 time period from Coos Bay Channel Mile 11+50 to 15+20, and from a reach in the Marshfield Channel. A limited side-scan survey effort was...
    Resource Type:
    Masters Thesis
    Full Text:
    in this report. A primary study task was to attempt identification of sediment types on the Coos

  • Investigation of the behavior of diagonally cracked full-scale CRC deck-girders injected with epoxy resin and subjected to axial tension

    Creator:
    Smith, Matthew T. (Matthew Todd)
    Abstract:
    Article 1: Behavior of Epoxy Injected Diagonally Cracked Full-Scale CRC Deck-Girders. Many cast-in place reinforced concrete deck-girder bridges (RCDG) remain in the national inventory and exhibit diagonal cracking. Epoxy injection has been in use for several decades as a method for sealing diagonal cracks, but the effects on girder behavior...
    Resource Type:
    Masters Thesis
    Full Text:
    realistic steel reinforcing details. No data are available for shear response of epoxy injected CRC

  • Strain distribution in OSB and GWB in wood frame shear walls

    Creator:
    Sinha, Arijit
    Abstract:
    The overall goal of this study was to gain an insight into the load sharing aspect between oriented strand board (OSB) and gypsum wall board (GWB) in shear wall assembly during racking load. More specifically the objectives of the study were to: (1) evaluate qualitatively the load sharing between OSB...
    Resource Type:
    Masters Thesis
    Full Text:
    created using DIC, strains only near fasteners are observed and no detectable strain is observed in the

  • Developing tools to improve tsunami resilient design of coastal structures

    Creator:
    Thomas, Seth Alan
    Abstract:
    Over the last decade the world has seen three major tsunamis strike the coasts of Indonesia, Samoa, and Chile. These tsunamis have caused significant losses of life and property on the coastal cities of these and nearby countries. The NEES (Network for Earthquake Engineering Simulation) Housesmash project was created to...
    Resource Type:
    Masters Thesis
    Full Text:
    relative to the baseline conditions without a seawall. Reduction factors ranged from 1.0 (no reduction

  • Cyclic triaxial testing of low- to moderate-plasticity silts

    Creator:
    Butler-Brown, Jason J.
    Abstract:
    This project report presents a laboratory investigation of the dynamic behavior of saturated alluvial silty soils from sites in Oregon and Washington. The focus of the study was to document the liquefaction susceptibility, post cyclic strength, and volumetric strain behavior of the silt soils based on cyclic, undrained triaxial compression...
    Resource Type:
    Masters Thesis
    Full Text:
    report presents a laboratory investigation of the dynamic behavior of saturated alluvial silty soils

  • The effect of boundary geometry on internal density currents in a density stratified reservoir

    Creator:
    Spurkland, Torbjorn
    Abstract:
    The effects of boundary geometry on internal density currents in a density stratified reservoir were investigated in a laboratory model. When water was simultaneously withdrawn and admitted to the reservoir, a complex current regime was established. The general flow pattern is described, and the influence of physical variables on the...
    Resource Type:
    Masters Thesis
    Full Text:
    Resources. Report no. KH -R -6) 23. Kuenen, Ph. H. Properties of turbidity currents of high den- sity

  • Experimental Investigation of the Effects of Embedded Rebar, Cracks, Chloride Ingress and Corrosion on Electrical Resistivity Measurements of Reinforced Concrete

    Creator:
    Morales, Monica
    Abstract:
    The effects of steel reinforcement, chloride-induced corrosion initiation, cracking and delamination on the electrical resistivity measurements using the Wenner probe technique were studied experimentally on custom-designed reinforced concrete slabs. Investigation parameters included (1) probe configurations with respect to rebar mesh, (2) rebar density, (3) epoxy coating on the rebar, (4)...
    Resource Type:
    Masters Thesis
    Full Text:
    saturated and semi-saturated concrete. Conductive cracks had no significant effect or under-measured

  • An anaerobic microcosm study of TCE transformation by microbes stimulated from the Gilbert-Mosley site, Wichita, Kansas

    Creator:
    Pon, George
    Abstract:
    A mix-culture of methanogenic and sulfate-reducing bacteria was capable of degrading trichloroethylene (TCE) to dichloroethylene (DCE). The culture was incubated under anaerobic conditions within a soil sample taken from Gilbert-Mosley site, Wichita, Kansas. To stimulate the growth of indigenous bacteria, a carbon and energy source was added in this microcosm...
    Resource Type:
    Masters Thesis
    Full Text:
    control to which no substrate was added showed no signs of TCE transformation. Addition of suitable

  • A study on the oxidation of sulfides in estuarine waters

    Creator:
    Korpalski, Thomas Paul
    Abstract:
    Waters of various salinities were secured from the Umpqua estuary, the Umpqua River, and the open ocean near the mouth of the estuary. The rate of oxidation of sulfides in these various waters was investigated to assess the potential longevity of free sulfides in estuarine waters. The rate of disappearance...
    Resource Type:
    Masters Thesis
    Full Text:
    disappearance of sulfides showed no simple rela-. tionship with salinity. Estuarine water exhibited the fastest

  • Determination of equilibrium partial pressure of ammonia gas above anaerobically digested sewage sludge

    Creator:
    English, Charles Joseph
    Abstract:
    A laboratory study of anaerobically digested sewage sludge was performed to measure equilibrium constants for ammonia in the sludge. Measured constants describing the solution and dissociation of ammonia in sludge were compared to theoretical constants obtained from thermodynamic data. No significant difference was found between these two sets of constants....
    Resource Type:
    Masters Thesis
    Full Text:
    constants obtained from thermodynamic data. No significant difference was found between these two sets of

  • Preliminary Assessment of Driver Parking Decisions From A Heavy Vehicle Driving Simulator To Inform Curb Management Decisions

    Creator:
    Liu, Yujun
    Abstract:
    As e-commerce and urban deliveries spike, there is an increasing demand for curbside loading/unloading space. However, commercial vehicle drivers face numerous challenges while navigating dense urban road networks. Previous literature on the topic of how commercial vehicle drivers make choices about when and where to park is scarce, and data...
    Resource Type:
    Masters Thesis
    Full Text:
    was no difference in average speed between 2 lanes and 4 lanes roadways. Analysis of participant eye

  • The effect of mixing on the oxygen uptake rate of estuarine bottom deposits

    Creator:
    Martin, Duane Collins
    Abstract:
    A study of the effect of mixing on the oxygen uptake rate of estuarine bottom deposits is presented. The method of study involved the mixing of samples of bottom deposits with the overlying water to result in concentrations of suspended matter in the same order as observed in the estuary....
    Resource Type:
    Masters Thesis
    Full Text:
    Engi- neering Center. Technical Report no. W 58-2) 24. Wyckoff, Bruce M. Rapid solids determination

  • An evaluation of planning for water quality control in the Willamette River Basin

    Creator:
    Kirkpatrick, Kenton
    Abstract:
    It is no longer possible in any area of the United States to formulate water resources plans for single purpose projects as has been done in past years. No longer can one of our greatest natural resources, water, be used solely for navigation, power generation, irrigation, or controlled for reducing...
    Resource Type:
    Masters Thesis
    Full Text:
    ' Proféssor) It is no longer possible in any area of the United States to form- ulate water resources

  • Seasonal variations in tidal dynamics, water quality and sediments in the Siuslaw Estuary

    Creator:
    Utt, Michael Ernest
    Abstract:
    Seasonal data on tides, water quality and sediments in the Siuslaw Estuary were collected. Tide and velocity data were analyzed to evaluate damping conditions in the estuary. The system was found to approximate a weakly damped standing wave. A strong relationship of damping conditions to river flow was observed. The...
    Resource Type:
    Masters Thesis
    Full Text:
    Oregon coast, at latitude 44 degrees North, about 160 miles south of the Columbia River. It has no

  • The Fundamental Behavior of CLT Floor-to-Wall Connections in Fire

    Creator:
    Redus, James Aaron
    Abstract:
    This thesis focuses on the fundamental behavior of CLT floor-to-wall connections during a fire. Cross-laminated timber (CLT) panelized structures rely on floor-to-wall connections for the load path and stability of the structure. Additionally, the fire performance of these connections is critical to prevent horizontal or vertical fire spread within these...
    Resource Type:
    Masters Thesis
    Full Text:
    connection have used varied testing methodologies and did not report data consistently. These variations

  • Transportation network connectivity, facilities encouraging walkability, and crime

    Creator:
    Bornasal, Floraliza B.
    Abstract:
    This thesis explores the relationship between crime, transportation network connectivity, and engineered facilities built to increase walkability through a case study of twenty-five sites within the city of Spokane, Washington. Using data spanning between 2008 and 2010, the author developed a GIS model representing conditions of the built environment, social...
    Resource Type:
    Masters Thesis
    Full Text:
    little to no evidence that the transportation network connectivity affected crime rates within the

  • Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

    Creator:
    Sapp, Mandy M.
    Abstract:
    Groundwater at Oak Ridge National Laboratory's Field Research Center (FRC) is contaminated with U(VI) and Tc(VII), has pH values as low as 3.3, and nitrate concentrations as high as 120 mM. The objective of this research was to determine if in-situ bio-immobilization is a viable treatment alternative for this water....
    Resource Type:
    Masters Thesis
    Full Text:
    no uranium reduction was detected. Results of the low nitrate (3 mM) column study indicate that once

  • The effect of selected insecticides upon biochemical oxidation

    Creator:
    Norris, Francis Warren, Jr.
    Abstract:
    A study to determine the effect of certain synthetic organic insecticides on the Biochemical Oxygen Demand (BOD) Test was performed. BOD tests on a standard glucose-glutamic acid substrate were conducted while in the presence of dieldrin, dichlorodiphenyltrichloroethane (DDT), or diazinon. From the BOD data, the following parameters were obtained: 1....
    Resource Type:
    Masters Thesis
    Full Text:
    concentrations tested, had no effect on either the lag period or the onset of nitrification. THE EFFECT OF

  • Stability of elastically restrained framed structures by matrix analysis

    Creator:
    Albertson, Oran Lester
    Abstract:
    It has been undertaken here to use the matrix method of structural analysis for the determination of the stability of elastically restrained, simple portal frames. This involves the formulation of the stiffness matrix of the structure in terms of the axial force in the members. The stability criterion, when applied...
    Resource Type:
    Masters Thesis
    Full Text:
    Civil Engineering, Structure and Materials Research Report No. 63 -4 on National Science Founda- tion

  • Wood materials and shearwalls of older light-frame residential structures

    Creator:
    Carroll, Cameron T.
    Abstract:
    Light-frame construction practices and materials have changed greatly over the past 100 years. Contemporary research has focused on modern construction; thus, we know a great deal about the behavior of modern lightframe buildings under lateral forces. However, there are many light-frame buildings that were built prior to the introduction of...
    Resource Type:
    Masters Thesis
    Full Text:
    test showed no significant change over time. Nails had average bending-yield strength of 97.3 ksi

  • Behavior of open grid steel bridge decks under service and fatigue loads

    Creator:
    Fetzer, Peter C.
    Abstract:
    Open grid steel bridge decks have been in use for nearly a century. These open grid decks provide an economical and lightweight alternative to traditional reinforced concrete decks. As the transportation infrastructure continues to deteriorate, open grid decks can be used as a cost effective way to rehabilitate structurally deficient...
    Resource Type:
    Masters Thesis
    Full Text:
    cracking in the weak direction, for which no design provisions currently exist. A comprehensive research

  • In-Plane Shear Performance of Cross-laminated Timber and Cross-laminated Timber Concrete Composite Diaphragm Connection Systems

    Creator:
    Taylor, Brad
    Abstract:
    Cross-laminated timber (CLT) panels have been gaining popularity as diaphragm elements in mid- to high-rise construction projects. In addition, CLT-concrete composite (CCC) diaphragms have been implemented to expand the use of CLT diaphragms. To understand the behavior of CLT and CCC diaphragms, this research effort sought to characterize the cyclic,...
    Resource Type:
    Masters Thesis
    Full Text:
    -tapping screws (STS) and that no group effect occurs for the tested STS spacings, which ranged from 100

  • A safety evaluation of turn lane-adjacent bike lane configurations in Portland, Oregon

    Creator:
    Wyman, Amy
    Abstract:
    The Manual on Uniform Traffic Control Devices prohibits positioning a bike lane right-adjacent to a vehicle turn-only lane to mitigate the potential for right-hook crashes. However, it provides no specific guidance on positioning with respect to bus-only lanes. This thesis describes a before/after safety evaluation of bike lanes positioned left...
    Resource Type:
    Masters Thesis
    Full Text:
    turn-only lane to mitigate the potential for right-hook crashes. However, it provides no specific

  • Crowdsourcing Data-driven Development of Bicycle Safety Performance Functions (SPFs) : Microscopic and Macroscopic Scales

    Creator:
    Chen, Chen
    Abstract:
    While riding bicycles has been promoted for its health, economic, and environmental benefits, it also complements other modes to complete a safe, efficient, and reliable transportation system. However, the dramatic increase of bicycle usage in the U.S. is accompanied by a growth of bicycle crashes. The U.S. Department of Transportation,...
    Resource Type:
    Masters Thesis
    Full Text:
    Performance Functions (SPFs), but no sophisticated SPFs have been established for bicycles. Therefore, the

  • Alkali-silica reaction in concrete containing recycled concrete aggregates

    Creator:
    Adams, Matthew P.
    Abstract:
    Using recycled concrete aggregate (RCA) as a replacement for natural aggregate in new concrete is a promising way to increase the overall sustainability of new concrete. This has been hindered, however, by a general perception that RCA is a sub-standard material due to the lack of technical guidance, specifically related...
    Resource Type:
    Masters Thesis
    Full Text:
    original research were developed to report on the findings of these studies. These publications provide

  • Aerobic cometabolism of chloroform by butane and propane grown microorganisms from the Hanford subsurface

    Creator:
    Kim, Young
    Abstract:
    Batch microcosm studies were carried out to screen for microorganisms from the subsurface of Hanford DOE site that could cometabolically transform chloroform (CF) under aerobic conditions. The potential need for CF bioremediation at the Hanford site has resulted from the large release of carbon tetrachloride (CT) to the subsurface, of...
    Resource Type:
    Masters Thesis
    Full Text:
    ammonia was very slow. Microorganisms stimulated on propene and octane showed no ability to transform CF

  • 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
    Full Text:
    predominantly marine type with little to no precipitation in the summer months, and heavy precipitation in the

  • 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
    Full Text:
    that although there was a close interaction between the pile-soil-cushion system and hammer that no

  • Chloride Binding of Portland Limestone Cement containing Supplementary Cementitious Materials

    Creator:
    Then, Nathalene WY
    Abstract:
    Chloride binding in Portland limestone cements (PLC) can be attributed to the chemical reaction between chloride ions and carboaluminate phases to form Friedel’s salt and the physical interaction between chloride ions and calcium-silicate-hydrates (C-S-H). This thesis examines the chloride binding of mortar samples containing varying amounts of limestone, fly ash,...
    Resource Type:
    Masters Thesis
    Full Text:
    OPC+10LS systems can be used as a direct substitute for OPC as there is no significant difference in

  • Seismic Performance of Retrofitted Reinforced Concrete Columns Including Soil Structure Interaction

    Creator:
    Parson, Lance
    Abstract:
    There are many existing bridges around the world that were designed without consideration for seismic effects. Many of these bridges were designed before modern earthquake engineering design standards and practices existed and thus are expected to perform poorly during strong ground shaking. Common structural deficiencies are found in their reinforced...
    Resource Type:
    Masters Thesis
    Full Text:
    residual drift due to self-centering capacity, and no loss of axial load capacity. Although the retrofit

  • Static and Wave Equation Analyses and Development of Region-specific Resistance Factors for Driven Piles

    Creator:
    Bougataya, Youssef
    Abstract:
    This study uses an existing database of dynamic loading tests of driven piles installed in the Puget Sound Lowlands to improve the reliability of axial performance. First, the unit shaft resistances developed from stress wave signal matching to dynamic records of pile installation are used to develop an effective stress-based...
    Resource Type:
    Masters Thesis
    Full Text:
    following pile installation, no reliable time-dependent relationship could be proposed. The study

  • Hydraulic experiments on impact forces from tsunami-driven debris

    Creator:
    Ko, Harrison T.
    Abstract:
    Impact by an idealized shipping container on a column were observed for tsunami flow in a large-scale wave flume modeled at the O.H. Hinsdale Wave Research Laboratory at Oregon State University. Two specimen types, aluminum and acrylic, were tested; and each specimen was tested in two orientations, longitudinal and transverse....
    Resource Type:
    Masters Thesis
    Full Text:
    have no significant impact on the mea­ sured peak impact force, however an increase of non-structural

  • Development of a method to elucidate biodegradation pathways of chlorinated one and two carbon compounds using a gas-permeable-membrane-supported methylotrophic biofilm

    Creator:
    Ryan, Kelly M.
    Abstract:
    A gas-permeable-membrane-supported (GPMS) biofilm consisting of methylotrophic bacteria was effective in degrading chlorinated methanes, ethanes, and ethenes. The biofilm was developed on a gas-permeable fabric (Goretex, W.L.Gore & Associates, Elkton, Maryland) that divided a reactor vessel into a liquid compartment and a gas compartment. Goretex is a nylon-backed teflon mesh...
    Resource Type:
    Masters Thesis
    Full Text:
    reactors. No metabolic products were detected, but it is apparent that the degradation rates of any