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  • 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:
    reimbursement of expenses may be obtained from the National Society of Professional Engineers, 2029 K Street

  • Automated Monitoring of Construction Operations for Data-Driven Decision Making

    Creator:
    Rashid, Khandakar, M.
    Abstract:
    The continuous improvement of construction operations requires a systematic approach of monitoring and making appropriate control actions. However, the lack of real-time information hinders this workflow and eventually compromises timely and effective decision-making. Project managers spend a great deal of time and effort to solve problems emerging from lack of...
    Resource Type:
    Dissertation
    Full Text:
    ............................................................ 37 Figure 2.8. Data augmentation using scaling

  • Reducing sediment production from forest roads during wet-weather use

    Creator:
    Toman, Elizabeth Myers
    Abstract:
    Forest roads produce fine sediment with traffic during wet weather. If the forest road is connected to a stream it can be a source of turbidity and fine sediment that may be detrimental to aquatic organisms especially salmonids. The goal of this work was to investigate turbid runoff during wet-weather...
    Resource Type:
    Dissertation
    Full Text:
    Philosophy in Forest Engineering and Civil Engineering presented August 3, 2007. Title: Reducing Sediment

  • 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
    Full Text:
    runoff of a 295 - square mile drainage of Ochoco National Forest in central Oregon was compared with the

  • Evaluation of alternate surfacing systems for temporary and intermittent use roads

    Creator:
    Takallou, Mojtaba B.
    Abstract:
    The purpose of this study was to provide the USDA-Forest Service, Bureau of Land Management (BLM), and other agencies or industries that may deal with temporary and intermittent use roads with the necessary background information for the identification, economic evaluation, and selection of the alternate surfacing systems and to determine...
    Resource Type:
    Dissertation
    Full Text:
    Construction Production Rate 207 LIST OF TABLES Table National Summary (By U.S. Forest Service Region

  • Opportunities and challenges for decision support systems in log truck scheduling and dispatching

    Creator:
    Kokenge, Kyler S.
    Abstract:
    The transportation of logs from the forest to the mill accounts for 25-50% of the delivered cost of wood, depending mostly on haul distance. Decision support systems (DSS) for log truck scheduling and dispatching have the potential to reduce transportation costs by optimally constructing routes, also known as schedules for...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Kyler S. Kokenge for the degree of Master of Science in Forest

  • Behavior of Cross-Laminated Timber Diaphragm Panel-to-Panel Connections with Self-Tapping Screws

    Creator:
    Sullivan, Kyle
    Abstract:
    The goal of this project is to contribute to the development of design values for cross-laminated timber (CLT) diaphragms in the seismic load-resisting system for buildings. Monotonic and cyclic tests to determine strength and stiffness characteristics of 2.44 m (8 ft) long shear connections with common self-tapping screws were performed....
    Resource Type:
    Masters Thesis
    Full Text:
    in the National Design Specification for Wood Construction and the International Building Code so

  • The effect of elevated temperature on mechanical behavior of structural wood and wood-based composites

    Creator:
    Sinha, Arijit
    Abstract:
    Engineers, in practice, are often faced with the challenge of evaluating a fire-damaged structure and developing a rehabilitation and retrofit plan. In order to decide on a rehabilitation and retrofit plan, information on thermal degradation of building materials and connections are vital. A critical knowledge gap exists in terms of...
    Resource Type:
    Dissertation
    Full Text:
    National Design Specifications (NDS) yield models for thermally degraded materials. Conventional tests

  • Evaluation of system effects and structural load paths in a wood-framed structure

    Creator:
    Martin, Kenneth G.
    Abstract:
    The objective of this project was to develop an analytical model of a light-framed wood structure using a prevalent structural analysis computer program in order to evaluate system effects and define load paths within the structure, especially under extreme wind events. Simplified modeling techniques and material definitions were developed and...
    Resource Type:
    Masters Thesis
    Full Text:
    , isotropic material properties. The NDS code (AF&PA 2005a) and the Wood Handbook (USDA 1999) were used to

  • A Regional-Scale Three-Dimensional Susceptibility Model for Enhanced Evaluation of Rainfall- and Seismically-Induced Landsliding

    Creator:
    Mathews, Nicolas
    Abstract:
    Shallow landslides are destructive natural hazards that result in widespread losses, both of infrastructure and lives, throughout the world. To help mitigate the impact of landslide hazards, they are commonly characterized across a regional scale by (1) their location and likelihood using susceptibility maps, (2) their magnitude and frequency using...
    Resource Type:
    Dissertation
    Full Text:
    ) their magnitude and frequency using geomorphic scaling laws, and (3) the magnitude of disturbance

  • 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
    Full Text:
    forested watershed, involving the associated timber harvest practices and forest road building, and (b

  • Prediction of monthly streamflows for Oregon coastal basins using physiographic and meteorological parameters

    Creator:
    Orwig, Charles Edwin
    Abstract:
    Prediction equations were developed for estimating the flow regime at ungaged stream locations in the Oregon coastal range. Principal components analysis was used to screen the initial data set of physiographic and meteorological parameters. The final regression equations for predicting mean monthly flow had standard errors of estimate ranging from...
    Resource Type:
    Masters Thesis
    Full Text:
    standard error of the forecast equations was 18 percent. The use of the National Weather Service's 30-day

  • 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
    Full Text:
    scaling of logs to best utilize the timber resources of the Cathlamet Managed Forest.. As the logs arrive

  • Remote Sensing Tools for Evaluating Climate Change Impacts in Coastal Environments

    Creator:
    Herrmann, Joan F.
    Abstract:
    Climate change has pervasive impacts on Earth’s diverse ecosystems. Observed and projected effects that impact coastal environments pose unique challenges. Coastal regions provide numerous ecosystem services (e.g., fisheries, nursery habitats, erosion control, and water filtering and detoxification), house 40% of the US population, and contribute to 58% of the national...
    Resource Type:
    Masters Thesis
    Full Text:
    detoxification), house 40% of the US population, and contribute to 58% of the national gross domestic product

  • Development of structural layer coefficients for open graded asphalt emulsion mixes

    Creator:
    Hatch, David Russell
    Abstract:
    This paper describes the development of structural layer coefficients for open graded asphalt emulsion surfacing layers which can be used with the AASHO pavement design method, as modified by the U. S. Forest Service, Region 6. A field survey conducted to document the history, performance and material characteristics of in-service...
    Resource Type:
    Masters Thesis
    Full Text:
    Ochoco National Forest. The success of this and other U. S. Forest Service projects has resulted in the

  • Effect of Hole Edge Distance on Strength of Through-Bored Utility Poles

    Creator:
    Romanaggi, Bennett T.
    Abstract:
    There are over 130 million wood poles supporting electrical transmission and distribution lines in the U.S. The vast majority of these poles are preservative treated to prolong their useful life. In some cases, however, the depth of treatment is relatively shallow, leaving a deep zone of moderately durable, untreated heartwood....
    Resource Type:
    Masters Thesis
    Full Text:
    process has been standardized through the American National Standards Institute (ANSI) with a 5

  • Numerical response of concrete-lined tunnels crossing active faults

    Creator:
    Lange, Stephanie
    Abstract:
    A challenge for municipal authorities of growing urban areas is to provide larger and faster transportation and utility networks that are safe and resilient to significant disruptions after an earthquake event and other disasters. Urban regions, like the San Francisco Bay or the Los Angeles area, are situated in seismically...
    Resource Type:
    Dissertation
    Full Text:
    successful application for the National Science Foundation Graduate Research Fellowship, which is greatly

  • Analysis of spatial data from terrain models for landslide predictive mapping

    Creator:
    Santha, Rubini
    Abstract:
    Landslides are a pervasive hazard that can result in substantial damage to properties and loss of life throughout the world. To understand the nature and scope of the hazard, landslide hazard mapping has been an area of intense research by identifying areas most susceptible to landslides in order to mitigate...
    Resource Type:
    Dissertation
    Full Text:
    Emission and Reflection Radiometer), NED (National Elevation Dataset) and LiDAR (Light

  • A Methodological Approach for Structural Health Monitoring of Mass-Timber Buildings Under Construction

    Creator:
    Baas, Esther J.
    Abstract:
    As mass-timber building construction rises around the globe, there exists the need to verify the long-term, in-situ behavior and performance of these structural systems. Structural health monitoring (SHM), generally defined as a damage detection strategy consisting of a network of sensors, a data acquisition system, and algorithms for data analysis,...
    Resource Type:
    Masters Thesis
    Full Text:
    monitoring under construction. The procedure was validated using SHM data from the George Peavy Forest

  • Numerical Modeling of Mass Timber Connections

    Creator:
    Hollenbeck, Sean R.
    Abstract:
    Cross-Laminated Timber (CLT) is a prefabricated building material that is relatively new to the United States and North America. It consists of no less than three layers of graded, dimensional lumber glued in alternating longitudinal and transverse layers to create a panel that can be used for various building applications...
    Resource Type:
    Masters Thesis
    Full Text:
    ) adopted yield mode equations that are presented in the Wood Handbook (Forest Products Laboratory 2010

  • Will wetlands restoration plans today still be effective tomorrow? Evaluation of performance of potential wetlands for peak flow reduction in future climate scenarios in the Eagle Creek Watershed, IN

    Creator:
    Walters, Kelli M.
    Abstract:
    Global climate change is expected to exaggerate the severity of floods and droughts and increase the frequency of extreme streamflow events in the Midwestern United States. Managing these projected impacts poses a major challenge for water resources, conservation, and land use management. Wetlands have been considered as a conservation strategy...
    Resource Type:
    Masters Thesis
    Full Text:
    from them. I would like to thank the National Science Foundation (Award #1014693, Award #1332385) for

  • Entering streamflow effects on currents of a density stratified model reservoir

    Creator:
    Elwin, Elmer Harvey
    Abstract:
    The effect of entering streamflow on currents of a density stratified reservoir has been studied in a laboratory model to provide insight into the prediction, control, and maintenance of quality water discharge from a thermally stratified reservoir. Twenty experiments were performed using various concentrations of a sodium chloride solution to...
    Resource Type:
    Masters Thesis
    Full Text:
    of the model reservoir to maintain a constant inflow and outflow rate of 12.6 cubic centimeters per

  • Nonlinear dynamic analysis of cable and membrane structures

    Creator:
    Lo, Alain
    Abstract:
    The nonlinear dynamic analysis of cable and membrane structures is presented in this study. Attention is given to the nonlinearities arising from large displacements, from nonlinear stress-strain relationships and from nonconservative loadings. The finite element method is used to model the cables and membranes. Curvilinear geometries of the elements are...
    Resource Type:
    Dissertation
    Full Text:
    support throughout his study. The financial support provided by the National Science Foundation through

  • Analytical framework for modeling scale-related variabilities in remote sensing

    Creator:
    Chen, Chaur-fong
    Abstract:
    A general analytical framework was established to investigate the scale-related variabilities in remote sensing. The variabilities were studied first by investigating canopy structure, canopy interaction with light, relation between spectral reflectance and plant phenological parameters. The variabilities simulated by the plant model were compared with the actual spectral data acquired...
    Resource Type:
    Dissertation
    Full Text:
    Feature Extraction 89 APPLICATIONS 99 Landuse Classification (texture feature) 99 Image Scaling for

  • Elevated Temperature Effects on the Shear Performance of a Cross-Laminated Timber (CLT) Wall-to-Floor Bracket Connection

    Creator:
    Mahr, Kolton J.
    Abstract:
    Connections in mass timber structural systems dissipate energy and transfer lateral forces from mass timber elements such as shear walls and diaphragms, providing critical load paths. Cross-laminated timber (CLT) is a prominent mass timber material used to manufacture wall and floor assemblies. Fire performance research of CLT walls and floors...
    Resource Type:
    Masters Thesis
    Full Text:
    the Engineered Wood Association and Forest Product Innovations resulted in the 2012 publication of

  • Decision-Making for Cross-Laminated Timber Modular Construction Logistics Using Discrete-Event Simulation

    Creator:
    Abiri, Bahar
    Abstract:
    The two primary considerations for construction project management are budget and time management. Modular construction has the potential to improve construction productivity by minimizing time and costs while improving safety and quality. Cross-Laminated Timber (CLT) panels are beneficial for modular construction due to the high level of prefabrication, adequate dimensional...
    Resource Type:
    Masters Thesis
    Full Text:
    ) ........................................ 9 Figure 2.3 CLT panel Layup (CLT handbook, 2013

  • Simulation of Heat Transfer Through Soil for the Investigation of Wildfire Impacts on Buried Utilities

    Creator:
    Richter, Edward G.
    Abstract:
    Wildland urban interface (WUI) communities in the Western United States have recently dealt with historic and devastating wildfires year after year. The fires have cost tens of billions in damage, burned tens of thousands of structures, displaced thousands of residents, and killed over one hundred people. The 2017 Tubbs fire...
    Resource Type:
    Capstone Project
    Full Text:
    what is found in a heavy brush forest (Chandler et al. 1983). In WUI communities, housing density is

  • Performance-Based Design Methodology for Using Emergent Vegetation to Mitigate Wave Overtopping

    Creator:
    Ostrow, Kayla
    Abstract:
    To facilitate the design of Natural and Nature-Based Features (NNBF) for flood protection, this thesis expands an existing engineering design methodology to NNBF systems. The existing approach is a Level III reliability method for the performance-based design of traditional coastal engineering systems. The expanded methodology incorporates uncertainties inherent to both...
    Resource Type:
    Masters Thesis
    Full Text:
    the US Army Corps of Engineers through project number W912HZ2120045 and National Science Foundation

  • Effect of constituent materials and curing methods on the abrasion resistance and durability of high performance concrete for pre-cast pre-stressed bridge deck slabs

    Creator:
    Keshari, Shweta
    Abstract:
    This thesis is the consequence of a research effort undertaken by the School of Civil and Construction Engineering at Oregon State University and funded by the Oregon Department of Transportation (ODOT) and the Federal Highway Administration (FHWA). The principal objective of the effort was to reduce the life cycle cost...
    Resource Type:
    Masters Thesis
    Full Text:
    ........................................................ 85 26: Surface scaling clearly evident for edge during freeze and thaw cycle for control.... 87 27

  • Preparation and laboratory evaluation of stationary-phase iron-oxide-based adsorbents for removal of metals from waste waters

    Creator:
    May, Michael Lee
    Abstract:
    Several potential sorbent materials containing iron oxides were prepared and evaluated for potential to remove divalent metals from waste waters. These included a ferrihydrite-coated sand, maghemite incorporated in Dowex[Trademark] ion exchange resin, gothite and two thermally activated ferrihydrites. Attempts to prepare sorbents from steel shot by coating with ferrihydrite or...
    Resource Type:
    Masters Thesis
    Full Text:
    experiments was provided through Dr. John Simonsen, Oregon State University Forest Research Laboratory

  • Mapping Nearshore Bathymetry with Spaceborne Data Fusion and State Space Modeling

    Creator:
    Forfinski-Sarkozi, Nicholas A.
    Abstract:
    Despite numerous techniques for measuring and estimating water depth, bathymetry in the nearshore zone is notoriously difficult to map. Dangerous sea states, noisy environmental conditions, and expensive survey operations, particularly in remote areas, contribute to the difficulties of obtaining data along the coast. Global datasets, derived mainly from satellite altimetry...
    Resource Type:
    Dissertation
    Full Text:
    coincides with the 1-m resolution National Agriculture Imagery Program (NAIP) imagery shown above (i.e

  • Hydrodynamic Modeling of Submerged Wave Energy Converters: Power Take-Off Mooring Configuration Effect on Power Performance

    Creator:
    Meek, Moira H.
    Abstract:
    Wave energy converters (WECs) show promising potential to significantly contribute to global renewable energy goals. Numerous WEC designs have been proposed and investigated, but wave energy conversion technology has yet to reach convergence in the same way wind or solar has. Of the designs currently in existence, surface-piercing WECs are...
    Resource Type:
    Masters Thesis
    Full Text:
    structures such as moorings or ropes. Uses a cubic-spline lumped mass cable model. Cable ends are defined in

  • 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

  • Tsunami-induced Soil Instability

    Creator:
    Fischer, Rachael Marie
    Abstract:
    Recent tsunami field surveys from the 2011 Great East Japan Earthquake and Tsunami have recorded numerous examples of tsunami-induced soil instability: significant scour around foundations, foundation failure of piles, and other damage caused by liquefaction. From the observations of soil instability leading to the failure of critical coastal structures, it...
    Resource Type:
    Masters Thesis
    Full Text:
    scaling parameters are introduced: u′ = √ gαLu, η′ = αLη, x′ = Lx, t′ = √ L αg t, (2.4) where L is any

  • Performance-based seismic design of light-frame shearwalls

    Creator:
    Kim, Jun Hee
    Abstract:
    Performance-based design has gained interest in recent years among structural designers and researchers. Performance-based design includes selection of appropriate building sites, structural systems and configurations, as well as analytical procedures used in the design process, to confirm that the structure has adequate strength, stiffness and energy dissipation capacity to respond...
    Resource Type:
    Dissertation
    Full Text:
    from the CUREE-Caltech Woodframe Project and the National Science Foundation through Grant No. CMS

  • Stream Temperature Modeling for Marys River Watershed

    Creator:
    Mustafa, Mamoon
    Abstract:
    High water temperatures in rivers have detrimental effects on riverine water quality and ecology. In this study, two river temperature models, within the agricultural watershed model Soil and Water Assessment Tool (SWAT), were investigated for their ability to simulate water temperatures accurately throughout the year. The original temperature model within...
    Resource Type:
    Masters Thesis
    Full Text:
    sometimes dropping below a cubic meter per second. The base flow is a major contributor to the flow of the

  • A socio-technical study on the improved characterization of stakeholder behaviors and stream temperature in design of watershed conservation practices for climate change adaptation

    Creator:
    Noa-Yarasca, Efrain
    Abstract:
    Characterizing stakeholder behavior when making decisions in watershed management is a great challenge for planners, not only because plans are associated with physical uncertainties but also because stakeholders’ behaviors are influenced by numerous factors. Since stakeholders’ decision-making is linked to multiple types of uncertainty, communication of uncertainty to stakeholders by...
    Resource Type:
    Dissertation
    Full Text:
    .................................................. 52 Figure 3.6. Multidimensional Scaling for the E-PVQ items

  • The effects of land use on stream nitrate concentrations : from the catchment scale to the regional scale

    Creator:
    Poor, Cara J.
    Abstract:
    This work furthers the understanding of processes occurring in catchments that affect stream nitrate concentrations using two different approaches: a temporally intensive case study of three headwater catchments with varying land use (through storm event monitoring) and a spatially intensive study on the regional scale (through statistical modeling) of 1st-4th...
    Resource Type:
    Dissertation
    Full Text:
    tum cause hypoxia and "dead" zones for fish (National Science and Technology Councii 2000; Rabalais

  • 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:
    Mauritania International boundary (Senossi)or division (Gainbis) bound e National capital . Region or

  • Cross-Laminated Timber Shear Walls with Toe-Screwed and Slip-Friction Connections

    Creator:
    Fitzgerald, Dillon M.
    Abstract:
    Timber engineering is currently in the midst of a significant evolution due to the rise of mass timber products, like cross-laminated timber (CLT). Increasing numbers of structural engineers are facing the challenge of designing lateral-force-resisting systems (LFRS) for multistory CLT structures. LFRS solutions such as steel frames, concrete cores, or...
    Resource Type:
    Dissertation

  • New Techniques to Monitor and Characterize Landslide Behavior and Controls Using Digital Terrain Models

    Creator:
    Senogles, Andrew
    Abstract:
    Coastal landslides and erosion are major natural hazards resulting in unstable slopes, constituting immense challenges to modern infrastructure. Developing, maintaining, and performing risk assessments of infrastructure on, or close to, these hazards require a detailed understanding of the geophysical processes destabilizing the slope. These efforts start with the collection of...
    Resource Type:
    Dissertation
    Full Text:
    each fit. The lower magnitude of the scaling exponent (β) in the scour and transition zones

  • Development of rapid visual screening tool for seismic evaluation of wood-frame dwellings

    Creator:
    Lucksiri, Kraisorn
    Abstract:
    During the past several decades, earthquakes have caused extensive damage to buildings, including wood-frame, single-family dwellings, in the United States. In order to mitigate future losses, existing buildings in earthquake prone areas should be evaluated for their seismic safety. This is also an important issue for buildings in Oregon due...
    Resource Type:
    Dissertation
    Full Text:
    buildings in the city. This excluded lakes, forest, or agricultural lands with few residential buildings

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

    Creator:
    McKenzie, David Roller
    Abstract:
    During 1973 data was collected to analyze the seasonal variations of the tidal dynamics, water quality and sediments of the Alsea Estuary. A summary of historical information with a list of all known alterations to the estuary was made. A complete physical description, including the geographical setting and mixing classification...
    Resource Type:
    Masters Thesis
    Full Text:
    conducted throughout the estuary's drainage basin, much of which lies in the Siuslaw National Forest

  • Multi-Scale Dynamic Monitoring and Behavior of Cross-Laminated Timber Elements and Systems

    Creator:
    Mugabo, Ignace
    Abstract:
    Cross-Laminated Timber (CLT) is one of the latest engineered wood products to show promising structural features for a variety of structural purposes including resisting lateral loads. For CLT to be widely adopted, its modal behavior needs to be fully evaluated through experimental and numerical methods. It is important to the...
    Resource Type:
    Dissertation
    Full Text:
    Design Institute at Oregon State University; - The U.S. Department of Agriculture National Institute of

  • Evaluation of fabric reinforcement of the roadway structure

    Creator:
    Lavansiri, Direk
    Abstract:
    An evaluation of fabric reinforcement of the roadway structure is made. The study includes a parametric analy sis using layered elastic theory and a series of large scale model tests. The parametric. study analyzes the stresses and strains of roadway structures with a fabric layer between tna surface layer and...
    Resource Type:
    Dissertation
    Full Text:
    bearing capacity subgrades in forest and other low volume roads. Figure 1.1 shows a typical use of a

  • Regional and Site-Specific Vulnerabilities of the Western Power Grid from a M9.3 Cascadia Subduction Zone Earthquake

    Creator:
    Lathrop Eve D.
    Abstract:
    The likelihood of a Cascadia Subduction Zone (CSZ) earthquake is estimated between 37 to 42% in the next 50 years, leading to strong shaking, liquefaction, landsliding, and other seismic ground failure resulting in major impacts to critical lifelines such as the western power grid. Electrical power is essential for continued...
    Resource Type:
    Masters Thesis
    Full Text:
    Portland State for providing data for this project. Thank you to the National Science Foundation for

  • Assessing the effectiveness and environmental impacts of using natural flocculants to manage turbidity

    Creator:
    Kegley, Laura J.
    Abstract:
    The objective of this research was to determine the feasibility of using chitosan as a natural flocculant to control turbidity during in-stream construction work. A series of field tests in Oak Creek, Corvallis, OR were conducted in order to test the effectiveness for turbidity control and the environmental impacts of...
    Resource Type:
    Masters Thesis
    Full Text:
    amendment provides the basis for the National Pollutant Discharge Elimination System (NPDES) Stormwater

  • Rigorous 3D Point Cloud Quality Assessment

    Creator:
    O'Banion, Matthew S.
    Abstract:
    The capabilities of modern three-dimensional (3D) capture technology such as laser scanning and image-based 3D reconstruction are well suited to enhance the practice and research of civil engineering. However, given the often-overwhelming focus placed on the incredible capabilities of these tools and techniques, it is important to investigate the limitations...
    Resource Type:
    Dissertation
    Full Text:
    pursue a career in academia. The work included in this dissertation was supported by the National

  • 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
    Full Text:
    resources to this research effort: Rainer Bleck, National Center for Atmospheric Research. James

  • Examination of lateral stiffness and strength of pitched residential roof diaphragms with implications for seismic design.

    Creator:
    Kirkham, William J.
    Abstract:
    There are about 80 million single-family dwellings (SFD) in the United States, predominantly of wood-frame construction. Of these, 68% are owner occupied. A home is typically the largest single investment of a family, and is often not covered by earthquake insurance, even where it is available. Of all SFD in...
    Resource Type:
    Dissertation
    Full Text:
    materials. Concerns about the applicability of scaling factors to wood, a natural product with a cellular

  • Cost-Benefit Evaluation of Energy-Efficient Building Strategies in Single-Family Affordable Housing

    Creator:
    Iliff, Helen M.
    Abstract:
    The goal of this thesis is to ease the adoption of energy-efficient (EE) building strategies for affordable homes in the United States (US). Low-wage earning households spend nearly three times the proportion of their gross annual income on home energy bills resulting in higher energy burden for them when compared...
    Resource Type:
    Masters Thesis
    Full Text:
    Organization for Standardization LBNL Lawrence Berkeley National Laboratory LANL Los

  • Engineering Services of Submerged Aquatic Vegetation (SAV): Investigation of the Land-Building and Energy-Attenuating Properties of SAV Habitats Across Spatial Scales

    Creator:
    Holzenthal, Elizabeth R.
    Abstract:
    Submerged aquatic vegetation (SAV) species, such as seagrasses, are highly valued in estuaries because of the many economic, ecological, and cultural services that they provide, including shelter for fisheries, minimizing water turbidity, and improving am-bient water quality. SAV can also alter its physical environment by attenuating wave and current velocities,...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . 3 2.1 Site map of the CBE (National Weather Service, [Online]). SAV habi- tats used to parameterize

  • Numerical Studies on Fluid-Structure Interaction and Applications

    Creator:
    Chen, Ming
    Abstract:
    Fluid-structure interaction (FSI) has been of significant research interest worldwide over the past several decades because of its variety of applications in both offshore and coastal engineering. Researchers analyzing FSI systems rely heavily on experimental tests in model scale in laboratories or large-scale sea trials. However, these tests are often...
    Resource Type:
    Dissertation
    Full Text:
    Garcia-Medina, Luca Castrucci, and Wei- cheng Wu from Pacific Northwest National Labortoray (PNNL); Phil

  • FATE group decision support system in transportation decision making

    Creator:
    Taekratok, Thaweesak
    Abstract:
    Two interesting challenges have been created in the traditional transportation planning process through recent adoption of more interactive roles by Federal, State and local transportation agencies and of those representing the communities being impacted by proposed transportation projects. First, the decision-making groups that formerly included solely transportation and related professionals...
    Resource Type:
    Dissertation

  • From Perception to Planning : Adaptation in Flood-risk Communities

    Creator:
    Gomez, Luis A.
    Abstract:
    This research asserts that flood risk perception of individuals living in floodplains influences their preparedness for taking actions to protect themselves from flood hazards. The results of this research are backed up by quantitative analysis of survey responses of individuals living in floodplains of Corvallis, OR in the USA. The...
    Resource Type:
    Dissertation

  • The Art of Reducing Coastal Hazard Complexity: Coupling Physics and Probability to Understand Extremes, Variability, and Climate-dependence

    Creator:
    Anderson, Dylan L.
    Abstract:
    Coastal hazards are the result of numerous physical processes cumulatively causing water levels to flood and erode the land. The waves, storm surges, tides, and run-off contributing to elevated water levels are each the product of chaotic and random weather patterns. These stochastic weather patterns dissipate energy in Earth's climate...
    Resource Type:
    Dissertation
    Full Text:
    University and the National Science Graduate Research Fellowship for making this degree financially

  • 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:
    ) .......................................................................... 5 Figure 2.2: Relation of Strength to Duration of Load, CD (Forest Products Laboratory, 2010

  • Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

    Creator:
    Michalsen, Mandy M.
    Abstract:
    Metal and hydrogen ion acidity and extreme nitrate concentrations typical of Department of Energy (DOE) legacy waste sites pose formidable challenges to successful implementation of in situ bio-immobilization. Intermediate-scale (~ 2.5 m), flow through models of an in situ bio-barrier were constructed to investigate U and Tc removal from groundwater...
    Resource Type:
    Dissertation
    Full Text:
    with scientists at major research universities and national research laboratories. For example, iron

  • Watershed modeling at Yucca Mountain, Nevada

    Creator:
    Britch, Michael J.
    Abstract:
    Studies are currently underway to determine the suitability of Yucca Mountain in Nevada as the nation's first high-level nuclear waste repository. Values of net infiltration are required to determine pre-waste emplacement groundwater travel times and the performance of the repository as a waste containment system. The objective of this study...
    Resource Type:
    Masters Thesis
    Full Text:
    . Estimates of annual net infiltration for each zone were obtained by applying a scaling factor to AAP (Table

  • Towards the Development of Performance-Based Concrete Mixtures Made with Modern Cementitious Materials Using Thermodynamic Modeling

    Creator:
    Bharadwaj Ravi, Keshav
    Abstract:
    This thesis builds on a modeling tool that has been developed to link thermodynamic modeling and concrete performance. This tool is intended to predict the performance for modern concrete mixtures made with ordinary portland cement (OPC), conventional and novel supplementary cementitious materials (SCMs), and limestone (Ls). The first part of...
    Resource Type:
    Dissertation

  • Incipient motion and particle transport in gravel-bed streams

    Creator:
    Matin, Habib
    Abstract:
    The incipient motion of sediment particles in gravel-bed rivers is a very important process. It represents the difference between bed stability and bed mobility. A field study was conducted in Oak Creek, Oregon to investigate incipient motion of individual particles in gravel-bed streams. Investigation was also made of the incipient...
    Resource Type:
    Dissertation