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Filtering by: Creator Brevig, Rod E. Remove constraint Creator: Brevig, Rod E. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • The seismic vulnerability of sheet pile walls

    Creator:
    McCullough, Nason J.
    Abstract:
    The seismic performance of port structures has been well documented following recent earthquakes, and indicates that port structures are highly susceptible to earthquake-induced damages. These damages are primarily due to soil liquefaction and the associated ground failures. Sheet pile bulkheads provide vital intermodal and lifeline transportation links between water-side and...
    Resource Type:
    Masters Thesis
    Full Text:
    Vulnerability of Sheet Pile Walls. Abstract approved: Stephen E. Dickenson The seismic performance of port

  • A Multivariate Comparison of Drone-Based Structure from Motion and Drone-Based Lidar for Dense Topographic Mapping Applications

    Creator:
    Simpson, Chase H.
    Abstract:
    Unmanned aircraft systems (UAS), also known as drones, are an increasingly popular method of collecting surveying and mapping data. Two common drone-based mapping techniques are lidar and structure from motion (SfM) photogrammetry, and a frequently-heard (yet nearly impossible to answer) question is: “which is better?” The most common metric for...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Christopher E. Parrish Unmanned aircraft systems (UAS), also known as drones, are an

  • Diffusion of selected radionuclides through Hanford Trench 8 soil material

    Creator:
    Schwab, Kristen E.
    Abstract:
    Shallow land burial in vadose zone sediment at the Hanford Site in Washington is being considered for the disposal of Category 3 low-level waste. A series of column experiments were conducted to evaluate and model the performance of the soil surrounding the trench encasement material for iodine-129 and technetium-99 by...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Kristen E. Schwab for the degree

  • Structural Effects of Hydraulic Loading and Drainage of Ecoroofs and Preliminary Consideration of Associated Design Loading Scenarios

    Creator:
    Thompson, Lucas E.
    Abstract:
    As ecoroofs have become more widespread throughout the U.S., it has become increasingly important to understand their structural behavior. The purpose of this research was to investigate the load effects exerted on a roof structure with an ecoroof during rain events and the subsequent drainage period, with the intention of...
    Resource Type:
    Capstone Project

  • Scourability of weak rock in the Oregon Coast Range

    Creator:
    Baillie, Michael W.
    Abstract:
    The undermining of bridge foundations can lead to either costly repairs or a bridge collapse. These foundations must be designed to counter the effects of scour. Current practice does not allow for accurate estimates of scour in erodible rock. Scour in rock can be related to geotechnical and hydraulic properties....
    Resource Type:
    Masters Thesis
    Full Text:
    Approved: Stephen E. Dickenson The undermining of bridge foundations can lead to either costly repairs

  • Efficient Topobathymetric Mapping and 3D Spatial Analysis of Estuaries Using Multi-Platform, Multi-Temporal Data

    Creator:
    Lambert, Selina E.
    Abstract:
    Frequent 3D spatial mapping of estuaries is critical to understanding and modeling changes that can impact ecological health (e.g., water quality) and ecosystem services (e.g., aquaculture, nutrient cycling, and shoreline stabilization). However, obtaining accurate, repeat topobathymetric data for estuaries is a major challenge. Because shallow estuaries are typically not used...
    Resource Type:
    Masters Thesis
    Full Text:
    , so the length of the attachable rod tip was subtracted to correct for the depth to which the tip

  • Accuracy assessment of LiDAR point cloud geo-referencing

    Creator:
    Williams, Keith E.
    Abstract:
    Three-dimensional laser scanning has revolutionized spatial data acquisition and can be completed from a variety of platforms including airborne (ALS), mobile (MLS), and static terrestrial (TLS) laser scanning. MLS is a rapidly evolving technology that provides increases in efficiency and safety over static TLS, while still providing similar levels of...
    Resource Type:
    Masters Thesis
    Full Text:
    from LiDAR AN ABSTRACT OF THE THESIS OF Keith E. Williams for the degree of Master of

  • Of Planes and Plumblines: Map Projections and Differential Leveling in a GNSS-based 3D Geodetic Framework

    Creator:
    Dennis, Michael L.
    Abstract:
    Modern geospatial data are frequently represented in some type of three-dimensional (3D) coordinate system, for example geodetic latitude, longitude, and ellipsoid height (φ, λ, h) derived from Global Navigation Satellite Systems (GNSS). But for engineering and surveying work, φ, λ, h coordinates are usually converted to a topocentric system consisting...
    Resource Type:
    Dissertation
    Full Text:
    Christopher E. Parrish Modern geospatial data are frequently represented in some type of three

  • 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:
    Testing of Low- to Moderate- Plasticity Silts. Abstract approved: Stephen E. Dickenson This project

  • Interstitial fluid mixing in estuarine benthic sediments

    Creator:
    Boyce, Allen R.
    Abstract:
    A method of measuring interstitial fluid mixing rates for evaluation of exchange between pore water of estuarine benthic sediments and the overlying water in a bay is presented. Pore water movement is monitored by reducing conductivity of the interstitial fluid within a zone of the benthic sediment to a depth...
    Resource Type:
    Masters Thesis
    Full Text:
    __Redacted for Privacy Abstract approved: Dr. Charles E. Wicks A method of measuring interstitial fluid