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Filtering by: Creator Higgins, C. W. Remove constraint Creator: Higgins, C. W. Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • Lamb Growth and Seasonal Herbage Production from Simple, Diverse, and Legume Pastures Established in an Agrivoltaic System

    Creator:
    Andrew, Alyssa C.
    Abstract:
    Agrivoltaic systems promote dual use of land by combining solar energy and agricultural production. Grazing sheep in these systems is popular but research on intentionally designed pastures to increase production is lacking. This study seeks to compare the herbage growth and lamb production in simple, diverse, and legume pasture mixes...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Chad W. Higgins Agrivoltaic systems promote dual use of land by combining solar energy

  • Analysis of conventionally reinforced concrete bridge girders for low-cycle fatique in shear

    Creator:
    Forrest, Richard W. B.
    Abstract:
    Increasing load magnitudes and loss of reinforcing steel cross-sectional area from corrosion creates the potential for low-cycle fatigue (LCF) in conventionally reinforced concrete (CRC) bridge girders lightly reinforced for shear. LCF of reinforcing steel may be of particular concern. Little data are available for LCF of reinforcing steel without stress...
    Resource Type:
    Masters Thesis

  • Development of a Fast Spectrum Test Loop at the Advanced Test Reactor

    Creator:
    Higgins, Anton
    Abstract:
    The United States currently has no infrastructure to provide a fast neutron flux for research purposes. With the increased interest in Sodium Fast Reactor (SFR) technology, this type of infrastructure is necessary for further development of key components such as Versatile Test Reactor. The purpose of this research is to...
    Resource Type:
    Masters Thesis
    Full Text:
    Higgins for the degree of Master of Science in Nuclear Engineering presented on December 11, 2019

  • Measuring Tomato Production and Water Productivity in Agrivoltaic Systems

    Creator:
    Al-agele, Hadi A.
    Abstract:
    Growing populations and industrialization rates across the world are leading to increased food and energy demand. The challenge of meeting this demand while also mitigating climate change impacts serves as a driving force for the development of renewable energies technologies. This study focuses on the role of Agrivoltaic systems in...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: Chad W. Higgins Abstract Growing populations and

  • Applying climate change information to hydraulic and hydrologic transportation infrastructure

    Creator:
    Al Naabi, Rawan Y.
    Abstract:
    Scour is the main cause of bridge failures in the United States. Bridge failures raise a hazard to the safety of the traveling public as well as the massive economic consequences due to the high cost of constructing a new or a replacement bridge. The Oregon Department of Transportation (ODOT)...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Christopher C. Higgins Scour is the main cause of bridge failures in the United States

  • 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:
    approved: ______________________________________________________ Christopher C. Higgins There are

  • Testing and evaluation of flexural reinforcing bars terminating in columns

    Creator:
    Koester, Carl C.
    Abstract:
    Capacity of transverse 1950's vintage reinforced concrete deck girder bridge bent caps with large straight bar anchorages were investigated and evaluated. Eleven subassemblage column specimens were examined with different anchorage lengths, bar groupings, amount of transverse steel, and externally applied axial force. Test results showed an increase in anchorage capacity...
    Resource Type:
    Masters Thesis
    Full Text:
    : Christopher C. Higgins Capacity of transverse 1950's vintage reinforced concrete deck girder bridge bent

  • Wind induced torsional fatigue behavior of truss bridge verticals

    Creator:
    Keller, Philipp
    Abstract:
    The Astoria-Megler Bridge is a 6.6 kilometer (4.1 mile) long bridge, connecting Oregon and Washington on US 101, with a continuous steel truss main span of 376 m (1232 ft). It is the second longest main span bridge of this type in the world. Due to vortex shedding, some of...
    Resource Type:
    Masters Thesis
    Full Text:
    Christopher C. Higgins The Astoria-Megler Bridge is a 6.6 kilometer (4.1 mile) long bridge, connecting

  • 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:
    : ______________________________________________________ Christopher C. Higgins Open grid steel bridge decks have been in use for nearly a century

  • Experimental and analytical investigation of ponding load effects on a steel joist roof system

    Creator:
    Stark, Duncan
    Abstract:
    Ponding of water on roof systems leading to collapse causes expensive damage and jeopardizes the life safety of building occupants. Current building codes and design specifications for flat roof systems offer minimal guidance in designing for ponding loads. The present research investigated ponding load effects on a long span, lightweight...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________________________ Christopher C. Higgins Ponding of water on roof systems leading to collapse causes