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Filtering by: Creator West, Duane C. Remove constraint Creator: West, Duane C. Academic Affiliation School of Civil and Construction Engineering Remove constraint Academic Affiliation: School of Civil and Construction Engineering Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • 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

  • Freeze-thaw durability of reinforced concrete deck girders strengthened for shear with surface-bonded carbon fiber-reinforced polymer

    Creator:
    Mitchell, Mikal Maxwell
    Abstract:
    Long-term durability of surface-bonded carbon fiber-reinforced polymer (CFRP) U-wraps for shear strengthening of reinforced concrete (RC) bridge members remains uncertain due to the limited field experience with these materials. This paper provides experimental results from the testing of full-scale RC bridge girder specimens after exposure to prolonged freeze-thaw cycling. CFRP...
    Resource Type:
    Masters Thesis
    Full Text:
    : Christopher C. Higgins Long-term durability of surface-bonded carbon fiber-reinforced polymer (CFRP) U

  • New acoustic emission applications in civil engineering

    Creator:
    Schumacher, Thomas
    Abstract:
    Non-destructive testing methods and applications have become of increasing interest due to the worldwide aging and deteriorating infrastructure network. In the field of Civil Engineering, bridges and bridge components as well as non-structural elements such as roadway pavements for example, are affected. In particular, the Acoustic Emission (AE) technique offers...
    Resource Type:
    Dissertation
    Full Text:
    C. Higgins Non-destructive testing methods and applications have become of increasing interest

  • Flexural steel anchorage performance at diagonal crack locations

    Creator:
    Triska, Mary Ann
    Abstract:
    Large numbers of reinforced concrete deck girder bridges that were constructed during the interstate system expansion of the 1950s have developed diagonal cracking in the stems. Compared to the present AASHTO-LRFD standards, the provisions of the 1950s allowed for higher shear stress in the concrete, thus reducing the amount of...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ______________________________________________________ Christopher C. Higgins

  • Experimental and analytical evaluation of conventionally reinforced deck-girder bridge bent caps with vintage details

    Creator:
    Senturk, Ahmet Ekin
    Abstract:
    Many conventionally reinforced concrete deck girder (RCDG) bridges were built in the US during the 1950s, throughout the expansion of the Interstate System. Designs followed the AASHO standard of the time, which permitted higher shear stress in concrete and reduced detailing requirements than permitted by current specifications. Many of these...
    Resource Type:
    Dissertation
    Full Text:
    Deck-Girder Bridge Bent Caps with Vintage Details Abstract approved: Christopher C. Higgins

  • Applications of Marine Radar Wave Observation Systems

    Creator:
    Meskill, Shay J.
    Abstract:
    This project utilized both shore-based and shipboard commercial marine radar technology to collect wave statistics. In the first application a shore-based system was installed at Yaquina Bay in Newport, Oregon in order to collect real-time wave information. This information was collected under the auspices of the Northwest Association of Networked...
    Resource Type:
    Capstone Project
    Full Text:
    Approved Merrick C. Haller, Major Professor, representing Civil Engineering

  • Post-wildfire Investigation of Civil Infrastructure Following the 2018 Camp Fire

    Creator:
    Schulze, Stefanie S.
    Abstract:
    Wildland-urban interface (WUI) communities, where forested land boundaries or intermixes with infrastructure, are quickly growing in the US. WUI communities have grown substantially from 1990 to 2010, with an increase of 12.7 million houses and 25 million people. Wildfires encroaching on WUI communities can cause damage to both above ground...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________ Erica C. Fischer Wildland-urban

  • Influence of diagonal cracks on negative moment flexural anchorage performance in reinforced concrete bridge girders

    Creator:
    Goodall, Joshua K.
    Abstract:
    Large numbers of vintage reinforced concrete deck-girder bridges remain in the national bridge inventory. Many of these exhibit diagonal cracking and other distress. Due to the design practices of the time, it is common to observe cracks at locations where flexural reinforcing steel is terminated along the span. The presence...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________________________ Christopher C. Higgins Large numbers of vintage reinforced concrete deck-girder bridges

  • Environmental durability of reinforced concrete deck girders strengthened with surface-bonded carbon fiber-reinforced polymer

    Creator:
    Sopal, Gautam Jayant
    Abstract:
    Long-term durability of surface-bonded carbon fiber-reinforced polymer (CFRP) for shear strengthening of reinforced concrete (RC) bridge members remains uncertain due to the limited field experience with these materials. This paper provides experimental results from the testing of full-scale RC bridge girder specimens after exposure to prolonged environmental exposure and combined...
    Resource Type:
    Masters Thesis
    Full Text:
    with Surface-Bonded Carbon Fiber-Reinforced Polymer. Abstract approved: Christopher C

  • Shear repair methods for conventionally reinforced concrete girders and deep beams

    Creator:
    Howell, Daniel A.
    Abstract:
    Many conventionally reinforced concrete deck girder bridges (RCDG) and their intermediate supporting bent caps were designed during the Eisenhower interstate era of the 1950’s with the AASHO design equations at the time, which subsequently place higher demand on the concrete. The referenced components may exhibit diagonal cracking due to the...
    Resource Type:
    Dissertation
    Full Text:
    : _______________________________ Christopher C. Higgins Many conventionally reinforced concrete deck girder bridges (RCDG