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Filtering by: Creator Stegman, D. R. Remove constraint Creator: Stegman, D. R. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Multi-objective Optimization of Reservoir Operation Under Uncertainty with Robust and Flexible Decision Variables

    Creator:
    Hosseini, Parnian
    Abstract:
    Optimization of reservoir operation is involves various competing objectives for a scarce resource (water). To find the optimal operation of reservoirs, it is essential to consider multiple objectives simultaneously. There are various sources of uncertainty associated with the reservoir operation problem that should be considered as well. The overarching goal...
    Resource Type:
    Dissertation
    Full Text:
    bounds for first decision variable for all the Pareto solutions; and D) Flexible bounds for second

  • Trade-offs between geometric design standards and safety for low volume roads

    Creator:
    Kornsombut, Aram
    Abstract:
    Geometric design standards have not been developed specifically for low volume roads. Design standards and criteria are extrapolated from higher standard roadways that are often not relevant to low volume roads. Safety is a primary criterion used for selection of design standards along with economic, financial, social and environment factors....
    Resource Type:
    Masters Thesis
    Full Text:
    Geometric Design Standards and Safety for Low Volume Roads Abstract approved: Redacted for Privacy Dr. R

  • Computerized safety analysis technique for secondary highways

    Creator:
    Nichols, Kevin Scott
    Abstract:
    Evaluation of the safety hazards along a highway is usually performed at specific locations and on known hazards. But, it is also important to find any unrecognized hazards and their locations. Many factors contribute to accident potential, and the combined effect of several of them could produce a hazard that...
    Resource Type:
    Masters Thesis
    Full Text:
    ). 3. The distance of the obstacle from the edge of the pavement (d) - The probability that a vehicle

  • A method for programming maintenance on paved forest roads

    Creator:
    Chastain, Edward Oran
    Abstract:
    The development of a pavement management system for low-volume roads is a difficult task. There are many interrelated activities that must be considered, such as planning, design, construction, maintenance, and pavement evaluation. This paper addresses the evaluation and maintenance components of a pavement management system for low-volume roadways and provides...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: Redacted for privacy Dr. R. D. La'on The development of a pavement management system

  • A method for quantifying macroporosity

    Creator:
    Vermeul, Vincent R.
    Resource Type:
    Masters Thesis
    Full Text:
    MACROPOROSITY. PART 1. METHODOLOGY V. R. Vermeul, J. D. Istok and J. L. Pikul ABSTRACT A method was developed

  • Modeling hydraulic dredge spoil fate

    Creator:
    Tseng, Ying-chuan
    Abstract:
    Hydraulic dredging is and most certainly will remain a primary means of maintaining and improving ship channels and for land reclamation in near-shore water. The study of which this thesis describes a part is intended to develop a method of predetermining the immediate disposition of sand spoils from hydraulic dredging...
    Resource Type:
    Masters Thesis
    Full Text:
    are due to Dr, J. R. Bell. and Dr. R. D. Layton for serving as committee members. It is not possible

  • Roughness and geometry effects of engineered log jams on 1-D flow characteristics

    Creator:
    Valverde, Rachelle S.
    Abstract:
    The re-introduction of large woody debris (LWD) into streams and rivers for stream restoration purposes is rapidly growing. Engineered log jams (ELJs) are man-made structures intended to mimic natural LWD structures, designed and installed to protect stream banks from erosion while increasing habitat diversity. Several studies have evaluated the flow...
    Resource Type:
    Masters Thesis
    Full Text:
    Roughness and Geometry Effects of Engineered Log Jams on 1-D

  • 3-D finite element modeling in OpenSees for bridge live-load girder distribution factors

    Creator:
    Scoggins, Luke A.
    Abstract:
    A generalized, three-dimensional, finite element bridge model was created in order to efficiently and accurately assess live-load girder distribution factors for a variety of bridge types. This model shortens the time required by bridge analysts to develop individual finite element models for bridges of varying geometries. The creation of the...
    Resource Type:
    Masters Thesis
    Full Text:
    22, 2007. Title: 3-D Finite Element Modeling in OpenSees for Bridge Live-Load Girder Distribution

  • Evaluation of cold in-place recycling of asphalt conrete pavements in Oregon

    Creator:
    Scholz, Todd
    Abstract:
    Significant use of cold in-place recycling (CIR) has occurred in Oregon since 1984 as an alternative to other rehabilitation techniques or to the reconstruction of distressed asphalt concrete (AC) pavements. Due to the initial success of the projects cold recycled during 1984-85, the Oregon Department of Transportation (ODOT) and Oregon...
    Resource Type:
    Masters Thesis
    Full Text:
    cD CA c+ co7:1 t.t) C (r) rn7C" 4./D Fa tig ue L if e, r ep et iti on s N 4: , O N 00 0 0

  • 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:
    committee, Dr. J. R. Bell, Dr. W. L. Schroeder, Dr. R. D. Layton, Prof. H. Pritchett and Dr. H. Crew