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  • Seismic performance and collapse assessments of reinforced concrete lateral- force resisting systems

    Creator:
    Buniya, Mustafa Kamil
    Abstract:
    Nonlinear response history analysis (NRHA) is increasingly becoming more accessible and prevalent in research and practice. As the accuracy of the NRHA results depends on the ground motion characteristics and the robustness of the numerical model, research has focused on the development of guidance for performance-based seismic design and assessment...
    Resource Type:
    Dissertation
    Full Text:
    analysis. In the first part, the seismic performance of the reinforced concrete special moment frame

  • Nutrients in runoff from spray irrigation of swine wastes

    Creator:
    Taylor, Dennis William
    Abstract:
    Major emphasis of this research study involved the evaluation of nutrient transport by overland flow. Samples gathered at various distances relative to a swine-waste spray irrigation system were used for the nutrient evaluation. As a result of this study, the following conclusions are made: 1. It is improbable that the...
    Resource Type:
    Masters Thesis
    Full Text:
    . Agricultural Experiment Station. Swine day, special report 245. Sponsored by the Dept. of Animal Science

  • 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:
    the best results for drainage basins larger than 150 square miles, while a logarithmic equation gave

  • Evaluation of polymer modified asphalt in hot mix pavements

    Creator:
    Ifft, Charles
    Abstract:
    Polymer modified asphalts have recently been the focus of much attention in the U.S. due to claims that polymer additives will lengthen the life of an asphalt pavement. Much of the published research on this topic has been concentrated on the effects of polymer modifiers on binder and mixture properties....
    Resource Type:
    Masters Thesis
    Full Text:
    tests. These con ventional binder tests do not fully address the special character istics of polymer

  • Evaluation of finite element techniques for soil reinforcement applications

    Creator:
    Berg, Ryan Robert
    Abstract:
    A literature review and a computer study are conducted to identify the requirements of finite element programs for the specific use of discrete analyses of reinforced soil structures. The utility of six commercially available programs are appraised with respect to the identified requirements. The results of the study are directed...
    Resource Type:
    Masters Thesis
    Full Text:
    structures and choose to utilize an available program for the analyses, instead of writing a special finite

  • Development of performance based test procedures for asphalt mixtures

    Creator:
    Kliewer, Julie E.
    Abstract:
    In 1987, Congress authorized a 5 year $150 million dollar research program called the Strategic Highway Research Program (SHRP). SHRP was divided into four major areas, including the asphalt research program. The asphalt research program was divided into six major research contracts, one such contract, SHRP-003A was called Performance Related...
    Resource Type:
    Dissertation
    Full Text:
    contained in Transportation Research Board's (TRB) Special Report 202, America's Highways: Accelerating

  • 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:
    was generated at a reference temperature of 150 o C that can be used for residual strength estimates

  • Lateral Load Path Analysis : Practical Methods for Light-Frame Modular Structures

    Creator:
    Huynh, Thanh Q.
    Abstract:
    The objectives of this study are to use SAP2000 to investigate lateral load paths and system behavior in a modular, light-frame wood structure by investigating different foundation configurations and to further develop and validate existing modeling techniques of shear wall elements based on the Perforated Shear Wall Method. The modeling...
    Resource Type:
    Masters Thesis
    Full Text:
    within limits similar to those provided by the Special Design Provisions for Wind and Seismic Design

  • Cyclic performance of connections used in hybrid cross-laminated timber

    Creator:
    Mahdavifar, Vahid
    Abstract:
    One of the recent additions to the panoply of engineered wood products is cross-laminated timber (CLT). CLT is a prefabricated, large-scale, solid wood panel that consists of multiple layers of lumbers stacked together, with each layer arranged perpendicular to the next layer, glued with structural grade adhesives, and pressed. The...
    Resource Type:
    Dissertation
    Full Text:
    expected that as the CLT market will continue to mature, more diversified grades and special CLT products

  • Ambient current effects on vertical selective flow withdrawal in a two layer reservoir system

    Creator:
    Charbeneau, Randall Jay
    Abstract:
    Withdrawal from a two-layer flow field is examined in terms of the degree of selectivity of the withdrawal flow and its dependence on an ambient current. Selectivity is defined as the bias of withdrawing one layer more strongly than the other; the extreme' case is complete selective withdrawal, where one...
    Resource Type:
    Masters Thesis
    Full Text:
    -linear function of the separating height. Of special interest is the observation that the degree of