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Filtering by: Alternative title ssim Bulletin series no. 43 Remove constraint Alternative title ssim: Bulletin series no. 43 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Seismic protection of flexible rotating machines using base isolators

    Creator:
    Su, Wen-Chyi
    Abstract:
    Base isolation is an alternative seismic design strategy in which the primary structures and their internal components are uncoupled from the potentially damaging horizontal components of an earthquake by base isolators which attenuate the transmission of horizontal acceleration into the system. Rotating machines are among the key internal components of...
    Resource Type:
    Dissertation
    Full Text:
    No. CMS-9301464 and the Department of Civil, Construction and Environmental Engineering at Oregon

  • Land surface energy balance and surface soil moisture variation in HAPEX-MOBILHY

    Creator:
    Nichols, William E.
    Abstract:
    The HAPEX-MOBILHY regional experiment provided an significant opportunity to analyze the partition of energy and distribution of water over land surfaces. The combination of remotely sensed data and ground instrument networks over the large-scale in situ experiment allowed investigation of spatial and temporal variation of such hydrologic parameters as the...
    Resource Type:
    Masters Thesis
    Full Text:
    Data 43 3.2 Remote Sensing Instrumentation 43 3.2.1 Thematic Mapper Simulator 45 3.2.2 Push Broom

  • Autogenous deformation and chemical shrinkage of high performance cementitious systems

    Creator:
    Fu, Tengfei
    Abstract:
    In the past ten years, renewed research interest has shown the benefits of internal curing by incorporating saturated lightweight fine aggregate (LWFA) in high performance concrete (HPC). As a result, the technology of internal curing has steadily progressed from laboratory studies to field applications. To determine the optimum LWFA content,...
    Resource Type:
    Masters Thesis

  • The effect of hold-down misplacement on the strength and stiffness of wood shear walls

    Creator:
    Lebeda, Dana J.
    Abstract:
    The objective of this study was to determine the effect of misplaced hold-downs on the static and cyclic behavior of wood shear walls. Three shear wall configurations were considered in this study. The first configuration (control) had hold-downs at the ends of the wall (wall type 1), the second configuration...
    Resource Type:
    Masters Thesis
    Full Text:
    89 mm (2 x 4 in. nominal) No. 2 kiln dried Douglas-fir studs spaced at 406 mm (16 in.) o.c

  • Experimental study of counter-propagating solitary wave collisions

    Creator:
    Chen, Yongshuai
    Abstract:
    To better understand the extreme local amplification of tsunami, the experimental investigation on counter-propagating solitary wave collisions over a horizontal bottom was conducted using the optical measurement techniques: Particle Image Velocimetry (PIV), and Laser Induced Fluoresce (LIF). Head-on collisions and oblique collisions of equal-amplitude as well as unequal-amplitude waves were...
    Resource Type:
    Dissertation
    Full Text:
    angles (up to 20°) due to the limitation of our basin breadth. We find no difference essentially with

  • Random wave forces on cylinders

    Creator:
    Hsu, Ming-kuang
    Abstract:
    The in-line force power spectrum is predicted by the frequency domain maximum force coefficient [C[subscript μn](z,f[subscript n])] vs. Keulegan-Carpenter number [K[subscript n] (z,f[subscript n])] relationship. The frequency domain Keulegan- Carpenter number is defined as the velocity from the amplitude spectrum at f divided by the respective frequency and diameter of...
    Resource Type:
    Dissertation
    Full Text:
    3.1.2 The SRC.02 Cylinder 39 3.1.3 The SP3-55D Cylinder 39 3.2 Field Experiments 43 3.2.1 NMI Second

  • Critical buckling load for round tapered columns with variable end fixity

    Creator:
    Dotson, George Franklin
    Abstract:
    The critical buckling load for round tapered columns with variable end fixity is presented. The theory used is presented together with the general solution for the resulting differential equation. This general solution is solved by use of a computer. The computer program written specifically for this thesis, the flow chart,...
    Resource Type:
    Masters Thesis
    Full Text:
    reveals that very little accurate design information is available. No information was found which the

  • Some aspects of the biological metabolism of a partially colloidal substrate

    Creator:
    Berg, Richard Harold
    Abstract:
    An investigation was conducted to ascertain if certain concepts of microbial metabolism, derived from studies using simple soluble substrates, are applicable to the biological assimilation of complex, partially colloidal suspensions. A mixture containing one gram of Carnation dry-skim milk is considered to be a complex, partially colloidal substrate and was...
    Resource Type:
    Dissertation
    Full Text:
    . Experimental evidence shows that at the plateau 43 percent of the ultimate BOD of the milk suspension has

  • Assessing the effectiveness and environmental impacts of using natural flocculants to manage turbidity

    Creator:
    Kegley, Laura J.
    Abstract:
    The objective of this research was to determine the feasibility of using chitosan as a natural flocculant to control turbidity during in-stream construction work. A series of field tests in Oak Creek, Corvallis, OR were conducted in order to test the effectiveness for turbidity control and the environmental impacts of...
    Resource Type:
    Masters Thesis
    Full Text:
    natural flocculant to control turbidity during in-stream construction work. A series of field tests in Oak

  • Ultimate bearing capacity of shallow footings on plastic silt

    Creator:
    Newton, Vernon C.
    Abstract:
    The usual approach to calculation of the ultimate bearing capacity of plastic silt is to assume no porewater drainage occurs during the loading period. The coefficient of permeability of plastic silt is generally significantly larger than clay; therefore, partial drainage of porewater may occur during the loading period. This study...
    Resource Type:
    Masters Thesis
    Full Text:
    is to assume no porewater drainage occurs during the loading period. The coefficient of permeability