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Filtering by: Creator United States. Dept. of the Interior Remove constraint Creator: United States. Dept. of the Interior Decade 1970-1979 Remove constraint Decade: 1970-1979 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Disposal of sandy pipeline dredge spoils by end dumping

    Creator:
    Pyles, Marvin Russell
    Abstract:
    Channel maintenance operations in the rivers and harbors of the United States annually require the disposal of over 320 million cubic meters of dredge spoils. As the availability of suitable land sites diminishes, open water disposal presents an attractive yet controversial alternative method. For open water disposal to be acceptable,...
    Resource Type:
    Masters Thesis
    Full Text:
    United States annually require the disposal of over 320 million cubic meters of dredge spoils. As the

  • The wastewater treatment characteristics of a rotating flighted cylinder

    Creator:
    Hansen, Larry Bruce
    Abstract:
    The rotating flighted cylinder (RFC) was investigated as a potential wastewater treatment deVice. A RFC is a rigid tube with a helically-wound fin attached to the interior surface and operates by flowing wastewater through the tube as it rotates. An 8-inch and 24-inch diameter RFC was tested for solids-liquid separation,...
    Resource Type:
    Masters Thesis
    Full Text:
    similar plants in the United States (21). In a study of package treatment plant 2All costs have been

  • In situ measurement of the benthal oxygen requirements of tidal flat deposits

    Creator:
    Crook, Gene Ray
    Abstract:
    In situ light and dark planktonic and benthal respirometers were used to measure the oxygen requirements of Yaquina estuary water and benthal deposits. Respirometer devices were constructed so that actual conditions of mixing could be simulated and benthal deposit disturbance would be minimized. A mathematical model of a benthal respirometer...
    Resource Type:
    Masters Thesis
    Full Text:
    in advance of any testing so that the muds could return to a more undisturbed state. Furthermore

  • BOD and toxicity of log leachates

    Creator:
    Atkinson, Sheridan William
    Abstract:
    A series of log storage experiments were conducted to determine whether leachates derived from water storage of logs are acutely toxic to fish. Log segments approximately 18 inches long and 16 inches in diameter were stored in tanks and held submerged for a period of 7 days. The holding water...
    Resource Type:
    Masters Thesis
    Full Text:
    Atkinson A THESIS submitted to Oregon State University in partial fulfillment of the requirements for

  • An investigation of the feasibility of a cutbank slope design method based on the analysis of natural slopes

    Creator:
    Keener, Quentin Roosevelt
    Abstract:
    The failure of cutbanks is a major problem encountered by those who construct low-cost roads in naturally forested residual soils. Attempts have been made to lessen the severity of failures by classifying certain soil areas as to their susceptibility to failure, in addition to bringing past design experience into play...
    Resource Type:
    Masters Thesis
    Full Text:
    Geology In cooperation with personnel of the United States Forest Service, United States Department of

  • Influence of expansive soils on structures in the Eugene area

    Creator:
    Bonell, John Alexander
    Abstract:
    Expansive soils in Eugene, Oregon present a problem to residents, consultants, contractors, and the city government. During the years 1977 to 1979, the nature and extent of the problem was identified, including an outline of the local occurrence of expansive soils and possible engineering solutions to the most often encountered...
    Resource Type:
    Masters Thesis
    Full Text:
    regional map of the United States, developed for identifying expansive soil areas. Table 4 gives the

  • Effects of pressure and deposit thickness on the stabilization rate of benthic marine sludge deposits

    Creator:
    Muellenhoff, W. P.
    Abstract:
    The biochemical degradation of domestic sludge deposits exposed to benthic marine conditions was investigated using a laboratory Deep Sea Simulator. The rate and extent of deposit stabilization were determined for select hydrostatic pressures and hydrogen acceptor conditions by monitoring depletion of particulate organic carbon in 2.0 and 3.0 centimeter deposits....
    Resource Type:
    Dissertation
    Full Text:
    Muellenhoff A THESIS submitted to Oregon State University in partial fulfillment of the requirements for

  • 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:
    several types of roads and highways. In the United States, they have most often been used over low

  • The static and dynamic analysis of discretely represented moorings and cables by numerical means

    Creator:
    Dominguez, Richard Frank
    Abstract:
    Computer oriented techniques and procedures are presented for the analysis of single and multiple cable systems. Application is made to a two-point mooring system influenced by surface and subsurface hydrodynamic loading. The effects of the various parameters are presented and the numerical method is compared to exact solutions obtained from...
    Resource Type:
    Dissertation
    Full Text:
    through a Regents College Teach- ing Fellowship by the State of New York and the National Science

  • Structural analysis of symmetrical penstock bifurcations by the finite element method

    Creator:
    Shugar, T. A.
    Abstract:
    A need has existed for an in-depth structural analysis of penstock bifurcations because they form an integral part of hydroelectric power plants. Their geometrical complexity has prevented classical structural analysis from providing an accurate and overall picture of the stresses in the structure. Digital computers and the development of finite...
    Resource Type:
    Dissertation
    Full Text:
    authorized in whole, or in part, for any purpose of the United States Government. The author wishes to