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  • Plans and Specifications for a Sewerage System for all of Corvallis Lying West of Ninth Street

    Creator:
    Gardner, Wilford W.
    Abstract:
    At the present time only a portion of Corvallis is sewered and a portion of the city still employs the most crude and unhealthful methods of disposal. The district east of Ninth Street, as shown on the map, has an effective system of well constructed sewers, of the combined storm-water...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    cost is no greater than a brick sewer. The thickness of the sewer was taken at six inches. This is

  • Finite elements analysis of circular cell bulkheads

    Creator:
    Kittisatra, Likhit
    Abstract:
    A mathematical model is developed for the analysis of circular cell bulkheads subjected to gravity loads of cell fill, backfill, lateral pressure, and surcharge load using the finite element method. The finite element circular cell model consists of axisymmetric triangular and/or quadrilateral ring elements for soil and cylindrical shell elements...
    Resource Type:
    Dissertation
    Full Text:
    elastic, isotropic and non-homogeneous materials. It is assumed that there is no slippage in the soil

  • Properties of geotextiles in cold regions applications

    Creator:
    Allen, Tony Michael
    Abstract:
    Geotextiles are experiencing increased use in arctic and subarctic construction in separation, reinforcement, erosion control, and drainage applications. The use of geotextiles as capillary cutoff layers to prevent frost heave has been proposed as well. In recognition of the need to investigate properties of geotextiles in cold regions applications, a...
    Resource Type:
    Masters Thesis
    Full Text:
    freeze-thaw cycles showed no serious degradation. Geotextile load-deformation-time relationships were

  • 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:
    Master of Science in Civil Engineering presented on June 15, 2005 Title: Assessing the Effectiveness

  • Flexural anchorage performance and strengthening on negative moment regions using near-surface mounted retrofitting in reinforced concrete bridge girders

    Creator:
    Barker, Laura
    Abstract:
    Large numbers of reinforced concrete deck girder (RCDG) bridges were built during the highway infrastructure boom of the 1950's. The advent of standardized deformed steel reinforcing bars during this time allowed for straight bar terminations in flexural tension regions. Designers of the time terminated reinforcing bars where they were no...
    Resource Type:
    Masters Thesis
    Full Text:
    degree of Master of Science in Civil Engineering presented on August 15, 2014. Title: Flexural

  • Evaluating Industrialization Rate in Construction: A Quantification Model

    Creator:
    Liu, Ding
    Abstract:
    The concept of construction industrialization, first raised in the 1960s, refers to the transfer of on-site construction work to an off-site factory to improve quality and reduce cost, time, and safety issues. In some countries, industrialization of construction projects is highly recommended and promoted by governments and local construction institutions...
    Resource Type:
    Dissertation
    Full Text:
    Liu for the degree of Doctor of Philosophy in Civil Engineering presented on May 15, 2019. Title

  • Aerobic cometabolism of trichloroethylene and cis-dichloroethylene in propane-fed microcosms from the McClellan Air Force Base

    Creator:
    Timmins, Brian
    Abstract:
    This thesis focused on using microcosms to better understand the aerobic cometabolic processes of TCE and cis-DCE transformation that occurred during a Cometabolic Air Sparging (CAS) demonstration at McClellan Air Force Base. The microcosms were created with groundwater and aquifer materials from the demonstration site. Concentrations of compounds in the...
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Civil Engineering presented on August 15, 2001. Title: Aerobic Cometabolism of

  • Assessment and Service Life Prediction of Microbial Induced Corrosion of Concrete (MICC)

    Creator:
    Sahan, Feyza N.
    Abstract:
    Microbial-induced corrosion of concrete (MICC) is a multi-stage deterioration process caused by microbial activity in wastewater infrastructure. MICC is a worldwide issue due to the reduced service life of the wastewater infrastructure and the economic impact associated with increased maintenance and reconstruction costs. This thesis explores two critical aspect of...
    Resource Type:
    Masters Thesis
    Full Text:
    ] found that no mass loss of specimens containing a range of 6-15% silica fume replacement of OPC in

  • 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:
    Philosophy in Civil Engineering presented on May 15, 2013. Title: Experimental Study of Counter

  • Networked Multi-agent Modeling of Connected Vehicles in Mixed Traffic Environment: A Decentralized Consensus Approach

    Creator:
    Wahid, Merih
    Abstract:
    Transportation systems are facing safety and operational challenges with a cost of billions of dollars annually in lost production time and wasted fuel. Infrastructure expansion, previously held as a panacea to most transportation challenges has lost its appeal due to financial, land-use and environmental constraints. Interest is surging in intelligent...
    Resource Type:
    Dissertation
    Full Text:
    degree of Doctor of Philosophy in Civil Engineering presented on September 15, 2017. Title: Networked