Search Constraints

Start Over
Filtering by: Siletz River Estuary, Oregon, United States Remove constraint Siletz River Estuary, Oregon, United States Decade 2000-2009 Remove constraint Decade: 2000-2009 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

Search Results

  • Tidal influence on downstream fining in gravel-bed rivers

    Creator:
    Coles, Derron Rafiq
    Abstract:
    This research examines the downstream fining phenomenon as it operates in coastal gravel-bed rivers of Oregon. Downstream fining is a change in bed composition toward smaller sediment sizes in the downstream direction. Changes in stream flow discharge and channel slope affect the rate of bed-load transport, thereby altering the downstream...
    Resource Type:
    Dissertation
    Full Text:
    kilometers) west of Portland, Oregon and 60 miles ( 96.6 kilometers) south of the Columbia River mouth at

  • The review of PPP toll roads in the US and the simulation of the Chicago Skyway

    Creator:
    Xu, Wei
    Abstract:
    As the traffic demand increases at a faster rate than the upgrade and maintenance of transportation facilities through the traditional public financing methods in the United States, the Public-Private Partnership (PPP) is becoming an important supplement to the public transportation infrastructure investment. There are already several existing PPP toll road...
    Resource Type:
    Masters Thesis
    Full Text:
    IRR, the more private profit they must share with the public. In the United States, the Texas State

  • Reducing sediment production from forest roads during wet-weather use

    Creator:
    Toman, Elizabeth Myers
    Abstract:
    Forest roads produce fine sediment with traffic during wet weather. If the forest road is connected to a stream it can be a source of turbidity and fine sediment that may be detrimental to aquatic organisms especially salmonids. The goal of this work was to investigate turbid runoff during wet-weather...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION submitted to Oregon State University in partial fulfillment of the

  • 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:
    Strength and Stiffness of Wood Shear Walls by Dana J. Lebeda A THESIS Submitted to Oregon State

  • Development of an improved system for Oregon to accurately quantify dense-graded hot mix asphalt pavement density

    Creator:
    Darra, Suraj
    Abstract:
    The Oregon Department of Transportation (ODOT) standard specifications require a minimum density for the construction of dense-graded hot mix asphalt (HMA) pavements. Currently, the standard specifications call for density measurements for quality control (QC) and quality assurance (QA) testing to be made using nuclear density gauges that are calibrated using...
    Resource Type:
    Masters Thesis
    Full Text:
    density tests to be performed on them vary from state to state in the United States. While some states

  • Consistency and effectiveness of advisory speeds: an evaluation of current posting techniques

    Creator:
    Rohani, Joshan W.
    Abstract:
    Crash rates are said to be nearly three times higher on curved sections than those on straight sections of rural roadways. As a result, advisory curve/speed signs are standard practice to mitigate these risks on sharp horizontal curves. The industry standard for determining appropriate and uniform speeds for such signs...
    Resource Type:
    Masters Thesis
    Full Text:
    -maintained and locally-maintained roadways. Since the United States and the state of Oregon have used ball

  • Design, analysis and evaluation of bridge superstructures for live loads

    Creator:
    Turan, O. Tugrul
    Abstract:
    Due to age, original design that is deficient by modern standards, inadequate maintenance, environmental conditions, and increasing loads, large numbers of bridges in United States and elsewhere are classified as deficient and in need of rehabilitation or replacement. According to a national bridge inventory established by the Federal Highway Administration,...
    Resource Type:
    Dissertation
    Full Text:
    , environmental conditions, and increasing loads, large numbers of bridges in United States and elsewhere are

  • The effects of land use on stream nitrate concentrations : from the catchment scale to the regional scale

    Creator:
    Poor, Cara J.
    Abstract:
    This work furthers the understanding of processes occurring in catchments that affect stream nitrate concentrations using two different approaches: a temporally intensive case study of three headwater catchments with varying land use (through storm event monitoring) and a spatially intensive study on the regional scale (through statistical modeling) of 1st-4th...
    Resource Type:
    Dissertation
    Full Text:
    Oregon State University in partial fulfillment of the requirements for the degree of Doctor of

  • Effect of constituent materials and curing methods on the abrasion resistance and durability of high performance concrete for pre-cast pre-stressed bridge deck slabs

    Creator:
    Keshari, Shweta
    Abstract:
    This thesis is the consequence of a research effort undertaken by the School of Civil and Construction Engineering at Oregon State University and funded by the Oregon Department of Transportation (ODOT) and the Federal Highway Administration (FHWA). The principal objective of the effort was to reduce the life cycle cost...
    Resource Type:
    Masters Thesis
    Full Text:
    Civil and Construction Engineering at Oregon State University and funded by the Oregon Department of

  • Common Factors that Affect Aesthetics in Bridge Design

    Creator:
    Coe, Jennifer J.
    Abstract:
    Aesthetics should be emphasized as much as possible in a design project without exceeding scope, budget, or schedule to satisfy the stakeholders involved. There is a rising trend of increased emphasis on aesthetics. This trend of using various techniques to help structures blend in or contribute to the surrounding environment...
    Resource Type:
    Honors College Thesis
    Full Text:
    , Oregon: Oregon State University Press. Historic Bridges of the United States, (February 2008a