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Showing 27261 - 27280 of 35628 results
  • Concrete bridge decks with isotropic reinforcing short term evaluation
    Concrete bridge decks with isotropic reinforcing : short term evaluation.
    Brooks, Eric W.
    1998-09-01 | PDF
    The Oregon Department of Transportation (ODOT) has used traditional truss bar layout for bridge deck reinforcement for many years. Studies by other states found the same performance using an isotropic deck grid steel reinforcement layout. The isotropic system uses less steel, which lowers the cost of the deck and reduces distress caused by rebar co ...
  • Establishment of QCQA procedures for opengraded mixes final report
    Establishment of QC/QA procedures for open-graded mixes : final report.
    Dunn, K. D. ;
    Gray, J. A.
    1998-09-01 | PDF
    The State of Oregon has employed the use of porous concrete surfaces (E- and F-mixes) since the 1970s. The use of porous mixes has increased substantially in the past five years. Previously, no work had been done to evaluate whether the quality control/quality assurance (QC/QA) procedures used for dense-graded mixes were appropriate for open-graded ...
  • Experimental Pavement Reconstruction Project to Determine LongTerm Effectiveness of Lime and Cement for Stabilization of Pavement Subgrade Soils
    Experimental Pavement Reconstruction Project to Determine Long-Term Effectiveness of Lime and Cement for Stabilization of Pavement Subgrade Soils
    Jayawickrama, Priyantha W. ;
    Wray, Warren K.
    1998-09-01 | PDF
    A field and laboratory study was begun in 1995 to evaluate the engineering behavior of a stabilized soil from two test sections beneath a reconstructed roadway. This roadway is designated FM 1343 and is located in Medina County, south of SH 90, approximately 20 miles west of San Antonio, Texas. One test section was stabilized using Portland cement, ...
  • Ten year performance of asphalt additive test sections Lave Butte Fremont Highway Junction Section The Dalles California Highway US97 Deschutes County Oregon
    Ten year performance of asphalt additive test sections : Lave Butte - Fremont Highway Junction Section, The Dalles - California Highway (US#97), Deschutes County, Oregon.
    Edgar, Rob
    1998-09-01 | PDF
    The durability of hot mix asphalt concrete (HMAC) overlays is important to the Oregon Department of Transportation (ODOT), as this is the most common form of surface rehabilitation on state roads. To see if several HMAC additives available in Oregon increased overlay life, test sections were paved in 1985.The eight test and two control sections are ...
  • Evaluation of Louisianas statistically based quality control and acceptance specifications for asphaltic concrete final report
    Evaluation of Louisiana's statistically based quality control and acceptance specifications for asphaltic concrete : final report.
    Metcalf, J. B. ;
    Ray, Thomas G.
    1998-09-01 | PDF
    In 1971, the Louisiana Department of Transportation and Development initiated a statistically based specification system for asphaltic concrete using historically generated data. A Materials Test Data (MATT) reporting system was also started to archive all materials and construction data. This data was used to validate the specifications in 1975 an ...
  • Research notes alternate method for pothole patching
    Research notes : alternate method for pothole patching.
    Oregon. Dept. of Transportation. Research Unit
    1998-09-01 | PDF
    Typically, throw and roll pothole patches will likely fail before the pavement is resurfaced or rehabilitated. Alternatively, semi-permanent repairs are time consuming and require more people and added lane closure time. An alternate method is spray injection. Spray injection is a process where using specialized equipment, aggregate is simultaneoul ...
  • Commercialization of space transportation exploring the impact of the National Space Transportation Policy
    Commercialization of space transportation : exploring the impact of the National Space Transportation Policy
    Johnson, T. L.
    1998-09-01 | PDF
    The 1994 National Space Transportation Policy designates the roles of the DoD, NASA and the Departments of Transportaiton and Commerce to "identify and promote innovative types of arrangements between the US government and the private sector in order to reduce the cost to access space." DoD, civil and commercial industry leaders agree that the pric ...
  • Measuring injury outcomes proceedings of a National Conference
    Measuring injury outcomes : proceedings of a National Conference
    Luchter, Stephen
    1998-09-01 | PDF
    On June 15 and 16, 1998, NHTSA sponsored a conference to discuss the current state of knowledge of injury outcomes, with an emphasis on motor vehicle crash injuries. The purposes of the conference were to share the current state of knowledge in measuring injury outcomes with the agency's partners in industry, government and academe, and to provide ...
  • Impact of Various Compaction Equipment on HotMix Asphalt HMA Design in Ohio
    Impact of Various Compaction Equipment on Hot-Mix Asphalt (HMA) Design in Ohio.
    Abdulshafi, O. ;
    Kedzierski, B.
    1998-09-01 | PDF
    The study was initiated to examine the effect of different laboratory compaction devices on density, air voids, and optimum asphalt binder content for mixes designed for heavy volume traffic that are currently used in Ohio. A total of six and twelve aspha;Sponsored by Federal Highway Administration, Columbus, OH. Ohio Div. and Ohio Dept. of Transpo ...
  • Design of rock socketed drilled shafts
    Design of rock socketed drilled shafts
    Gunnink, B. ;
    Kiehne, C.
    1998-09-01 | PDF
    Three field load tests of drilled shafts socketed in Burlington limestone were conducted using the Osterberg load cell. The objective of these tests was to compare the shaft capacities obtained from the field load tests with capacities predicted using analytical methods and with typical presumptive design capacities.
  • Kansas Department of Transportation Wetland Mitigation Sites Analysis and Opportunity for Improving Success
    Kansas Department of Transportation Wetland Mitigation Sites: Analysis and Opportunity for Improving Success
    Kindscher, K. ;
    Mehaffey, M.
    1998-09-01 | PDF
    The objective of the study was to examine wetland status, success rate, and the potential for continued development as wetlands of six Kansas Department of Transportation wetland mitigations. The wetlands were constructed to compensate for impacts caused.
  • High Performance Concrete for Transportation Structures
    High Performance Concrete for Transportation Structures
    Bush, Thomas D. ;
    Russell, Bruce W.
    1998-09-01 | PDF
    Use of high-performance concrete has tremendous potential for improving economy and long-term durability of structures. The State of Oklahoma has an abundance of high-quality aggregates that are necessary for the production of high strength/high performance.
  • Fixed reproducible tangible wealth in the United States revised estimates for 199597 and summary estimates for 192597
    Fixed reproducible tangible wealth in the United States : revised estimates for 1995–97 and summary estimates for 1925–97
    United States. Department of Commerce
    1998-09-01 | PDF
    The tables that follow present new estimates of fixed reproducible tangible wealth in the United States for 1997 and revised estimates for 1995–96. These estimates, which cover net stocks of privately owned and government owned durable equipment and structures and net stocks of durable goods owned by consumers, incorporate the revised national inco ...
  • Missouri Department of Transportation SHRP LTPP Test Sections
    Missouri Department of Transportation SHRP LTPP Test Sections.
    Missouri. Department of Transportation
    1998-09-01 | PDF
    No Description
  • Development of Improved Guidelines for Frontage Road Driveway Access Location
    Development of Improved Guidelines for Frontage Road Driveway Access Location
    Jacobson, Mark S ;
    Nowlin, L.
    1998-09-01 | PDF
    Access on the frontage road in close proximity to exit ramp terminals can amplify the amount and severity of weaving and lead to operational and safety problems on the frontage road. This report summarizes research activities directed at evaluating the operation of frontage roads with unsignalized marginal access located at varying distances from e ...
  • Port risk management and insurance guidebook
    Port risk management and insurance guidebook
    United States. Department of Transportation. Maritime Administration
    1998-09-01 | PDF
    The overall objective of the guidebook is to provide ports with the basic skills and information needed to establish and maintain appropriate and cost-effective insurance and risk management programs. it is designed to serve as a practical "how-to" manual and educational reference text. While it is written from a port's point of view and geared tow ...
  • Meeting the Customers Needs for Mobility and Safety During Construction and Maintenance Operations
    Meeting the Customer's Needs for Mobility and Safety During Construction and Maintenance Operations
    United States. Federal Highway Administration
    1998-09-01 | PDF
    A two-step process was used by the Review Team in conducting this review: (1) completion of a Baseline Assessment Data Form by all FHWA field offices, and (2) a scan of selected States. The Executive Director's November 26, 1997, memorandum transmitted Baseline Assessment Data Forms to all FHWA field offices. The purpose of these Baseline Assessmen ...
  • Rural Public Transportation Technologies User Needs and Applications Tech Brief
    Rural Public Transportation Technologies: User Needs and Applications. Tech Brief.
    United States. Federal Highway Administration
    1998-09-01 | PDF
    Rural Intelligent Transportation Systems (ITS) have the ability to meet the needs of travelers in and through rural areas as well as the needs of agencies responsible for the operation and maintenance of rural transportation systems. To assist in these endeavors, the U.S. Department of Transportation (DOT) developed the Rural ITS Program. This prog ...
  • MULIBuslorry Passenger and Goods Transport in a Multiple Buslorry
    MULI-Buslorry: Passenger and Goods Transport in a Multiple Buslorry
    Sweden. Transport and Communications Research Board  ...
    1998-09-01 | PDF
    In the MULI-project a new type of medium-sized vehicle suitable for both passenger and goods transportation has been developed in cooperation with a qualified vehicle supplier. The vehicle, the MULI-Buslorry (a vehicle for MULtIple use), has a low floor. Summary also in Swedish.
  • School Bus Acceleration Characteristics
    School Bus Acceleration Characteristics
    Gattis, J. L. ;
    Nelson, S. H.
    1998-09-01 | PDF
    Research was conducted to collect speed, time, and distance data for Type C and Type D ("full size") school buses accelerating from a stopped position. Most of the tests were conducted on level terrain. By combining the knowledge of how quickly a school bus can accelerate with assumed speeds of oncoming through-street vehicles, the needed intersect ...
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