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Showing 35021 - 35040 of 36747 results
  • An investigation of the effectiveness of existing bridge design methodology in providing adequate structural resistance to seismic disturbances Phase V Correlative investigations on theoretical and experimental dynamic behavior of a model bridge structure
    An investigation of the effectiveness of existing bridge design methodology in providing adequate structural resistance to seismic disturbances : Phase V; Correlative investigations on theoretical and experimental dynamic behavior of a model bridge structure
    Kawashima, Kazuhiko ;
    Penzien, Joseph
    1976-01-01 | PDF
    No Description
  • Air pollution and roadway location design and operation preliminary study of distribution of carbon monoxide on and adjacent to freeways interim report
    Air pollution and roadway location; design; and operation : preliminary study of distribution of carbon monoxide on and adjacent to freeways : interim report
    Ranzieri, Andrew J. ;
    Bemis, Gerald R.
    1976-01-01 | PDF
    No Description
  • Inhouse fabrication of precast concrete bridge slabs
    In-house fabrication of precast concrete bridge slabs.
    Sprinkel, Michael M
    1976-01-01 | PDF
    Information is reported on the labor, equipment, material, and cost required for seven bridge maintenance situations in which state forces widened or replaced an existing short span structure. Precast concrete slabs were installed at three of the locations, concrete slabs were cast at the site at two of the locations, and steel stringer-timber deck ...
  • An evaluation of the following too closely monitor system on a fourlane undivided highway interim report
    An evaluation of the following too closely monitor system on a four-lane undivided highway : interim report.
    Parker, Martin R
    1976-01-01 | PDF
    The FOLLOWING TOO CLOSELY (FTC) MONITOR system is an experimental device designed to measure vehicle gaps at a point along the highway and to advise the motorist, by means of a flashing message on a sign, that he is following the car in front of him too closely. On October 31, 1974, ten FTC monitors were installed at four sites on a 6-mile 4-lane u ...
  • Relocation due to highway takings a diachronic analysis of social and economic effects
    Relocation due to highway takings : a diachronic analysis of social and economic effects.
    Perfater, Michael A ;
    Allen, Gary R
    1976 | PDF
    In general, relocatees in Virginia voiced a favorable opinion of the relocation program and the personnel running it, as is borne out by the 32 findings and conclusions listed.
  • Longterm performance of concrete containing hydrated hydraulic lime as an admixture
    Long-term performance of concrete containing hydrated hydraulic lime as an admixture.
    Newlon, Howard
    1976 | PDF
    In 1941 two bridges were constructed with decks using concrete incorporating as an experimental feature the use of hydrated lime as an admixture in amounts varying from zero to 12%. After 35 years of service the decks were scheduled for repairs to correct surface spalling caused by corrosion of the reinforcing steel. Performance surveys were made i ...
  • Development of test procedure for the design of black base final report
    Development of test procedure for the design of black base : final report.
    Maupin, G. W
    1976 | PDF
    There is no standard design procedure available for black base mixes containing aggregates larger than 1" (25.4 mm) This investigation dealt with the use of stability testing equipment similar to that used in the design of surface mixes and development of a compaction procedure for 6" (152. 4 mm) diameter specimens. A compaction procedure was devel ...
  • Northtown Burlington Northerns Flagship Electronic Classification Yard
    Northtown— Burlington Northern's Flagship Electronic Classification Yard
    Ploeger, Dale
    1976-01-01 | PDF
    Brochure describing Burlington Northern's flagship electronic classification yard at Northtown Yard at Minneapolis, Minn.
  • CutandCover Tunneling Final Report Volume 2
    Cut-and-Cover Tunneling: Final Report Volume 2
    Wickham, George E. ;
    Tiedemann, Henry R.
    1976-01-01 | PDF
    This volume summarizes the findings of the entire study. It presents a method for comparing the costs of alternate construction schemes for cut-and-cover tunneling in urban areas. It considers both the cost of construction and the cost of urban disruption, enabling the planner to choose that construction most effective for his particular requiremen ...
  • Controlling erosion along highways with vegetation or other protective cover
    Controlling erosion along highways with vegetation or other protective cover.
    Wright, David L ;
    Perry, D. L.,
    1976 | PDF
    Construction operations in highway corridors disturb the natural vegetation and land contours causing potential erosion sites if left denuded. Minimizing erosion on these areas is based on the principles of maximizing water infiltration and reducing water runoff obtainable with rough and stair-step grading to establish vegetative cover quickly. Rou ...
  • Trends in drinkingdriving at night a comparison of the first five roadside surveys of the Fairfax Alcohol Safety Action Project final report
    Trends in drinking-driving at night : a comparison of the first five roadside surveys of the Fairfax Alcohol Safety Action Project : final report.
    Lynn, Cheryl
    1976 | PDF
    This report outlines the findings of the first five annual roadside surveys conducted in conjunction with the Fairfax Alcohol Safety Action Project (ASAP). The baseline survey was conducted in January of 1972 with the four subsequent surveys being conducted in October of each year. The primary purpose of the roadside surveys is to provide an indica ...
  • An evaluation of the effectiveness of S5 scratch courses
    An evaluation of the effectiveness of S-5 scratch courses.
    Hughes, Charles S
    1976-01-01 | PDF
    A study was made of the practice of "scratching" the surface course of several new construction projects in Virginia. It was found that sections with the surface course placed in one lift produced a road roughness value of about 3 in./mile higher than comparable sections which had the surface course split. Conversely, the single lift surface course ...
  • An economic history of five midwestern railroads
    An economic history of five midwestern railroads
    Kaitz, Gary M.
    1976-01-01 | PDF
    No Description
  • Drinkingdriving attitudes knowledge and behavior an analysis of the first two telephone surveys of the Fairfax Alcohol Safety Action Project
    Drinking-driving attitudes, knowledge and behavior : an analysis of the first two telephone surveys of the Fairfax Alcohol Safety Action Project.
    Lynn, Cheryl
    1976-01-01 | PDF
    The first two telephone surveys for the Fairfax ASAP were conducted during June and December of 1975. During each, 500 ASAP area residents randomly selected from the Northern Virginia phone book were called and were interviewed using a standard questionnaire. The sample was stratified by sex and partially age. Differences between survey results wer ...
  • Potential problems on I77 concrete culvert
    Potential problems on I-77 concrete culvert.
    Wyant, David C ;
    Reynolds, John W
    1976-01-01 | PDF
    Along a section of Interstate 77 in Carroll County, it was necessary to construct a fill approximately 256 ft deep. The flow of a mountain stream had to be carried through this massive embankment and, because of the nature of the terrain, it was decided to use a temporary steel culvert and a permanent concrete culvert. Deflection gage data were obt ...
  • CANDE a modern approach for the structural design and analysis of buried culverts final report
    CANDE : a modern approach for the structural design and analysis of buried culverts : final report
    Katona, M. G.
    1976-01-01 | PDF
    No Description
  • Evaluation of aerial remote sensing techniques for defining critical geologic features pertinent to tunnel location and design
    Evaluation of aerial remote sensing techniques for defining critical geologic features pertinent to tunnel location and design
    Russell, O.
    1976-01-01 | PDF
    No Description
  • Comparative Study of Procedures for the Analysis of Chloride in Hardened Concrete
    Comparative Study of Procedures for the Analysis of Chloride in Hardened Concrete
    Clemeña, Gerardo G. ;
    Reynolds, John W
    1976-01-01 | PDF
    In the widely used potentiometric titration procedure for the analysis of chloride in powdered hardened concrete samples, difficulties have often been encountered when determining the endpoint. These difficulties have been eliminated through the use of the Gran method of endpoint determination, which also simplifies the titrations and improves the ...
  • The effects of stream channelization on bottom dwelling organisms phase 2 report 1975 construction season
    The effects of stream channelization on bottom dwelling organisms : phase 2 report : 1975 construction season.
    Wyant, David C
    1976-01-01 | PDF
    Three construction projects affecting streams are being monitored. On two of the projects, those affecting Meadow Run and Moores Creek, the streams are being monitored for flow, suspended solids, rainfall, and benthic populations. Construction has been completed on these projects and the monitoring program is being curtailed. The third project, whi ...
  • An analysis of ultimate performance measures to determine total project impact of the Fairfax Alcohol Safety Action Project progress report 4
    An analysis of ultimate performance measures to determine total project impact of the Fairfax Alcohol Safety Action Project : progress report #4.
    Spencer, Jeffrey A
    1976-01-01 | PDF
    The Fairfax ASAP, one of 35 federally funded alcohol countermeasure projects designed to attack the problem of drunken drivers on the highways, was implemented at the community level in January 1972. This report summarizes the results of data obtained to measure the project's impact on the selected ultimate performance indicators at the end of the ...
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