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Showing 35381 - 35400 of 36747 results
  • Vibratory compaction of bituminous concrete where does it stand
    Vibratory compaction of bituminous concrete -- where does it stand?.
    Hughes, Charles S
    1974-01-01 | PDF
    A questionnaire concerning the specifications on the use of vibratory rollers on bituminous concrete was sent to the 50 state highway agencies. All 50 agencies replied, and many indicated that their specs were in a state of change. The report presents the survey results. Field experience is discussed under five headings: (1) dual-drum density vs. s ...
  • Esthetic enhancement of concrete structures using ferrocement panels
    Esthetic enhancement of concrete structures using ferro-cement panels.
    Zuk, William
    1974-01-01 | PDF
    An investigation of ferro-cement indicates that when used in colored panels, such panels can be used to enhance the appearance of concrete structures. The panels are simply made, light in weight, and easily attached to either old or new structures. When the panels are used as accent colors, relatively few are required, and the cost is thereby minim ...
  • Procedures Manual for Roadside Hazard Inventory and Safety Improvement Alternatives
    Procedures Manual for Roadside Hazard Inventory and Safety Improvement Alternatives
    Weaver, Graeme D. ;
    Post, Edward R.
    1974-01-01 | PDF
    The cost-effectiveness analysis procedure for roadside safety improvement evaluation has been developed on an immediate implementation basis. This report documents the procedures to be applied in conducting the physical roadside hazard inventory and recommending safety improvement alternatives on Texas freeways. Immediate implementation of the mate ...
  • Evaluation of pavement design in Virginia based on layered deflections subgrade and its moisture content
    Evaluation of pavement design in Virginia based on layered deflections, subgrade and its moisture content.
    Vaswani, N. K
    1974-01-01 | PDF
    Studies were conducted to relate the deflection of flexible pavements to such environmental factors as temperature and moisture content of the pavements and their subgrade soils. Also considered were the thickness and the relative positions of the different components making up the pavement systems. Seven pavement designs were studied with respect ...
  • Pavement marking extensions for deceleration lanes
    Pavement marking extensions for deceleration lanes.
    Shelor, John D
    1974-01-01 | PDF
    Pavement markings have definite and important functions in a proper scheme of traffic control. One such marking, the pavement edge line, has received much favorable public reaction. One of the limitations of the edge line as conventionally applied is that it is broken at all intersecting roads and streets, which leaves the motorist without marking ...
  • A critical review of Community effects of highways reflected by property values
    A critical review of "Community effects of highways reflected by property values".
    Allen, Gary R
    1974-01-01 | PDF
    The report reviewed was prepared by Hays Gamble, C. John Langley, Jr., Owen Sauerlender, and other researchers from Pennsylvania State University, who attempted to determine the extent to which certain effects of limited access highways altered the value of residential real estate. The review was intended to provide the highway administrator with a ...
  • Survey on the use of studded tires and their contribution to pavement wear
    Survey on the use of studded tires and their contribution to pavement wear.
    Payne, Charles W
    1974-01-01 | PDF
    No Description
  • Evaluation of high intensity sheeting for overhead highway signs
    Evaluation of high intensity sheeting for overhead highway signs.
    Robertson, R. N.
    1974 | PDF
    The current practice in Virginia is to reflectorize and illuminate all overhead highway signs because of their important role in the safe and orderly flow of traffic. Reflectorization is obtained by using reflective sheeting as background and legend materials, and diffuse illumination is provided on the sign surface by lighting fixtures. The perfor ...
  • A methodology for determining rural public transportation needs in Virginia
    A methodology for determining rural public transportation needs in Virginia.
    Robertson, R. N
    1974-01-01 | PDF
    The need for rural public transportation is coming into focus, although-Its magnitude is unknown because of limited data. This study was initiated to develop an efficient and economical methodology for determining the transportation needs of the rural population. A case study was conducted in one rural county so that any potential problems could be ...
  • Subgrade moisture temperature variations under road pavements in Virginia
    Subgrade moisture & temperature variations under road pavements in Virginia.
    Vaswani, N. K
    1974-01-01 | PDF
    In this investigation the changes in the subgrade moisture content under five road pavements ranging in age from new to about ten years old were determined and evaluated. The moisture content was determined by means of a nuclear moisture depth probe. This investigation has shown that: (1) the higher compaction and dry density of the subgrade soil, ...
  • Study of a trussed girder composed of a reinforced plastic
    Study of a trussed girder composed of a reinforced plastic.
    McCormick, Fred C
    1974-01-01 | PDF
    The structural behavior of a series of laboratory test specimens was investigated to determine the ultimate strength, the deformation characteristics, and the mode of failure of a trussed girder composed of glass fiber reinforced polyester resin. Computations based on classical theories of elasticity were made for comparison with experimental resul ...
  • Review of a statistical specification for pugmill mixed material
    Review of a statistical specification for pugmill mixed material.
    Runkle, Stephen N
    1974-01-01 | PDF
    Since the spring of 1964, the Virginia Highway Research Council has been developing and implementing statistical specifications for highway operations. One of these specifications is used for the acceptance of pugmill mixed materials. The purpose of this study was to review the data obtained under the present statistical specification for pugmill m ...
  • Tensile and Elastic Characteristics of Pavement Materials
    Tensile and Elastic Characteristics of Pavement Materials
    Marshall, Bryant P. ;
    Kennedy, Thomas W.
    1974-01-01 | PDF
    This report describes the results of an investigation of the tensile and elastic properties of highway pavement materials. Cores of four types of materials obtained from recently constructed highway pavements were obtained and tested. Experimental estimates of the tensile and elastic properties (tensile strength, modulus of elasticity, and Poissont ...
  • An investigation of the effectiveness of existing bridge design methodology in providing adequate structural resistance to seismic disturbances Phase III analytical investigations of seismic response of short single or multiplespan highway bridges
    An investigation of the effectiveness of existing bridge design methodology in providing adequate structural resistance to seismic disturbances. Phase III : analytical investigations of seismic response of short; single; or multiple-span highway bridges
    Chen, M. ;
    Penzien
    1974-01-01 | PDF
    No Description
  • The Virginia highway construction and maintenance fund a survey of revenue sources 19731974
    The Virginia highway construction and maintenance fund : a survey of revenue sources, [1973-1974].
    Raab, Linda ;
    Daniel, Thomas
    1974-01-01 | PDF
    No Description
  • Industrialized timber structures
    Industrialized timber structures.
    Brown, H. E
    1974-01-01 | PDF
    It was recently learned that a number of innovations in structural timber components are available to the construction industry, but that they were largely unknown to bridge designers. The purpose of this study was to develop for the Department a feasibility document that presented the latest technology in industrialized structural timber component ...
  • Evaluation of remedial treatments at skid accident locations
    Evaluation of remedial treatments at skid accident locations.
    Payne, Charles W
    1974-01-01 | PDF
    The Virginia Department of Highways has for many years been concerned with the slipperiness of highway pavements, and has undertaken remedial action at numerous high wet accident locations. The purpose of this study was to evaluate the remedial action taken at 18 locations to determine if the percentages of wet accidents were significantly reduced. ...
  • Methods for increasing the harshness of texture on old concrete pavements canvass of what the states are doing
    Methods for increasing the harshness of texture on old concrete pavements : canvass of what the states are doing.
    Creech, Marion F
    1974-01-01 | PDF
    This report is a compilation of responses from different states setting forth what they are doing to restore the texture and thereby improve the skid resistance of old portland cement concrete pavements. All of the methods reported in use seem to work satisfactorily in certain cases and none seem satisfactory in all cases. Therefore it is necessary ...
  • Development of a base mix design procedure
    Development of a base mix design procedure.
    Freeman, J. R
    1974-01-01 | PDF
    This paper reports an investigation into the development of a compaction procedure for base mixes containing aggregates of 1 1/2" (38 mm) maximum size. The specimens were made in a manner similar to that given in ASTM Designation 1561-71, except that a 6" diameter mold was used instead of a 4" mold. The compaction procedure was developed using a mi ...
  • The state highway construction and maintenance fund a survey of revenue sources
    The state highway construction and maintenance fund : a survey of revenue sources.
    Daniel, Thomas ;
    Raab, Linda
    1974-01-01 | PDF
    There are two basic parts to the report. First, the state sources of revenue for the Highway Fund for the fiscal year 1972-73 are identified to depict the current method of highway funding. (A study of revenues generated on the federal level is not included, since any change in the makeup or structure of the Fund would most probably be effected wit ...
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