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Showing 36601 - 36620 of 36747 results
  • Highway Construction Materials From the Consolidated Rocks of Southwestern Iowa
    Highway Construction Materials From the Consolidated Rocks of Southwestern Iowa
    Hershey, H Garland ;
    Brown, C. N
    1960-01-01 | PDF
    Southwestern Iowa, unlike other parts of the State, does not have plentiful near-surface supplies of stone available for highway construction purposes. The long and intensive search for such road material by quarrymen, highway engineers, geologists, and others interested in all phases of stone use resulted in a growing conviction that the only hope ...
  • Viscosity in hot mix construction
    Viscosity in hot mix construction.
    Adam, Verdi
    1959-11-01 | PDF
    Viscosity, one of the oldest known and tested properties of Asphalt, yet one of the least studied is recently being given the attention it so rightfully deserves. Numerous engineers did recognize the importance of this property to the extent that several papers and magazine articles were written on the subject. Some of these pertaining to viscosity ...
  • Study of Cost Structures and Cost Finding Procedures in the Regulated Transportation Industries
    Study of Cost Structures and Cost Finding Procedures in the Regulated Transportation Industries
    R.L. Banks & Associates
    1959-11-01 | PDF
    The study of transportation costs is an extensive, relatively neglected, but dynamic subject. In view of its importance to the well-being of the national transportation network, it is a subject that bids fair to receive increasing attention, although many have found it difficult to comprehend, due both to the inherent conceptual obscurities which a ...
  • Annual Report of the Maritime Administration 1959 MARAD 1959
    Annual Report of the Maritime Administration 1959 [MARAD 1959]
    United States. Maritime Administration
    1959-10-19 | Annual Reports of the Maritime Administration | PDF
    Report of the Federal Maritime Board and Maritime Administration covering their activities for the fiscal year ended June 30, 1959.
  • A Report on the Physical Properties of Structural Quality Lightweight Aggregate Concrete
    A Report on the Physical Properties of Structural Quality Lightweight Aggregate Concrete
    Jones Jr, Truman R. ;
    Hirsch, T. J.
    1959-08-01 | PDF
    This is the final report of a very comprehensive study of structural quality lightweight aggregate and lightweight aggregate concrete using aggregates produced in Texas. The work was sponsored by the Texas State Highway Department and was done as a part of research project RP-7 entitled "Use of Prefabricated and/or Prestressed Elements in Highway S ...
  • Statement of Policy on Public Resolution 17 73rd Congress
    Statement of Policy on Public Resolution 17 - 73rd Congress
    United States. Department of Transportation. Maritime Administration
    1959-07-24 | PDF
    The Maritime Administrator has authorized the following statement describing the policies and procedures in administration of Public Resolution 17, 73rd Congress, 48 Stat. 500, 15 USC 616 (a) as applied to credits of the Export-Import Bank of Washington. A statement of policies and procedures with respect to other agencies of the government will be ...
  • Application of Marshall Method in Hot Mix Design
    Application of Marshall Method in Hot Mix Design
    Lehmann, H. L. ;
    Adam, Verdi
    1959-06-21 | PDF
    This study found that, even though more research is needed in the correlation of laboratory mixing with pugmill mixing of hot mix asphalt, repeatability of results in using the Marshall Method can be improved by taking several precautionary measures. The results are highly affected by viscosity of the asphalt and the same condition is seen in pavem ...
  • An Evaluation of Trinity River Aggregates of Marginal Quality for Use in Portland Cement Concrete Pavements
    An Evaluation of Trinity River Aggregates of Marginal Quality for Use in Portland Cement Concrete Pavements
    Jones Jr, Truman R. ;
    Hirsch, T. J.
    1959-06-01 | PDF
    For many years the Trinity River sand and gravel deposits in the vicinity of Dallas have provided aggregates of excellent quality suitable for making structural concrete of the highest type. Unfortunately, these deposits are being rapidly exhausted. In the same general area, however, there is a large potential supply of concrete aggregates which by ...
  • The Mass Transportation Problem in Illinois
    The Mass Transportation Problem in Illinois
    Illinois. Mass Transportation Commission
    1959-06-01 | PDF
    Prepared by the State Mass Transportation Commission for the Honorable William G. Stratton, Governor of Illinois and the Honorable Members of the 71st General Assembly. The study contains the findings and recommendations of the Illinois State Mass Transportation Commission, which was required to study and analyze all phases of mass transportation i ...
  • Erosion Control on Highway Backslopes Annual Progress Report 1959
    Erosion Control on Highway Backslopes: Annual Progress Report 1959
    Schmidt, Berlie ;
    Shrader, W D
    1959-01-01 | PDF
    During 1959, research was continued by the Agronomy Department in cooperation with the Iowa Highway Commission on vegetative establishment and erosion control on highway backslopes (Project 1010). The work was continued at previously established sites and also several new experiments were initiated during the year. The work will be discussed for ea ...
  • Use of expanded clay aggregate in bituminous construction
    Use of expanded clay aggregate in bituminous construction.
    Lehmann, H. L. ;
    Adam, Verdi
    1959-01-01 | PDF
    In an effort to find a solution to the shortage of aggregate, for use in highway construction, Louisiana Department of Highways initiated a study.In early 1955, we started experimenting with expanded aggregate or lightweight aggregate as commonly referred to in Louisiana. Our first objective was to develop a satisfactory hot mixture. The preliminar ...
  • Annual Report of the Maritime Administration 1958 MARAD 1958
    Annual Report of the Maritime Administration 1958 [MARAD 1958]
    United States. Maritime Administration
    1958-10-14 | Annual Reports of the Maritime Administration | PDF
    Report of the Federal Maritime Board and Maritime Administration covering their activities for the fiscal year ended June 30, 1958.
  • Compaction of bituminous concrete with selfpropelled pneumatic tire rollers in Louisiana
    Compaction of bituminous concrete with self-propelled pneumatic tire rollers in Louisiana.
    Adam, Verdi
    1958-10-01 | PDF
    The main objective of this investigation was to study the possibilities of improving the density of asphaltic concrete pavements at the time of construction to approach the values obtained during the first year of traffic service, in order to eliminate excessive rutting (longitudinal grooves) resulting from additional densification by heavy loads. ...
  • Better Transportation for Your City A Guide to the Factual Development of Urban Transportation Plans
    Better Transportation for Your City: A Guide to the Factual Development of Urban Transportation Plans
    National Committee on Urban Transportation (U.S.)
    1958-01-01 | PDF
    This handbook was prepared by the National Committee on Urban Transportation to help cities do a better job of transportation planning through systematic collection and analysis of basic facts.
  • Drainage Areas of Iowa Streams
    Drainage Areas of Iowa Streams
    Larimer, O. J
    1957-12-01 | PDF
    In order that the drainage-area information of the interior streams of Iowa be of uniform accuracy and available to all users of these data, this report has been compiled, and the drainage areas of all streams in excess of 5 square miles are listed. For the larger streams, drainage areas have been determined at numerous intermediate points. As a re ...
  • Annual Report of the Maritime Administration 1957 MARAD 1957
    Annual Report of the Maritime Administration 1957 [MARAD 1957]
    United States. Maritime Administration
    1957-10-21 | Annual Reports of the Maritime Administration | PDF
    Report of the Federal Maritime Board and Maritime Administration covering their activities for the fiscal year ended June 30, 1957.
  • Freeway Bridge Vehicle Speed and Placement Survey July 1957
    Freeway Bridge Vehicle Speed and Placement Survey, July, 1957
    Texas Highway Department
    1957-07-01 | PDF
    The intended purpose of this study was to determine the effect on traffic behavior of a vehicle stopped on the six-foot shoulder of a two-lane one-way freeway overpass. In the course of the study, however, it became evident that much of the data being collected was adaptable to further analysis dealing with the general operating characteristics of ...
  • Vehicle Speed and Placement Survey on TwoLane Rural Bridges
    Vehicle Speed and Placement Survey on Two-Lane Rural Bridges
    Texas Highway Department
    1957-06-01 | PDF
    The general objective of this study was to determine the effect of the width of two-lane roadway bridges on the lateral placement of vehicles as compared with the lateral placement on a two-lane road. The lateral placement near the end and near the middle of a long bridge was also measured to determine whether or not the vehicles moved laterally wh ...
  • Vehicle Speed and Placement Survey on TwoLane Rural Highways
    Vehicle Speed and Placement Survey on Two-Lane Rural Highways
    Texas Highway Department
    1957-03-01 | PDF
    This study was conducted primarily to obtain facts about vehicle behavior under various conditions on two lane roads as a guide to formulating future design standards. In general, the study was limited to traffic volumes that can reasonably be accommodated on two lanes. The results and findings should, therefore, be applicable only to those roads w ...
  • Parking 1957
    Parking [1957]
    Burrage, Robert H. ;
    Mogren, Edward G.
    1957-01-01 | PDF
    Progress in parking has been made in spite of discordance and difficult circumstances. From a broad outlook, most improvement has come from insistent pressures of the problem and from an increasingly realistic appreciation of probable consequences. Widespread efforts of considerable financial importance have been made in areas where the problem bec ...
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