This report includes a feasibility study and system design for an initial prototype of a sensing system for pre-excavation subsurface investigation for tunnels in rock. Tunnels in rock are very expensive, and costs often rise far above estimates when unforeseen problems are encountered during excavation. New techniques in rapid excavation technolog
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A six span four hundred and fifty foot long continuous composite girder bridge has been subjected to extensive dynamic testing to identify its structural dynamic properties. Transverse motions were induced by quick release pullback testing and vertical motions were induced by normal vehicular traffic. Analysis of the data obtained indicates that th
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Effective control of the undesirable effects of highway generated noise requires a three-part approach: 1) Source emission reduction 2) Improved highway design, and 3) Land use control. The first two components are currently being addressed by private industry and by Federal and state agencies. The third area is traditionally an area of local gover
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A computer program was written and tested that performs a realistic Wave Equation Analysis of Piles driven by any type of impact hammer. Conventional pile and soil models were used in addition to both a thermodynamic model for diesels and refined mechanical hammer models. The program development was aimed at providing a simple input and both a flex
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United States. Department of Transportation. Federal Highway Administration
1976-06-28
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In this publication are presented selected data on highway toll facilities in the United States in operation, under construction, or proposed at the beginning of 1976. Table T-1 lists all known toll facilities in operation, under construction, or financed as of January 1, 1976. Table T-2 lists those projects considered to be under serious considera
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In the last few years it has become the conviction of some investigators that, instead of blaming the absolute values of speeds for accidents, it may be more prudent to examine the extent to which accident-involved vehicles have deviated from the average speeds of surrounding traffic flow. The relationship between accident involvement rate and the
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This report presents a comprehensive review of the UTCS/BPS operation and maintenance. The results and conclusions presented herein highlight system and equipment operating and maintenance experience and the costs, management and staffing for these related tasks.
The objective of this project was to develop a simple test to design bituminous concrete mixtures for fatigue resistance. Included are two literature reviews: (1) current fatigue testing procedures, and (2) simple test methods that offer possibilities for fatigue prediction. Seven bituminous concretes representing five areas of the United States we
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This manual provides guidelines for the design and conduct of soil grouting operations, from the selection of the grout and the design of the injection pattern to construction control methods and evaluation of the completed treatment. This report emphasizes grouting applications associated with excavation and tunneling in an urban environment. It d
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Surface Impregnation of New Concrete Bridge Decks; Breakaway Barricades; Highway Design for Motor Vehicles—A Historical Review Part 6: Development of a Rational System of Geometric Design; Right Turn on Red; Driver Expectations at Freeway Lane Drops; Twenty-two Nations Working Together in Highway Research
The objective of this study is to assess horizontal drilling as an alternative to pilot tunneling in geological investigation prior to the design and construction of highway tunnels and to identify means to increase the penetration capability and accuracy and decrease the cost of horizontal drilling. This volume evaluates the potential for improvin
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Over 1.7 billion tons of mining and metallurgical wastes are produced each year in the United States. Many of these materials possess properties which make them potentially useful for construction purposes. Although some of these materials have been successfully used in certain phases of highway construction, most are avoided in favor of convention
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This study was performed to determine the availability of mining and metallurgical wastes and to assess their potential for use in various aspects of highway construction. A review was made of domestic and foreign literature pertaining to the production and use of these waste materials. This review covered references on the quantities, locations, c
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Roadway delineation treatments and systems are those devices and techniques which individually or in combination provide guidance, regularoty, or warning information to drivers under various highway situations. This state-of-the-art report on roadway delineation systems constitutes an update to the National Cooperative Highway Research Program Repo
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The pozzolanic properties of fly ash, which enable it to react with lime to form cementitious products, have made fly ash a good quality base or subbase course material when used with lime or cement to stabilize aggregates and soils, or when used alone with lime or cement. Strength and durability criteria have been established for this application,
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