Download or read book The Use of a Dipstick Profilometer to Calibrate the NAASRA Roughness Meter with the International Roughness Index written by G. M. Johnson and published by . This book was released on 1986* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Second North American Conference on Managing Pavements November 2 6 1987 Royal York Hotel Toronto Ontario Canada written by and published by . This book was released on 1987 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Conference written by Australian Road Research Board and published by . This book was released on 1994 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A new method of calibrating NAASRA roughness meters written by and published by . This book was released on 1980 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The International Roughness Index for Calibration and Correlation of Measuring Systems Results of an International Experiment written by M. Sayers and published by . This book was released on 1984 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Pavement Technology written by Geoff Jameson and published by . This book was released on 2012 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of pavement technology is of critical importance for all transportation agencies in Australia and New Zealand. Austroads and others (e.g. state road authorities, local government, and industry) have amassed a great deal of knowledge on pavement technologies, techniques, and considerations. The purpose of the Austroads Guide to Pavement Technology is to assemble this knowledge into a single authoritative electronic publication that will be a readily available, accessible and comprehensive resource for practitioners in Australia and New Zealand. The target audience for the Austroads Guide to Pavement Technology includes all those involved with the management of roads, including industry and students seeking to learn more about the fundamental concepts, principles, issues and procedures associated with pavement technology. Part 2: Pavement Structural Design-provides advice for the structural design of sealed road pavements. The advice has been generally developed from the approaches followed in the Austroads member authorities. However, as it encompasses the wide range of materials and conditions found in Australia and New Zealand, some parts are broadly based. This part covers the assessment of input parameters needed for design, design methods for flexible and ridgid pavements, and gives guidance to the economic comparisons of alternative pavement designs.
Download or read book Guide to Pavement Technology written by and published by . This book was released on 2009 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manual for Profile Measurement written by and published by Strategic Highway Research Program (Shrp). This book was released on 1994 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual describes procedures to be followed when measuring pavement profiles for the Long-Term Pavement Performance (LTPP) program using the K.J. Law Profilometer (registered trademark), Face Technologies Dipstick (registered trademark), and the rod and level. Field testing procedures, data collection procedures, calibration of equipment, record keeping, and maintenance of equipment for each of the profiling methods are described.
Download or read book AASHTO Guide for Design of Pavement Structures 1993 written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 1993 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Download or read book Roads and Airfields written by U.S. Army Engineer School and published by . This book was released on 1951 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maintenance of Unpaved Roads written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1979 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Evaluation of Hand operated Water Pumps for Use in Developing Countries written by Consumers' Association. Testing and Research Laboratory and published by . This book was released on 1982 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines for Conducting and Calibrating Road Roughness Measurements written by Michael W. Sayers and published by . This book was released on 1986 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road roughness is gaining increasing importance as an indicator of road condition, both in terms of pavement performance, and as a major determinant of road user costs. This paper defines roughness measurement systems hierachically into four groups, ranging from profilometric methods (2 groups), through response type road roughness measuring systems (RTRRMS's), and, subjective evaluation. The International Roughness Index (IRI) is defined, and the programs for it's calculation are provided. The IRI is based on simulation of the roughness response of a car travelling at 80 km/h. The report explains how all roughness measurements can be related to this scale, also when travelling at lower speeds than 80 km/h. The IRI emerges as a scale that can be used both for calibration and for comparative purposes.
Download or read book Vehicle Speeds and Operating Costs written by Thawat Watanatada and published by Johns Hopkins University Press. This book was released on 1987 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road-user costs are the largest cost elements in road transport. Improvements in road conditions can yet pay substantial dividends by reducing vehicle operating costs. Expressing vehicle operating costs in relation to road characteristics--geometry and pavement condition--is the logical approach. For certain cost components, especially fuel consumption, the required data can be obtained by controlled experiments. Vehicle maintenance costs utilizing extensive road-user surveys are needed. This volume takes an aggregate-mechanistic view of vehicle speed and operating costs under free flow conditions. Basing their analysis on the mechanistic principles of propulsion and motion as well as on postulated assumptions of driver behavior, the authors arrive at predictions at three levels of detail, ranging from a simulation method for use in detailed geometric design at the link level to an aggregate method for use in investment planning at the sectoral level. The models were estimated using the comprehensive database collected in the Brazil-UNDP-World Bank highway research project and were validated along with data sets from India. One of the significant contributions to highway economics research made in this study is the probabilistic limiting velocity approach to steady-state speed prediction, which, combined with the aggregate-mechanistic methodology, will provide a possible basis for future research on the far more complex problem of operating costs under congested conditions.
Download or read book Sheep and Goats in Developing Countries written by Winrock International Livestock Research and Training Center and published by . This book was released on 1983 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study are to assess the role of small ruminants (sheep and goats) in the food production systems of developing countries, examine their advantages and disadvantages, analyze the constraints limiting their further contribution to the welfare of small farm/low income rural producers, prescribe measures for overcoming these constraints, and make recommendations related to potential donor involvement in support of the development of sheep and goat production. Small ruminants are viewed as an integral, but not dominant component of complex agricultural systems. Particular emphasis is placed on sheep and goats in mixed herds grazing dry rangelands and in small mixed farm systems in medium to high rainfall areas. An analysis of major constraints -- ecological, biological, policy, and socio-economic -- leads to recommendations on the need for a balanced production system approach for research, training and development programs, and for a combination of support activities such as herd health programs, and formulation of favorable credit, marketing and pricing policies for small ruminants and their products.
Download or read book The African Trypanosomiases written by C. W. Lee and published by World Bank Publications. This book was released on 1983 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tsetse-transmitted trypanosomiases are diseases of man and his domestic livestock that have contributed to the prevalence of poverty, malnutrition, and disease in much of tropical Africa. Although the human disease has caused considerable suffering and death, it is the disease of domestic livestock which has, in economic terms, had the most profound effects as a major factor restricting rural African development, particularly by limiting food supply and land use. After a general discussion of the disease and its effects, this report describes the problems and techniques of controlling tsetse-transmitted trypanosomiases in the context of rural development in Africa. It also attempts to show that techniques to achieve an effective degree of trypanosomaiasis control, at least in some ecological conditions, already exist and that there is now an urgent need to put them into practice in conjunction with practical land use programmes.
Download or read book Asphalt Surfacings written by J Cliff Nicholls and published by CRC Press. This book was released on 2002-11-01 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt Surfacings has been written as a reference to the various asphalt course materials and surfacing treatments that are currently available to engineers, enabling them to select the materials and/or treatment that are appropriate for use on specific sites. Appropriate reference is made to the lower structural layers as the properties of all layers interact in producing the required pavement. The current established position in the UK and the emerging developments throughout the UK and Europe are covered. The contributors are all acknowledged authorities on their particular topics selected from every part of the highway engineering industry to achieve a balance between the various approaches required by the different functions they perform.
