Maintenance Of Highway Edgedrains
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Maintenance Of Highway Edgedrains
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Author : Barry Rodney Christopher
language : en
Publisher: Transportation Research Board
Release Date : 2000
Maintenance Of Highway Edgedrains written by Barry Rodney Christopher and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Technology & Engineering categories.
At head of title: National Cooperative Highway Research Program.
Maintenance Of Highway Edgedrains
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Author : Robert H. Baumgardner
language : en
Publisher:
Release Date : 2002
Maintenance Of Highway Edgedrains written by Robert H. Baumgardner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Drainage categories.
Maintenance Of Highway Edgedrains
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Author :
language : en
Publisher:
Release Date : 2000
Maintenance Of Highway Edgedrains written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Video Inspection Of Highway Edgedrain Systems
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Author : Jerome F. Daleiden
language : en
Publisher:
Release Date : 1998
Video Inspection Of Highway Edgedrain Systems written by Jerome F. Daleiden and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Image processing categories.
Minimizing infiltration of water in pavement structures has long been a priority of pavement designers. Incorporation of subsurface edgedrains is frequently an integral part of an pavement drainage system. In order for such a system to be effective however, it must be properly installed and maintained. With advances in video technology, inspection of edgedrain systems can now be conducted quite efficiently. This report documents the results of 287 video inspections of highway edgedrain systems in 29 states. These inspections were conducted to both demonstrate the capabilities of the technology as well as demonstrating some of the common problems associated with the performance of edgedrain systems. Findings indicated not only that the equipment was quite effective in identifying edgedrain performance concerns, but also how widespread the concerns of edgedrain performance are. Almost one third of the systems inspected had nonfunctional outlets, another third were either found to have non-functional mainlines or the mainlines could not be inspected due to physical obstructions. Only one third of the systems inspected were found to be performing as intended. Recommendations are provided for edgedrain design improvements to facilitate performance of the system and their inspections as well as recommendations to improve quality control during construction. Suggestions are also provided for maintenance procedures to address concerns identified in the inspection process. A Draft Guide Specification For Video Edgedrain Inspection and Acceptance is also provided as an Appendix.
Pavement Drainage Theory And Practice
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Author : G L Sivakumar Babu
language : en
Publisher: CRC Press
Release Date : 2019-08-26
Pavement Drainage Theory And Practice written by G L Sivakumar Babu and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-26 with Science categories.
SUMMARY This book provides complete coverage of surface and subsurface drainage of all types of pavements for highways, urban roads, parking lots, airports, and container terminals. It provides up-to-date information on the principles and technologies for designing and building drainage systems and examines numerous issues, including maintenance and designing for flood events. Practical considerations and sophisticated analysis, such the use of the finite element method and unsaturated soil mechanics, anisotropy and uncertainties, are presented. This book allows civil engineers to make the best use of their resources to provide cost effective and sustainable pavements. Features Presents a holistic consideration of drainage with respect to pavement performance. Includes numerous practical case studies. Examines flooding and the impacts of climate change. Includes PowerPoint slides which include quizzes, schematics, figures, and tables.
Pavement Subsurface Drainage Systems
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Author : Barry Rodney Christopher
language : en
Publisher: Transportation Research Board
Release Date : 1997
Pavement Subsurface Drainage Systems written by Barry Rodney Christopher and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Technology & Engineering categories.
This synthesis will be of interest to geologists; hydrologists; geotechnical, pavement, construction, and maintenance engineers; and researchers. State department of transportation (DOT) program managers and administrators will also find it of interest. The synthesis describes the current state of the practice for the design, construction, and maintenance of pavement subsurface drainage systems. It provides information on the positive effects of good subsurface drainage and the negative effects of poor subsurface drainage on pavement surfaces. This report of the Transportation Research Board presents data obtained from a review of the literature and a survey of the state DOTs. It is a supplemental update to NCHRP Synthesis of Highway Practice 96, Pavement Subsurface Drainage Systems (1982). The synthesis provides a supplement to design issues not found in Synthesis 96, but faced by current designers, e.g., type and quality of aggregate, compaction requirements for open-graded aggregates, asphalt and cement binders, and use of geosynthetics. In addition, it describes the effects of design, construction, and maintenance decisions on the performance of pavement subsurface drainage systems.
Effectiveness Of Highway Edgedrains
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Author :
language : en
Publisher:
Release Date : 1992
Effectiveness Of Highway Edgedrains written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Road drainage categories.
Highway sites in ten States, where edgedrains had been retrofitted along the pavement edges, were instrumented to measure concurrent rainfall and edgedrain discharges, piezometric water levels, and soil moisture under the pavement and adjacent shoulders. Soil samples were also collected and their physical and hydraulic properties measured; all sites were found to have relatively low permeabilities. Fifty selected rainfall-runoff events were analyzed to assess the amount of infiltration reaching the pavement subgrades, amounts and timing of edgedrain discharges, and the manner of water movement beneath the pavement. The data indicate that retrofitting longitudinal edgedrains to an existing highway provides a sink to collect water draining laterally off the pavement surface as well as water reaching them from the subgrade voids and channels. The tight, low permeability subgrade material found to exist at all ten sites precluded ready, lateral drainage with or without edgedrains. The edgedrain outlets then serve to short-circuit the combined flow through the highway shoulders. The low permeabilities were also confirmed by the transducer data because piezometric water levels beneath the pavements were generally slow to recede. The data obtained indicate that most of the lateral subgrade movement of water is through voids and channels that develop under the pavements. In a sense, "the horse is already out of the barn" if the deterioration of the highway has reached this state. If highway restoration, as well as new construction, includes providing a permeable subbase as well as edgedrains, the two together should prove the most efficient in restoring the highway. In addition to providing data as to the effectiveness of edgedrains, this study also developed and tested instrumentation and techniques for studying pavement drainage. A dual tipping bucket gage proved most effective in measuring concurrently rainfall and edgedrain discharges. Pressure transducers were effective in measuring piezometric water levels beneath the pavements. Data loggers proved effective in not only recording all data but could be programmed to operate the sensors only and to the extent needed. The need to acquire core samples of the subgrade material and analyze for physical and hydraulic properties was emphasized.
Highway Filter Drains Maintenance Management
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Author : Theodoros Stylianides
language : en
Publisher:
Release Date : 2017
Highway Filter Drains Maintenance Management written by Theodoros Stylianides and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Preferred Methods For Highway Maintenance
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Author :
language : en
Publisher:
Release Date : 1976
Preferred Methods For Highway Maintenance written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Road construction categories.
Integrated Roadside Vegetation Management
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Author : Robert L. Berger
language : en
Publisher: Transportation Research Board
Release Date : 2005
Integrated Roadside Vegetation Management written by Robert L. Berger and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Roadside improvement categories.
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 341: Integrated Roadside Vegetation Management examines the incorporation of integrated roadside vegetation management decision-making processes into highway project planning, design, construction, and maintenance. The report also documents existing roadside vegetation management research and practice.