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Author:
Publisher:
ISBN: 9781523108909
Category : Gravel roads
Languages : en
Pages : 88
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Book Description
"TRB National Cooperative Highway Research Program (NCHRP) Synthesis 485: Converting Paved Roads to Unpaved explores how common and under what conditions paved roads are converted to unpaved. NCHRP Synthesis 485 found that the practice of converting paved roads to unpaved is relatively widespread; recent road conversion projects were identified in 27 states. These are primarily rural, low-volume roads that were paved when asphalt and construction prices were low. Those asphalt roads have now aged well beyond their design service life, are rapidly deteriorating, and are both difficult and expensive to maintain. Instead, many local road agencies are converting these deteriorated paved roads to unpaved as a more sustainable solution. According to the report, local road agencies have experienced positive outcomes by converting roads. Many local road agencies reported cost savings after converting, compared with the costs of continuing maintenance of the deteriorating paved road, or repaving. One key to successful conversion is early involvement of the public in the planning process. Other techniques that can be used to improve the overall results of a project include treating or stabilizing granular surfaces to control dust, limiting the rate of aggregate loss, and reducing motor grader/blade maintenance frequency. Stabilization procedures can also improve safety, increase public acceptance, and reduce life-cycle costs and environmental impacts after a conversion has taken place."--Publisher's description.
Author:
Publisher:
ISBN: 9781523108909
Category : Gravel roads
Languages : en
Pages : 88
Get Book Here
Book Description
"TRB National Cooperative Highway Research Program (NCHRP) Synthesis 485: Converting Paved Roads to Unpaved explores how common and under what conditions paved roads are converted to unpaved. NCHRP Synthesis 485 found that the practice of converting paved roads to unpaved is relatively widespread; recent road conversion projects were identified in 27 states. These are primarily rural, low-volume roads that were paved when asphalt and construction prices were low. Those asphalt roads have now aged well beyond their design service life, are rapidly deteriorating, and are both difficult and expensive to maintain. Instead, many local road agencies are converting these deteriorated paved roads to unpaved as a more sustainable solution. According to the report, local road agencies have experienced positive outcomes by converting roads. Many local road agencies reported cost savings after converting, compared with the costs of continuing maintenance of the deteriorating paved road, or repaving. One key to successful conversion is early involvement of the public in the planning process. Other techniques that can be used to improve the overall results of a project include treating or stabilizing granular surfaces to control dust, limiting the rate of aggregate loss, and reducing motor grader/blade maintenance frequency. Stabilization procedures can also improve safety, increase public acceptance, and reduce life-cycle costs and environmental impacts after a conversion has taken place."--Publisher's description.
Author:
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 88
Get Book Here
Book Description
"TRB National Cooperative Highway Research Program (NCHRP) Synthesis 485: Converting Paved Roads to Unpaved explores how common and under what conditions paved roads are converted to unpaved. NCHRP Synthesis 485 found that the practice of converting paved roads to unpaved is relatively widespread; recent road conversion projects were identified in 27 states. These are primarily rural, low-volume roads that were paved when asphalt and construction prices were low. Those asphalt roads have now aged well beyond their design service life, are rapidly deteriorating, and are both difficult and expensive to maintain. Instead, many local road agencies are converting these deteriorated paved roads to unpaved as a more sustainable solution. According to the report, local road agencies have experienced positive outcomes by converting roads. Many local road agencies reported cost savings after converting, compared with the costs of continuing maintenance of the deteriorating paved road, or repaving. One key to successful conversion is early involvement of the public in the planning process. Other techniques that can be used to improve the overall results of a project include treating or stabilizing granular surfaces to control dust, limiting the rate of aggregate loss, and reducing motor grader/blade maintenance frequency. Stabilization procedures can also improve safety, increase public acceptance, and reduce life-cycle costs and environmental impacts after a conversion has taken place."--Publisher's description.
Author:
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 26
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Book Description
On behalf of the Minnesota Local Road Research Board (LRRB), the Western Transportation Institute (WTI) at Montana State University (MSU) and the University of California Davis (UCD) developed A Guide to Successfully Convert Severely Distressed Paved Roads to Engineered Unpaved Roads. The guide serves as a comprehensive information source on effective practices for converting severely distressed paved roads to acceptable unpaved surfaces. This final report recounts the effort associated with the seven tasks involved in the completion of this project, the location of each task deliverable, and future research needs to advance this topic.
Author: Ken Skorseth
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 112
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Book Description
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
Author:
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 74
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Book Description
The Minnesota Department of Transportation and the Local Road Research Board initiated a preliminary investigation into the issues surrounding the maintenance, preservation and possible conversion of low-volume paved roads to gravel. Rising costs of pavement materials and stagnant or declining funds for road construction and maintenance prompted the agencies to begin looking into issues surrounding the decision to unpave low-volume roads. To assist in the process and to provide MnDOT and the LRRB with the best, most up-to-date information, CTC & Associates was asked to review the issues associated with the decision to convert paved low-volume roads to gravel roads. This research synthesis highlights relevant research and information related to road surfacing decisions, pavement preservation techniques, cost analysis and current road agency experiences.
Author: F. W. Klaiber
Publisher: Transportation Research Board
ISBN: 0309070031
Category : Bridges
Languages : en
Pages : 143
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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 327: Cost-Effective Practices for Off-System and Local Interest Bridges examines off-system bridge design, construction, maintenance, financing, rehabilitation, and replacement. For this report, 'off-system' refers to those bridges typically owned and maintained by local agencies, and by state agencies on rural and other low-volume roads.
Author: Michael Truscello
Publisher: MIT Press
ISBN: 0262358727
Category : Art
Languages : en
Pages : 378
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Book Description
How "drowned town" literature, road movies, energy landscape photography, and "death train" narratives represent the brutality of industrial infrastructures. In this book, Michael Truscello looks at the industrial infrastructure not as an invisible system of connectivity and mobility that keeps capitalism humming in the background but as a manufactured miasma of despair, toxicity, and death. Truscello terms this "infrastructural brutalism"--a formulation that not only alludes to the historical nexus of infrastructure and the concrete aesthetic of Brutalist architecture but also describes the ecological, political, and psychological brutality of industrial infrastructures.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 110
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Book Description
Author: Pitou van Dijck
Publisher: Routledge
ISBN: 1136188967
Category : Architecture
Languages : en
Pages : 321
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Book Description
This book analyses the potential socio-economic and environmental impacts of the Initiative for Regional Infrastructure Integration in South America (IIRSA), a continent-wide programme. IIRSA aims at facilitating intra-regional trade and at improving trade and transport links with world markets. This is the first book on IIRSA and its potential implications for South America and more specifically for Amazonia. The book provides an in-depth analysis of the infrastructure programme and deals particularly with methods to assess the probable effects of road construction in environmentally fragile territories. To deepen our understanding of the potential impacts of roads in these areas, the book combines insights from economic and environmental sciences and gives a critical review of traditional assessments and strategic environmental assessments (SEAs). A comprehensive approach of assessing impacts is presented in three case studies of SEAs: the Corredor Norte in Bolivia, the road between Manaus and Porto Velho in Brazil, and the proposed road to link Suriname with Brazil.
Author: National Cooperative Highway Research Program
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 794
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Book Description
