Download or read book Erosion Protection for Soil Slopes Along Virginia s Highways written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of the state of practice for designing slope erosion control measures within VDOT's nine districts has been conducted. On the basis of the survey, it is clear that there are no specific design procedures currently in use within VDOT for dealing with slope erosion. VDOT designers generally try to limit erosion by diverting runoff from adjacent areas, controlling concentrated flows on slopes, and establishing vegetation on slopes as quickly as possible. In addition, the Federal Highway Administration (FHWA) and the Departments of Transportation in states surrounding Virginia (Maryland, West Virginia, Kentucky, Tennessee, and North Carolina) were contacted. The state of practice for the FHWA and for these states appears to be similar to that used by VDOT. A review of the literature for soil erosion was performed. The universal soil loss equation (USLE), an empirical equation developed by the U.S. Department of Agriculture, was found to provide the best available quantitative tool for evaluating factors controlling the erosion process and determining what level of protection is appropriate. The authors recommend that the USLE be used to supplement VDOT's current principle-based design practices.
Download or read book Erosion protection for soil slopes along Virginia s highways written by and published by . This book was released on 2000 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research on Design for Prevention of Ditch Erosion on Virginia Highways written by and published by . This book was released on 1999 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Roadside ditch erosion has been problematic on Virginia highways. VDOT, through the Virginia Transportation Research Council, requested that roadside ditch erosion be investigated by means of a research project. Virginia Tech was selected to conduct this study. In support of this research, design guidance documents were surveyed to learn the current established policy and procedures for soil data collection and reporting, and the design practice for hydrologic and hydraulic analyses of roadside ditches. Site visits to each of Virginia's nine construction districts were made to interview district personnel about their personal experience with roadside ditch design, performance, and erosion failures. Current ditch design practices in nine other states were investigated through the collection and survey of state drainage manuals, and phone interviews with DOT personnel. Finally, an extensive review of current literature was performed with the intent of investigating current research on ditch erosion and erosion control. Results of the research indicate that three major factors are contributing to the occurrence of erosion in roadside ditches. They include, 1) insufficient soil information collected on road projects and reported in unusable formats for the hydraulic designers, 2) overuse of default values and criteria in hydraulic design, and 3) geographical and management issues not currently encompassed by current VDOT ditch design policies and procedures. Recommendations directed at these factors are provided, along with tables presenting updated correlations between site-specific conditions and hydraulic parameters for design.
Download or read book Efficiency of Erosion Control Practices of the Virginia Department of Highways and Transportation written by David C. Wyant and published by . This book was released on 1982 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stream monitoring stations have been installed on eight construction projects under Phase 1 of this study. Monitoring on four of the projects is complete and monitoring on the remaining four is continuing. On the basis of the limited data, it appears that the amount of suspended sediment transported from a construction project in the Valley and Ridge region, a predominantly clayey soil area, is quite large as compared to that from a project in the Piedmont region, a silty soil area. This trend is especially evident when no erosion control measures are used. It also has been noted that relatively large amounts of sediment are generated during the spring and fall, when the soil generally is most susceptible to erosion.
Download or read book Erosion Control on Highway Construction written by National Research Council (U.S.). Highway Research Board and published by National Academy Press. This book was released on 1973 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erosion Control on Logging Roads in the Appalachians written by J. N. Kochenderfer and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2In the steep terrain of the Appalachian Mountains much damage to forest streams is caused by erosion on logging roads. Muddy water that is unsuitable for fish, swimming, or human consumption often can be traced to these eroding roads. This paper has been prepared to sum up what land managers know about preventing and controlling erosion on logging roads in the Appalachians. S3.
Download or read book Early Erosion control Practices in Virginia written by Arthur Ryker Hall and published by . This book was released on 1937 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efficiency of erosion control practices of the Virginia Department of Highways and Transportation written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Conservation written by and published by . This book was released on 1961 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erosion and Sediment Control Handbook written by Perry Y. Amimoto and published by . This book was released on 1978 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erosion Control on Mountain Roads written by Charles John Kraebel and published by . This book was released on 1936 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erosion Control on Mountain Roads written by California Forest and Range Experiment Station and published by . This book was released on 1935 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Virginia State Documents written by and published by . This book was released on 2005 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Design Criteria for Soil Slopes on West Virginia Highways written by George Alan Hall and published by . This book was released on 1974 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Virginia Erosion and Sediment Control Handbook written by Virginia Soil and Water Conservation Commission and published by . This book was released on 1980 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regulations for Soil Erosion Control Along State and County Highways written by Oklahoma. Department of Highways and published by . This book was released on 1946 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Maintenance Vegetation for Erosion Control Manual for development and management of low maintenance vegetation for erosion control along West Virginia highway corridors written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
