Performance Of Kdot Temporary Erosion Control Measures

Download or read book Performance of KDOT Temporary Erosion-control Measures written by Bruce M. McEnroe and published by . This book was released on 1997 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to develop practical guidance for temporary erosion control measures on highway projects in Kansas. Recommendations are based on the field monitoring of current measures, on-site testing of alternative measures, questionnaire responses from Kansas Department of Transportation (KDOT) construction personnel, and a comprehensive review of the practices of other organizations. These recommendations include changes to the current KDOT specifications and changes in the implementation of the current specifications. Whether a temporary erosion control measure succeeds or fails depends on where and how it is installed and how it is maintained. Most of the measures found in the KDOT specifications provide adequate erosion and/or sediment control when correctly followed. Improper placement, faulty installation, use of substandard materials, and inadequate maintenance were examples of failure to follow specifications fully. Based on findings and comments received from field personnel, most of these errors appear to be caused by a misunderstanding of how the temporary erosion control measures operate. The on site testing of new temporary erosion control products yielded some successes and some failures. The Triangular Silt Dike and the Rock Ditch Check performed very well and were included in the final recommendations. The High-Porosity Silt Fence and the Bio-log Ditch Check proved ineffective. KDOT should institute a program of on-site testing to determine the effectiveness of new erosion control products as a way to continually improve the erosion control specifications. The primary product of this research is the KDOT Temporary Erosion Control Manual. This manual provides the practical guidance needed for the design, installation, inspection, and maintenance of the most appropriate temporary erosion control measures for KDOT construction sites. It will be used statewide by designers, contractors, installers, and inspectors.