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Outline

Title
Abstract
Design Procedure
Design Methodology
Summary of Riprap Design Procedures
Riprap D50 Design Equations and Results
Design of Concrete Block Systems
Summary of Hard Armor Design
Introduction to Product Classification
Introduction
Properties of Erosion Control Materials
: Method of Measurement
: Materials
References
All Topics
Business and Management
Finance

Study of Side Ditch Liners for Highway Application

Profile image of Philippe BourdeauPhilippe Bourdeau

1997

https://doi.org/10.5703/1288284313467
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288 pages

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1 file

Abstract

Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration.

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References (68)

  1. VDOT "Approved Products List" for Erosion Control Materials EC-2: Permissible Velocity 2.5-4.0fi/s
  2. Curlex Anti-wash Geojute Dekowe 700, 900
  3. X-Cel, X-Cel Superior, Permamat 100
  4. Jute Mesh -Belting Bagging Co. Ridgegrow Excelsior ECB Jute Mesh -JMD Std & High Velocity Excelsior Jute Mesh -Ludlow Manufacturing BioD-Mat 70, 90
  5. North American Green S-75, SC-150 North American Green C-125
  6. Soil Saver Heavy Jute Mesh Earthlock -ECS Products EC-3 Type A: Permissible Velocity 4.0-7.0ft/s Enkamat 7005, 7010 -Akzo Industrial Sys.
  7. Landlok 1050 -Synthetic Industries Miramat Regular (18 oz/yd ) -Nicolon EC-3 Type B: Permissible Velocity 7.0 -J 0.0 ft/s Bon Terra America SFB Tensar TBI 000 & TM3000 Landlok 435, 450, 460, & 1060 PEC-MAT -Greenstreak Enkamat 7012, 7020, 7210, & 7220
  8. Miramat Heavyweight -Nicolon North American Green P-300, P300P
  9. Table 5-2 Virginia DOT Approved Products List Ahmed, A, F. (1989), "Model Study of Side Slope Riprap", Proceedings of the International Symposium on Sediment Transport Modeling, New Orleans, LA 1989, pp. 233-241.
  10. Allen, S. R. (1996), "Evaluation and Standardization of Rolled Erosion Control Products", Geotextiles and Geomembranes, Vol. 14, pp. 207-221.
  11. Anonymous, (1988), "Geomatrix Aids Soil Erosion Problem", Better Roads. Vol. 58, No. 3, pp. 38.
  12. Anonymous, (1990), "Fabric Controls Roadside Erosion", Better Roads. Vol. 58, No. 11, Nov. 1990, pp. 28-29.
  13. Austin, Deron, and Carroll, R. G, (1993), "History Investigation of the Role of Geosynthetics in Interrill Soil Erosion and Sediment Control", Geotechnical Fabrics Report. Vol. 11., No. 3, April 1993, pp. 16-33.
  14. Austin, Deron, and Theisen, Marc S., (1994) "BMW Extends Vegetation Performance Limits", Geotechnical Fabrics Report. April/May 1994, pp. 8-16.
  15. Austin, Deron N, and Ward, Lynn E., (1996), "ECTC Provides Guidelines for Rolled Erosion Control Products", Geotechnical Fabrics Report. Jan/Feb. 1996, pp. 18-21.
  16. Barrett, James, "How to Control Roadside Erosion", Better Roads. Feb. 1990, Vol. 60, No. 2, pp. 24-25.
  17. Bathurst, James, & Li, Ruh-Ming, & Simons, Daryl, B., "Resistance Equation for Large- Scale Roughness", Journal of the Hydraulics Division, Vol. 107, No. HY12, Dec. 1981, pp. 1593-1613.
  18. Blodgett, J.C. (1986), "Rock Riprap Design for Protection of Stream Channels Near Highway Structures -Volume 1, Hydraulics of Open Channels", USGS Water Resources Investigations Report 86-4127, 65 pages.
  19. Blodgett, J.C. (1986), "Rock Riprap Design for Protection of Stream Channels Near Highway Structures -Volume 2, Evaluation of Riprap Design Procedures", USGS Water Resources Investigations Report 86-4128, 95 pages.
  20. C-l Appendix C -References
  21. Brown, Scott, & Clyde, Eric (1989), "Design of Riprap Revetment (Revised HEC-1 1)", FHWA Report No. FHWA-IP-89-016, 169 pages.
  22. Cabalka, Dwight, & Lutyens, Don (1996), "Revetment Quenches Erosion at Starved Rock State Park" Geotechnical Fabrics Report, Vol. 14, No. 5, June/July 1996, pp. 32-35.
  23. Carroll, R.G. Jr., and Theisen, Marc S, (1990), "Turf Reinforcement for Soft Armor Erosion Protection", Proceedings of the IV International Conference on Geotextiles, Geomembranes and Related Products, June 1990, The Hague, Netherlands.
  24. Carroll, R.G. Jr., Rodencal, Jeff, and Theisen, Marc S., (1991), "Evaluation of Turf Reinforcement Mats and Erosion Control and Revegation Mats Under High Velocity Flows", Proceedings of the XXU Annual Conference of the International Erosion Control Association, Orlando, Florida, USA. f? d> Carroll, R. G., Rodencal, J., and Collin, J, (1992), "Geosynthetics in Erosion Control - The Principles", Geotextiles and Geomembranes, Vol. 11, pp. 523-534.
  25. Chen, Y. H, and Cotton, G K., (1988), "Design of Roadside Channels with Flexible Linings", Federal Highway Administration, Report HEC 15 / FHWA-IP-87-7, McLean, VA USA 1988.
  26. Chih, Ted Yang, (1996), Sediment Transport: Theory and Practice. McGraw Hill Co. Inc., New York, chapter 1-3.
  27. Chow, Ven Te, (1964), Handbook of Applied Hydrology. McGraw Hill Book Co., New York.
  28. Clopper, Paul, E (1990), "Minimizing Erosion damage to Embankments, Spillways, and Channels with Articulated Concrete Block Revetment Systems", Proceedings of the 1990 Conference on Hydraulic Engineering, San Diego, CA Vol. 2, pp. 1 141-1 145.
  29. Cotton, G. K., (1993), "Flow Resistance Properties of Flexible Linings", Proceedings - National conference on Hydraulic Engineering, Part 2, 1993, Published by ASCE, NY, NY, pp. 1344-1349.
  30. Diyaljes, Vishnu, and Stoeck, James, (1990), "Highway Erosion Remediation Measures", Proceedings: International Symposium on Sediment Transportation Modeling, Published by ASCE, NY, NY, pp. 154-159.
  31. Dodson, G. I., (1989), "Vegetated Waterway Linings Reinforced with Geomatrix Matting -Design Methodology and Performance", Canadian Land Reclamation Association, American Society for Surface Mining and Reclamation, Calgary, Canada, and Proceedings of the XXI Annual Conference of the International Erosion Control Association, Washington D.C., Feb. 1990, pp. 249-255.
  32. "Erosion Control Product Data", Geotechnical fabrics Report -1996 Specifiers Guide. Vol. 13, No. 9, Dec. 1995, pp. 163-179.
  33. Escarameia, Eng., M., & May, R. W. (1995), "Stability of Riprap and Concrete Blocks in Highly Turbulent Flows", Proceedings of the Institute of Civil Engineering Water, Maritime, and Energy, Vol. 112, No. 3, Sept. 1995, pp. 227-237.
  34. Froehlich, David, C, & Benson, Craig, A. (1996), "Sizing Dumped Rock Riprap", Journal of Hydraulic engineering, Vol. 122, No. 7, July 1996, pp. 389-395.
  35. Fuller, Chip (1992), "Concrete Blocks Gain Acceptance as Erosion Control Systems", Geotechnical Fabrics Report, April 1992, pp. 24-34.
  36. Godfrey, Sally, and Tatge, Joan, (1995), "Erosion Control Materials Tested at Texas Field Facility", TR News. Nov/Dec 1995, pp. 11-13, 35.
  37. Hall, J. M., & Moe, J. A, & Legarra, J. A. (1970), "Bank and Shore Protection in California Highway Practice, State of California Business and Transportation Agency, Department of Public Works, Division of highways, 1970, pp. 101-110.
  38. Hamm, John L, and Busche, Nancy, (1993), "Erosion Control: A Statewide Study -New Product Evaluation Final Report", Wisconsin Department of Transportation, Division of Highways, Research Report Number: WI-03-93. 15 pages.
  39. Hewlett, H.W.M., Boorman, L.G., and Brambley, M.E., (1987), "Design of Reinforced Grass Waterways", Construction Industry Research and Information Report 116, London, England. "High Velocity Shear Testing of Landlok ECRM 450, Landlok TRM 1060, Polyjute, and Pryamat Erosion Control Materials -A Laboratory Study", Synthetic Industries, Chattanooga, TN, 1995.
  40. Holtz, Robert D, Christopher, Barry, and Berg, Ryan, (1995), Geosynthetic Design and Construction Guidelines -Participant Notebook. Federal Highway Administration, Report No. FHWA-HI-95-xxx, May 1995, chapter 2-3, pp. 27-105.
  41. Illinois Department of Transportation, Standard Specifications for Road and Bridge Construction. 1994, SS 251, 283, 783.
  42. Lamberton, Bruce, A. (1989), "Fabric Forms for Concrete", Concrete International: Design & Construction, Vol. 1 1, No. 12, Dec. 1989, pp. 58-67.
  43. C-3 Appendix C -References
  44. Lancaster, Tim, and Austin, Deron, (1994), "Classifying Rolled Erosion Control Products: A Current Perspective", Geotechnical Fabrics Report. Vol. 12, No. 8, Oct/Nov 1994, pp. 16-22.
  45. Maynord, Stephen, T (1991), "Flow Resistance of Riprap", Journal of Hydraulic Engineering, Vol. 117, No. 6, June 1991, pp. 687-695.
  46. Maynord, Stephen, T (1992), "U.S. Army Corps of Engineers Riprap Design for Flood Channels", Transportation Research Record # 1420, pp 14-22.
  47. Maynord, Stephen, T (1995), "Gabion-Mattress Channel Protection Design", Journal of Hydraulic Engineering, Vol. 121, No. 7, July 1995, pp. 519-522.
  48. Missouri Highway and Transportation Department, (1983), "Investigation of Erosion Control Materials for Ditches in Highway Corridors in Missouri", Published by Division of Materials and Research, Report No. 81-3.
  49. Monnet, Walter (1990), "Concrete Mats in Hydraulic Engineering and Experience", Geotextiles, Geomembranes, and Related Products, 1990 Rotterdam.
  50. Northcutt, Paul, (1993), "Field Performance Testing of Roll Type Erosion Control Blankets Through the Erosion Control Field Laboratory, Proceedings of the XXIV Annual Conference of the International Erosion Control Association, Indianapolis, IN, Feb. 1993, pp. 187-192.
  51. Northcutt, Greg, (1995), "Geosynthetics Add Another Dimension to Erosion Control", Erosion Control, Journal of the IECA May/June 1995, pp. 34-41.
  52. Ohio Department of Transportation, Construction and Materials Specifications. 1995, SS 666-673, 839-840.
  53. Ohio Department of Transportation, Location and Design Manual. 1992, pp. 11-2 -11-5.
  54. Simons, Daryl, B., & Senturk, Fuat (1977) Sediment Transport Technology, Water Resources Publications, Fort Collins, CO, 1977, Ch. 7, pp. 418-457.
  55. Starrett, Ken (1994), "Concrete Revetment System Controls Severe Erosion", Public Works, Vol. 125, No. 13, pp. 46-47.
  56. Software Manual: "EC-Design -Erosion Control Design Package", Synthetic Industries, Chattanooga, TN, 1995.
  57. Software Manual: "Erosion Control Materials Design Software", North American Green, Evansville, IN, 1995.
  58. Sprague, C, J., & Koutsourais, M., M. (1992), "Fabric Formed Concrete Revetment Systems", Geotextiles and Geomebranes, Vol. 11, pp. 587-609.
  59. Texas Department of Transportation, "Final Performance Analysis through the 1995 Test Cycle -Class II, Channel Protection, Performance Testing of Selected Erosion Control Products at the Texas Department of Transportation / Texas Transportation Institute Hydraulics and Erosion Control Laboratory, prepared by Paul Northcutt, March 1996.
  60. Theisen, Marc S, (1988), "Cost Effective Technique for Successful Erosion Control", Proceedings from the High Altitude Revegetation Workshop, No 8, Fort Collins, CO, USA, 1988.
  61. Theisen, Marc S, and Carroll, R.G. Jr., (1990), "Turf Reinforcement -the 'Soft Armor' Alternative", Proceedings of the XXL Annual Conference of the International Erosion Control Association, Washington D.C., USA.
  62. Theisen, Marc S, (1991), "The Role of Geosynthethics on Erosion and Sediment Control: An Overview", Proceedings of the 5th GRI Seminar, Geosynthetics in Filtration, Drainage, and Erosion Control, Philadelphia, PA USA.
  63. Theisen, Marc S, (1992), "Evaluation of Biotechnical Composites Under High Velocity and Shear Conditions", Conference Proceedings: International Erosion Control Association, 1992, pp. 285-301.
  64. Theisen, Marc S, (1992), "The Expanding Role of Geosynthetics in Erosion and Sediment Control", Informational Paper published by Synthetic Industries, Chattanooga, TN, 20 pages. Theisen, Marc S, (1992), "The Role of Geosynthetics in Erosion and Sediment Control: An Overview", Geotextiles and Geomembranes, Vol. 11, pp. 535-550.
  65. Theisen, Marc S, (1992), "Geosynthetics in Erosion and Sediment Control", Geotechnical Fabrics Report. Vol. 10, No. 4, May/June 1992, pp. 26-35..
  66. Theisen, Marc S, Hageman, M. and Austin, Deron, (1995), "Geosynthetic Erosion Mats for the Horse Ranch -A Case History," Geosynthetics. Vol. 1, 1995, pp. 405-418, and Proceedings of the XXVI Annual Conference of the International Erosion Control Association, 1995.
  67. Thibodeaux, Kirk, (1985), "Performance of Flexible Ditch Linings", Federal Highway Administration, Report Number: FWHA/RD/86/114, September 1985, 91 pages.
  68. U.S. Department of Transportation, Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects. FP-92, 1992, Federal Highway Administration, SS 713, pp. 618-629.

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