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Typically easy to construct & inspect

TRADITIONAL WINDROW & TRENCH-FILL REVETMENTS, & A NEW INVENTION, VEGETATED TRENCH-FILL REVETMENT {All 3 are classified as “Setback Revetments”}.

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Typically easy to construct & inspect

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  1. TRADITIONAL WINDROW &TRENCH-FILL REVETMENTS, & A NEW INVENTION,VEGETATED TRENCH-FILL REVETMENT{All 3 are classified as “Setback Revetments”}

  2. THESE ARE ALL SELF-ADJUSTING, SELF-HEALING BANK STABILIZATION METHODS (NOT FOUNDATION DEPENDENT) THAT ARE USUALLY BUILT OUTSIDE THE ACTIVE STREAM CHANNEL

  3. Typically easy to construct & inspect • Bank erosion must occur for the windrow or trenchfill stone to launch into the scoured area • In-stream construction is avoided • Self-adjusting, self-filtering stone is required • Maximum scour depth must be calculated to to determine volume of stone required. Rule of thumb is 1 ton of stone per foot will stabilize 3 ft of scour. • Works best in easily eroded, non-cohesive soils exhibiting a uniform erosion rate throughout the entire bend • Can be quickly & easily constructed, comparatively inexpensive, easy to inspect. Since all work is outside the channel & above OHW, some permits might not be required!

  4. WINDROW REVETMENTSA continuous volume of stone placed on an engineered alignment landward of an actively eroding riverbank or streambank.

  5. WINDROW (SET-BACK) REVETMENT

  6. WINDROW REVETMENT, KANSAS RIVER, EUDORA BEND, KS. Approx. half of the stone has launched, remainder is still on top bank. Bank stable & vegged.

  7. TRADITIONAL TRENCH-FILL REVETMENTS

  8. TRENCH-FILL REVETMENT Calculated volume of stone placed in a trench on an engineered alignment landward of an eroding bank. As erosion undermines the trench, stone is designed to self-adjust (launch) into the scoured area forming a stable, adjustable toe (or toe & mid-bank protection, depending on bank height & depth of trench). In some projects the upper bank is graded & either vegetated or riprapped.

  9. Trenchfill Revetment Excavated Trench Upper bank riprap Disposal Active Eroding Bank Well Graded stone in trench Migrating Channel Initial Channel Cross-Section From Freddie Pinkard COE, Vicksburg District, modified by DLD

  10. Trenchfill Revetment Upper bank riprap Final Channel Cross-section Eroding Bank Launched stone stabilized eroded sections of bank (toe & mid bank) Initial Channel Cross-section From Freddie Pinkard COE, Vicksburg District, modified by DLD

  11. TRENCHFILL REVETMENT, RED RIVER, LA. Designed to provide the correct alignment & bend radii needed for navigation.

  12. Red River, LA.-Trenchfill with upper bank paving. Foreshore almost completely eroded back to the trenchfill stone & weighted toe

  13. TRENCHFILL REVETMENT detail drawings from John McCullah’s www.E-SenSS.com

  14. TRENCHFILL REVETMENT-Stone is on the wrong side of the trench (away from river). When erosion undermines the trench as much stone as possible needs to be launched immediately, not a few stones at a time!

  15. A NEW IDEA, VEGETATED TRENCH-FILL REVETMENTS

  16. A DAVE DERRICK DISCOVERY (DDD)

  17. While 3 projects have been designed using this idea, only one has been built(recently).

  18. VEGETATED TRENCH-FILL REVETMENTS-STEPS IN CONSTRUCTION RIVER SIDE

  19. VEGETATED TRENCH-FILL REVETMENTS-Steps in construction Land Side River side

  20. VEGETATED TRENCH-FILL REVETMENTS-Steps in construction Land Side River side

  21. DONE Vegetation on backslope protected from river forces allowing for great growth VEGETATED TRENCH-FILL REVETMENTS-STEPS IN CONSTRUCTION - COMPLETE RIVER SIDE Land Side

  22. VEGETATED TRENCH-FILL REVETMENTS – ALL CONSTRUCTION STEPS River side River side

  23. CASE STUDY:& LAKE ECOSYSTEM RESTORATION EFFORTPROJECT CONSTRUCTED Oct ??, - Nov. ??, 2014

  24. THE BACKSTORY • Since the pipeline protection project is totally off of the pipeline right-of-way, the use of several different shrub & tree bioengineering techniques can be used in conjunction with a continuous low-elevation stone toe protection & a set of redirective Bendway Weirs.

  25. AERIAL PHOTOS

  26. AERIAL PHOTO-Flow x to x. AERIAL PHOTO-Provided by x, Dated x-x-2014

  27. PRE-PROJECT PHOTOSby Dave Derrick Jul. xx, 2014 (One year before construction started)

  28. PRE-PROJECT-Looking US @ . PRE-PROJECT-DEMO PROJ-WALNUT CR.-CLIVE IA.-DERRICK x-x-2014

  29. THE PLAN

  30. THE PLAN

  31. CONSTRUCTION PHOTOSby Dave Derrick Oct. xx, 2014

  32. CONSTRUCTION-Looking US @ . CONSTRUCTION-WHITE RIVER @ XXX. PIX DON GRESS x-xx-2014

  33. This PowerPoint presentation was developed & built by Dave Derrick. Any questions or comments, call my personal cell @ 601-218-7717, or email @ d_derrick@r2d-eng.comEnjoy the information!!

  34. This chair fits me!!!

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