Heavy duty coir coconut mesh blanket left in the sun for five years. It is still functioning as soil cover but has no strength left and is easy to pull apart.
June 22, 2020
September 27, 2020
Erosion Control Photos
All photos may be used for teaching and training purposes with attribution to: David Jenkins, sheetflow.com
Photos may not be used for commercial purposes without prior express permission from David Jenkins, sheetflow.com
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September 8, 2020
Biodegradable Wattles
I wrote this biodegradable wattles specification for a riverbank habitat restoration project.
I wrote the last three sentences for this particular project, which has a 2:1 slope above an intertidal river. We will place 12 inches of compost before installing native plants this winter; without the wattles, wet compost will slide to the base of the slope.
BIODEGRADABLE WATTLES
- Wattles shall consist of 100% biodegradable straw, coir, excelsior or compost encased in 100% biodegradable fabric or mesh.
- Wattles shall be a minimum of 8 inches in diameter free of cuts tears and damage.
- The installation of straw wattles shall be per WSDOT Standard Plan I-30.30-00 “Wattle Installation on Slope”.
- Wattles shall be staked in place using wooden stakes a minimum of 16 inches long. The stakes shall be cut flush with the top of the wattles.
- Wattles shall be installed on the Site 25 slope above +12 elevation.
- Wattles shall be installed in two rows across the slope parallel to the 12 + elevation.
- Rows shall be approximately 7 feet above the +12 elevation and 7 feet below the top of the slope.
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December 24, 2019
Shortening Slope Length
In this video, I discuss shortening slope length with coir logs installation methods.
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