Erosion and Sediment Control Tip #59

 

Research at the Auburn Stormwater Research Facility has found that a lot of the under-mining type failures of a silt fence are initiated around the post.  The new recommended off-set installation eliminates this issue when installed properly. By offsetting the post 6 in. downstream of the trench allows for the post to be inserted into undisturbed ground.  It also allows for better compaction of soil on the silt fence geotextile when filling the trench.

 

Perry L Oakes, PE

Erosion and Sediment Control Program Coordinator

AL Soil and Water Conservation Committee

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