Civil · C-Q3FKB

Slicing

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Temporary silt fence sediment control installations utilize either a slicing method or a trenching method. Steel T or U type posts or four-inch hardwood posts are driven a minimum of twenty-four inches into the ground with a total minimum length of forty-eight inches, spaced at a maximum of eight feet on center. A woven wire fence with fourteen and a half gauge wire and a maximum six-inch mesh opening is fastened securely to the fence posts using wire ties or staples. Filter cloth, such as Filter X or Mirafi 100X, is attached securely to the fence with ties spaced at twenty-four inches at the top and midsection, maintaining a minimum two-foot height above grade. For the slicing method, the fabric extends a minimum depth of eight inches below grade. For the trenching method, the fabric material is placed in a six-inch by six-inch trench with an L-shaped dogleg before backfilling and compacting the soil. Fabric is overlapped by six inches, and posts are located on the down slope of the fabric for support.

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