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20:53 Feb 16, 2018
English to Spanish translations [PRO] Tech/Engineering - Geology / Control de la erosión
English term or phrase:keyed-in
Silt Fence Installation Guidelines
Layout the fence line parallel to contour. Silt fences should be at least three feet from the toe of a slope.
Dig a trench 12 inches to 24 inches wide and 12 inches deep.
Bottom of the fence shall be keyed-in a minimum of 12 inches; the bottom 12 inch should be placed in the trench in an “L” shape with a six inch horizontal flap and a six inch vertical rise.
The last eight feet to 10 feet of the fence should be turned up slope at 45 degrees.
Stakes shall be spaced at a maximum of eight feet and be positioned on the downslope side of the fence.
The key is a slit made into the bank, twigs or a dam of plastic is anchored into the slit and the the slit is packed with material to keep the dam in place, sort of like setting an old fashioned canvas dam in a ditch by forcing the canvas into the mud with an irrigation shovel