Transcription of The Basicsof Agricultural Tile Drainage
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The Basicsof Agricultural Tile Drainage
The Basicsof Agricultural Tile DrainageBasic Engineering Principals 2 John Panuska PhD, PENatural Resources Extension SpecialistBiological Systems Engineering DepartmentUW MadisonASABE Tile Drain StandardsASAE EP480 MAR1998(R2008)Design of subsurface Drains in Humid ClimatesDesign StandardASABE Tile Drain StandardsConstruction StandardASAE EP481 FEB03 Construction of subsurface Drains in Humid AreasDrain Design if and where an adequate outlet can be installed! hydraulic conductivity (K) based on soil Drainage coefficient (Dc) based on crop and soil suitable depth for drains oTypical range 3 to 6 greater than ftoDepth / spacing balance to minimize spacingoUse soil textural table guidelinesoUse NRCS Web Design laterals and mains to accommodate the design flow.
Varies with soil permeability, crop and soil, kind of management practices crop, extent of surface drainage. Typical drain depth range = 3 to 6 ft. Typical spacing = 30 to 100 ft. Depth / spacing balance to minimize cost. Minimum cover greater than 2.5 ft.
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