Need for Envelope Material above Draintile

by Robert W. Saulmon, (A.M.ASCE), Res. Hydr. Engr.; USDA, Sidney, MO,

Serial Information: Journal of the Irrigation and Drainage Division, 1971, Vol. 97, Issue 4, Pg. 661-663

Document Type: Journal Paper

Abstract: The effect of removal of half of the envelope on the performance of a drain-tile installation will vary with each drainage situation. Analysis herein is limited to a drainage situation in which the tile line flows less than half full and the upper portion of the envelope remains unsaturated.

Subject Headings: Drainage | Tiles | Unsaturated flow |

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