Synthetic Drain Envelope—Soil Interactions

by Lyman S. Willardson, (M.ASCE), Prof.; Dept. of Agricultural and Irrigation Engrg., Utah State Univ., Logan, Utah,
Robert E. Walker, Agricultural Engr.; J.W. Patterson & Associates, Denver, Colo.,

Serial Information: Journal of the Irrigation and Drainage Division, 1979, Vol. 105, Issue 4, Pg. 367-373

Document Type: Journal Paper


Synthetic drain envelope materials currently available commercially have been found to be equally effective as drain envelopes. The materials function primarily as mechanical support for the soil-drain opening interface. Soils have a limited characteristic resistance to internal hydraulic gradients. Flows causing gradients in excess of the hydraulic failure gradient of the particular soil will result in failure of the soil structural skeleton and the drain envelope.

Subject Headings: Drainage | Building envelope | Hydraulic gradients | Failure analysis | Structural failures | Material failures | Synthetic materials | Material mechanics

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