Effect of Opening on Design of Subsurface Drains

by G. O. Schwab,
D. W. DeBoer,
H. P. Johnson,

Serial Information: Journal of the Irrigation and Drainage Division, 1969, Vol. 95, Issue 1, Pg. 199-212

Document Type: Journal Paper


Theoretical effects of joint spacing on flow into drain tile and effects of perforations are presented in a form useful for the design engineer. The influence of these openings on the rate of water table drawdown between parallel drains is presented. Experimental field data support the theoretical results.

Subject Headings: Subsurface drainage | Drainage | Joints | Spacing | Tiles | Water table | Drawdown (hydrology) | Field tests

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