Steady Drainage of Layered Soils: II, Nomographs

by Sadik Toksöz, Regional Planner; Acres Int. (Overseas) Ltd., Niagara Falls, Canada and Dacca, East Pakistan; formerly, Res. Assoc., and Admin. Asst. to Dir. of Iowa State Water Resources Res. Inst., Iowa State Univ. of Sci. and Technol., Ames, IO,
Don Kirkham, Prof. of Soils and Physics (Curtis Distinguished Prof. of Agr.) and Dir.; Iowa State Water Resources Res. Inst., Iowa State Univ. of Sci. and Technol., Ames, IO,


Serial Information: Journal of the Irrigation and Drainage Division, 1971, Vol. 97, Issue 1, Pg. 19-37


Document Type: Journal Paper

Abstract: This is the second of two papers on steady drainage of layered soils. In the first paper, the theory was developed; in this paper, the drain spacing equations for the two-layered and three-layered soils have been given. A set of 16 figures, containing 29 nomographs have been prepared for easy calculation of drain spacings in two-layered soils. Drain spacings calculated by using Dagan's equation for the two-layered soils agree well with the spacings calculated from the nomographs in this paper.

Subject Headings: Layered soils | Drainage | Spacing

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