Research Article
Mar 1971
Steady Drainage of Layered Soils: II. Nomographs
Authors: Sadik Toksöz and Don KirkhamAuthor Affiliations
Publication: Journal of the Irrigation and Drainage Division
Volume 97, Issue 1
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.
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Published In
Journal of the Irrigation and Drainage Division
Volume 97 • Issue 1 • March 1971
Pages: 19 - 37
Copyright
© 1971 American Society of Civil Engineers.
History
Published in print: Mar 1971
Published online: Feb 11, 2021
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Authors
Affiliations
Sadik Toksöz
Regional Planner, Acres lnternat. (Overseas) Ltd., Niagara Falls, Canada and Dacca, East Pakistan; formerly Research Assoc., and Administrative Asst. to Dir. of Iowa State Water Resources Research Inst., Iowa State Univ. of Science and Technology, Ames, Iowa.
Don Kirkham
Prof. of Soils and Physics (Curtiss Distinguished Prof. of Agr.) and Dir., Iowa State Water Resources Research Inst., Iowa State Univ. of Science and Technology, Ames, Iowa.
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