Research Article
Sep 1979
Drip Irrigation Design on Nonuniform Slopes
Authors: I-Pai Wu, M.ASCE, and Harris M. GitlinAuthor Affiliations
Publication: Journal of the Irrigation and Drainage Division
Volume 105, Issue 3
Abstract
The pressure variation along a lateral line can be determined by a linear combination of energy drop by friction and energy gain (or loss) by either uniform or non-uniform slopes. Design charts were developed from computer simulation for five non-uniform slope patterns. In Pattern I situation where the non-uniform slope has a general shape similar to the energy gradient curve, the average slope can be used in the design. A single dimensionless design chart for non-uniform slope situations was developed; it can be used for all non-uniform situations and for both British and metric units. The application of Poly-plot was examined and further expansion of the concept of Poly-plot led to the development of the Isograph that can be used for both uniform and non-uniform slope situations. When a lateral line is relatively long it can be divided into several sections in which varying sizes can be designed for each section.
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Published In
Journal of the Irrigation and Drainage Division
Volume 105 • Issue 3 • September 1979
Pages: 289 - 303
Copyright
© 1979 American Society of Civil Engineers.
History
Published in print: Sep 1979
Published online: Feb 11, 2021
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Authors
Affiliations
I-Pai Wu, M.ASCE
Prof. of Agricultural Engrg., Univ. of Hawaii, Honolulu, Hawaii
Harris M. Gitlin
Extension Specialist in Agricultural Engrg., Univ. of Hawaii, Honolulu, Hawaii
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.