PRACTICAL LAND GRADING BASED ON LEAST SQUARES.

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Data

1986-05-01

Autores

Scaloppi, Edmar José [UNESP]
Willardson, Lyman S. [UNESP]

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Resumo

Practical methods for land grading design of a plane surface for rectangular and irregularly shaped fields based on a least squares analysis are presented. The least squares procedure leads to a system of three linear equations with three unknowns for determination of the best-fit plane. The equations can be solved by determinants (Cramer's rule) using a procedure capable of solution by many programmable calculators. The detailed computational process for determining the equation of the plane and a simple method to find the centroid location of an irregular field are also given. An illustrative example and design instructions are included to demonstrate the application of the design procedure.

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Palavras-chave

DRAINAGE, IRRIGATION, MATHEMATICAL MODELS, SOILS, LAND GRADING, AGRICULTURAL ENGINEERING

Como citar

Journal of Irrigation and Drainage Engineering, v. 112, n. 2, p. 98-109, 1986.