Design of Irrigation Pipe Laterals with Multiple Outletsby Roland P. Perold, Chf. Engr.; Dept. of Agr. Technical Services, Div. of Agr. Engrg., Stellenbosch, Republic of South Africa,
Serial Information: Journal of the Irrigation and Drainage Division, 1977, Vol. 103, Issue 2, Pg. 179-195
Document Type: Journal Paper
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Design criteria for multiple outlet irrigation pipe laterals are examined and the mean deviation is recommended as the criterion. The problem of the design of sloping pipe laterals (constant diameter) can be solved precisely by computing a series of dimensionless solutions and calculating the mean deviation in each case, as well as the design parameters, which state the relation between frictional losses and gradient differences respectively, to the design outlet pressure. A design chart is presented from which the permissible number of outlets for a given value of mean deviation can be read, or from which the design friction parameter can be read for a given number of outlets so that the pipe diameter can be found.
Subject Headings: Irrigation | Pipelines | Hydraulic design | Parameters (statistics) | Friction | Pressure pipes | Lateral pressure | Slopes
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