TECHNICAL PAPERS
Feb 1, 1988
Adjusted F Factor for Multiple‐Outlet Pipes
Publication: Journal of Irrigation and Drainage Engineering
Volume 114, Issue 1
Abstract
An adjusted F factor to compute pressure head loss in pipes having multiple, equally spaced outlets is derived for any given distance from the first outlet to the beginning of the pipe. The proposed factor is dependent on the number of outlets and is expressed as a function of the Christiansen's F factor. It may be useful to irrigation engineers to estimate friction loss in sprinkle and trickle irrigation laterals and manifolds, as well as gated pipes.
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References
1.
Christiansen, J. E. (1942). “Irrigation by sprinkling.” Calif. Agric. Expt. Sta. Bul. 670, Univ. of California, Davis, Calif.
2.
Chu, S. T. (1978). “Modified F factor for irrigation laterals.” Trans., American Society of Agricultural Engineers, 21(1), 116–118.
3.
Detar, W. R. (1982). “Modified graphical determination of submain size.” Trans., American Society of Agricultural Engineers, 25(3), 695–696.
4.
Jensen, M. C., and Fratini, A. M. (1957). “Adjusted “F” factors for sprinkler lateral design.” Agric. Engrg., 38(4), 247.
5.
Pair, C. H., Hinz, W. W., Reid, C., and Frost, K. R., eds. (1975). Sprinkler irrigation. 4th ed., Sprinkler Irrigation Association, Silver Spring, Md.
Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 114 • Issue 1 • February 1988
Pages: 169 - 174
Copyright
Copyright © 1988 ASCE.
History
Published online: Feb 1, 1988
Published in print: Feb 1988
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Authors
Affiliations
Edmar José Scalopi
Prof., Faculdade de Cie○ncias Agrono○micas‐UNESP, C.P. 237, 18600 Botucatu‐SP, Brazil
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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.