Brief Report
Jul 1968
The Origin of Manning's Formula
Publication: Journal of the Hydraulics Division
Volume 94, Issue 4
Abstract
The formula for the resistance to the flow of water in open channels that Manning recommended in his address to the Institute of Civil Engineers of Ireland on December 4, 1889, is entirely different from the one, bearing his name, so widely used today. This situation has attracted the attention of a number of hydraulic engineers, and led to articles on the subject by at least seven different authors, from Chow in 1955 to the writer in 1962. It is only recently (1967) that information has come to light which seems to complete the curious history.
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Published In
Journal of the Hydraulics Division
Volume 94 • Issue 4 • July 1968
Pages: 1179 - 1181
Copyright
© 1968 American Society of Civil Engineers.
History
Published in print: Jul 1968
Published online: Feb 3, 2021
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Authors
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Ralph W. Powell, F.ASCE
Pres., Rocky Mountain Hydraulic Lab., Allenspark, Colo
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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.