Research Article
Jan 1948
Friction Coefficients in a Large Tunnel
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VIEW THE REPLYPublication: Transactions of the American Society of Civil Engineers
Volume 113, Issue 1
Abstract
Measurements made to determine friction and roughness coefficients for three different surfaces in the Apalachia Tunnel of the Tennessee Valley Authority are described in this paper. The sections tested were an 18-ft steel pipe coated with bituminous paint, an 18-ft concrete-lined tunnel, and an unlined rock tunnel of 20-ft and 22-ft nominal diameters. Discharges during the tests varied from 975 to 3,210 cu ft per sec. Methods of reducing the data are described and the results are presented in terms of f and n in the Weisbach and Manning equations, respectively. Also, the surfaces are described in detail and illustrated so that their respective friction and roughness coefficients may be applied to other similar surfaces.
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Published In
Transactions of the American Society of Civil Engineers
Volume 113 • Issue 1 • January 1948
Pages: 1027 - 1046
Copyright
© 1948 American Society of Civil Engineers.
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Published in print: Jan 1948
Published online: Feb 10, 2021
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Authors
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G. H. Hickox, M.ASCE
Senior Hydr. Engr., TVA Hydr. Laboratory, Norris, Tenn.
A. J. Peterka, AM.ASCE
Hydr. Engr. Hydr. Laboratory, Bureau of Reclamation, Denver, Colo.
R. A. Elder, J.ASCE
Associate Hydr. Engr., TVA Hydr. Laboratory, Norris, Tenn.
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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.