Research Article
Mar 1963
Kariba Left Bank Cofferdam
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VIEW THE REPLYPublication: Journal of the Construction Division
Volume 89, Issue 1
Abstract
The left bank cofferdam used in building Kariba Dam was an arch of unconventional design. It was a vertical semi-circular wall 960 ft long and 60 ft high, giving a length-to-height ratio of 16, an unprecedented value. Its behavior, as observed and measured by strain meters, was excellent, despite the fact that it was submerged by a high flood. The structure is set in the context of other, earlier structures with high L/H ratios, and the subject of arch dam computations is broached, in general, with particular reference to the trial load method. The river was subsequently diverted through two wide breaches created by a single blast. This cofferdam affords a precedent that could even be used for permanent structures on future sites, where the valley width has hitherto precluded the idea of an arch dam. The concrete volume accounted for only 12% of the equivalent gravity dam. Regardless of economic considerations, this factor alone made it possible at Kariba to fulfill an exceptionally tight working schedule.
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Published In
Journal of the Construction Division
Volume 89 • Issue 1 • March 1963
Pages: 33 - 54
Copyright
© 1963 American Society of Civil Engineers.
History
Published in print: Mar 1963
Published online: Feb 11, 2021
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Authors
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Jean J. Martin, M.ASCE
Pres., Coyne & Bellier, Bur. of Engrs., Coseilis, Paris, France
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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.
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