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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1068
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1068
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Book Description
Author: Louis J. Shows
Publisher:
ISBN:
Category : Barrages
Languages : en
Pages : 42
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Book Description
This study is concerned with navigation conditions in the upper approach to a temporary 110- by 1200-ft lock under construction at the existing Lock and Dam 53 on the Ohio River. It became apparent during construction that the intensity of the crosscurrents in the approach to the existing lock would be increased with the temporary lock making navigation conditions extremely difficult and hazardous. The study was undertaken to determine the conditions that would develop with the structure as planned and to develop modifications required to provide satisfactory navigation. In order to provide results before construction was completed on the original plan, a semifixed-bed model utilizing existing facilities was used for the study. The model reproduced to an undistorted scale of 1:120 the dam, upper portions of the locks, and about 2 miles of the river upstream. Results of the investigation indicated the hazardous condition that could be expected with the structures as planned. Satisfactory navigation conditions could be developed with the temporary lock by extending the upper guard wall and providing sufficient ports in the wall to pass most of the flow intercepted by the wall. (Author).
Author: James E. McDonald
Publisher: Washington, D.C. : U.S. Army Corps of Engineers, Engineer Research and Development Center
ISBN:
Category : Arch dams Maintenance repair Case studies
Languages : en
Pages : 272
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Book Description
This study was conducted to identify methods that have been used in the repair and rehabilitation of concrete dams. Information was obtained through literary searches, discussions with project personnel, and visits to project sites. Each case history includes a background of the project, the deficiency that necessitated repair or rehabilitation, and descriptions of materials and methods used in the repair or rehabilitation. When available, the cost of the repair project and the performance of the repair to date have been included. Case histories included in this report cover a range of deficiencies in concrete structures, including cracking, spalling, erosion, leakage, inadequate PMF capacity, expansion resulting from alkali-aggregate reaction, instability, and insufficient storage capacity.
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 56
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Book Description
Author: Louis J. Shows
Publisher:
ISBN:
Category : Dams
Languages : en
Pages : 44
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Book Description
Author: Saul Edward Rantz
Publisher:
ISBN:
Category : Stream measurements
Languages : en
Pages : 326
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Book Description
Author: United States. Army. Office of the Chief of Engineers
Publisher:
ISBN:
Category : Channels (Hydraulic engineering)
Languages : en
Pages : 134
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Book Description
The purpose of this manual is to provide guidance for planning, layout and design of shallow-draft waterways.
Author: Henry Lewis
Publisher: St. Paul : Minnesota Historical Society
ISBN:
Category : Social Science
Languages : en
Pages : 616
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Book Description
Author: Leland R. Johnson
Publisher:
ISBN:
Category :
Languages : en
Pages : 396
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Book Description
Author: Jane McGonigal
Publisher: Penguin
ISBN: 1101475498
Category : Psychology
Languages : en
Pages : 334
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Book Description
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