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Concepts for Installation of the Precast Concrete Stay-in-Place Forming System for Lock Wall Rehabilitation in an Operational Lock

Description: Report describing a study to extend the application of a method to rehabilitate damaged lock walls that uses a stay-in-place forming system. "During this study, operational and design criteria were developed to serve as the basis for design. A number of repair concepts were identified that satisfied the criteria" (abstract, para. 3).
Date: December 1989
Creator: Waterways Experiment Station (U.S.)
Partner: UNT Libraries Government Documents Department

Comparison of Cast-in-Place Concrete Versus Precast Concrete Stay-in-Place Forming Systems for Lock Wall Rehabilitation

Description: "The objectives of this report are as follows: (a) To present the design and details utilized on the precast concrete panel rehabilitation at Troy Lock. (b) To compare the results of precast concrete panel rehabilitation with previous cast-in-place repairs, with respect to quality, cost, and schedule. (c) To recommend refinements in the details and methods of fabrication and erection of the precast panels, based on lessons learned from work performed at Troy Lock." (p. 2).
Date: October 1993
Creator: Miles, William R.
Partner: UNT Libraries Government Documents Department

Repair of Waterstop Failures: Case Histories

Description: This report discusses case studies of failures in waterstops that prevent water passage through the monolith joints of concrete dams and locks. "The primary objective of this study was to identify materials and techniques which have been used in repair of waterstop failures. Also, based on a review and evaluation of current practices, a secondary objective was to identify those areas where research is needed to supplement existing technology" (abstract).
Date: November 1986
Creator: McDonald, J. E.
Partner: UNT Libraries Government Documents Department

Levee Underseepage Analysis for Special Foundation Conditions [Floppy Disk]

Description: Computer program developed to predict underseepage conditions for special cases of levee and foundation geometry. The differential equations for levee underseepage were derived and programmed in finite difference form for three special cases of boundary conditions. The developed programs allow analyses that are not restricted to the boundary conditions assumed in the conventional, closed form solution, i.e., two foundation layers of uniform thickness with horizontal boundaries.
Date: September 1989
Creator: Wolff, Thomas F.
Partner: UNT Libraries Government Documents Department

Levee Underseepage Analysis for Special Foundation Conditions

Description: This report describes a research study in which techniques were developed for prediction of underseepage conditions for special cases of levee and foundation geometry. The differential equations for levee underseepage were derived and programmed in finite difference form for three special cases of boundary conditions. The developed programs allow analyses that are not restricted to the boundary conditions assumed in the conventional, closed form solution, i.e., two foundation layers of uniform thickness with horizontal boundaries.
Date: September 1989
Creator: Wolff, Thomas F.
Partner: UNT Libraries Government Documents Department

Development of Nondestructive Testing Systems for in situ Evaluation of Concrete Structures

Description: Final report regarding the testing of concrete structures. Partial abstract: "The need for additional capability to nondestructively evaluate concrete in large structures is similar for both the US Army Corps of Engineers (CE) and the US Bureau of Reclamation (USBR). In view of this mutual need, the CE and the USBR entered into a cooperative program of research and development designed to increase the nondestructive testing evaluation capabilities of these two organizations, with each agency sharing the program planning and financial support."
Date: December 1987
Creator: Thornton, Henry T., Jr. & Alexander, A. Michel
Partner: UNT Libraries Government Documents Department

Geotechnical Applications of the Self-Potential Method, Report 3: Development of Self-Potential Interpretation Techniques for Seepage Detection

Description: This report consists of four distinct but complementary parts: (a) a laboratory/field study of environmental effects on self-potential (SP) electrodes and long-term stability of the electrodes; (b) field investigations at Beaver Dam, Arkansas; (c) development of a computer program for interpretation of seepage-related SP field survey data; (d) development of an extensive bibliography and data base for acquisition and interpretation of seepage-related SP data.
Date: February 1989
Creator: Corwin, Robert W. & Butler, Dwain K.
Partner: UNT Libraries Government Documents Department

Geotechnical Aspects of Rock Erosion in Emergency Spillway Channels, Report 1

Description: "The problem of rock erosion in unlined emergency spillway channels is described in this first-of-a series report. Recent CE and non-CE case histories which illustrate the potentially hazardous impacts of excessive erosion in discharge channels are described as are the various factors controlling erosion and other responses to emergency spillway overflow. Research programs designed to improve geotechnical capabilities with respect to selection of cost-effective preventive and remedial measures in discharge channels where the risk of excessive erosion appears high are also discussed" (abstract, para. 1).
Date: August 1986
Creator: Cameron, Christopher P.; Cato, Kerry Don; McAneny, Colin C. & May, James H.
Partner: UNT Libraries Government Documents Department

Monolith Joint Repairs: Case Histories

Description: This report discusses a study to identify materials and techniques to repair monolith joints, a common location for deficiencies in dams and locks. It also identified areas for further investigation to supplement existing technologies.
Date: August 1989
Creator: May, James G. & McDonald, J. E.
Partner: UNT Libraries Government Documents Department

Levee Underseepage Software: User Manual and Validation [Floppy Disk]

Description: A FORTRAN 77 computer program (LEVSEEP), developed to analyze levee underseepage on IBM PC compatible microcomputers with an 8087 math coprocessor. The software and associated equipment plots cross sections and piezometer data; calculates seepage flow and substratum pressure; analyzes landside berm, river side blanket, cutoff and relief well control measures; and finally, estimates the construction cost of these alternatives.
Date: September 1989
Creator: Cunny, Robert W.; Agostinelli, Victor M., Jr. & Taylor, Hugh M., Jr.
Partner: UNT Libraries Government Documents Department

Levee Underseepage Software: User Manual and Validation

Description: Report discussing the FORTRAN 77 computer program (LEVSEEP), developed to analyze levee underseepage on IBM PC compatible microcomputers with an 8087 math coprocessor. The software and associated equipment plots cross sections and piezometer data; calculates seepage flow and substratum pressure; analyzes landside berm, river side blanket, cutoff and relief well control measures; and finally, estimates the construction cost of these alternatives.
Date: September 1989
Creator: Cunny, Robert W.; Agostinelli, Victor M., Jr. & Taylor, Hugh M., Jr.
Partner: UNT Libraries Government Documents Department