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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
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: 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
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: Robert A. Francis Publisher: Routledge ISBN: 9780815378716 Category : Languages : en Pages : 456
Book Description
Invasive non-native species are a major threat to global biodiversity. Often introduced accidentally through international travel or trade, they invade and colonize new habitats, often with devastating consequences for the local flora and fauna. Their environmental impacts can range from damage to resource production (e.g. agriculture and forestry) and infrastructure (e.g. buildings, road and water supply), to human health. They consequently can have major economic impacts. It is a priority to prevent their introduction and spread, as well as to control them. Freshwater ecosystems are particularly at risk from invasions and are landscape corridors that facilitate the spread of invasives. This book reviews the current state of knowledge of the most notable global invasive freshwater species or groups, based on their severity of economic impact, geographic distribution outside of their native range, extent of research, and recognition of the ecological severity of the impact of the species by the IUCN. As well as some of the very well-known species, the book also covers some invasives that are emerging as serious threats. Examples covered include a range of aquatic and riparian plants, insects, molluscs, crustacea, fish, amphibians, reptiles and mammals, as well as some major pathogens of aquatic organisms. The book also includes overview chapters synthesizing the ecological impact of invasive species in fresh water and summarizing practical implications for the management of rivers and other freshwater habitats.
Author: Avijit Gupta Publisher: John Wiley & Sons ISBN: 9780470723715 Category : Science Languages : en Pages : 712
Book Description
Large Rivers: Geomorphology and Management explores an important topic in geomorphology and sedimentology: the form and function of major rivers. Our knowledge of the big rivers of the world is limited. It is currently difficult to recognise large rivers of the past from relict sedimentary deposits or to structure management policies for long international rivers. This exciting book brings together a set of papers on large rivers of the world, as a unique introduction to a demanding subject. The book includes thirty chapters and is organised into three sections. The first part is on the environmental requirements for creating and maintaining a major river system. The second is a collection of case studies on 14 large rivers from different continents, covering a range of physical environments. The third section includes chapters on the measurement and management of large rivers. First book to offer in a single volume state-of-the-art knowledge on management and geomorphology of large rivers of the world A pioneering study, pushing the boundaries of our knowledge related to big rivers Includes comprehensive case studies covering the major large rivers of the world including Amazon, Mississippi, Nile, Congo, Indus, and Mekong Written by a leading team of distinguished, international contributors Large Rivers: Geomorphology and Management is essential reading for postgraduate students and researchers in fluvial geomorphology, hydrology, sedimentary geology, and river management. It is also of relevance to engineers and environmental consultants in the private and public sectors working on major rivers of the world.
Author: John C. Lonnquest Publisher: ISBN: 9780976149453 Category : Languages : en Pages : 0
Book Description
The Department of Defense's official history of the United States Cold War missile program--completely reformatted with all-new color illustrations and photographs not used in the original edition. The DoD commissioned this study as part of its Cold War Project in 1996. With permission from the DoD's Legacy Program, Hole in the Head Press brings To Defend and Deter back into print. This informative guide offers a thorough look at Cold War missile development, from the earliest beginnings of rocketry in the 13th century to the arms control agreements that began in the 1970s. Both a narrative history and reference guide, To Defend and Deter traces the evolution of the Cold War and establishes the United States missile program's scope and its massive impact on the American landscape, citizens, and structure of the U.S. military establishment.
Author: James E. McDonald
Author: James E. McDonald
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Author: Robert A. Francis
Author: Arthur Coleman Monahan
Author: Avijit Gupta
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Author: George Washington Kingsbury
Author: John C. Lonnquest
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