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.
This history explores the story of federal contributions to dam planning, design, and construction by carefully selecting those dams and river systems that seem particularly critical to the story. The history also addresses some of the negative environmental consequences of dam-building, a series of problems that today both Reclamation and the U.S. Army Corps of Engineers seek to resolve.
Force Structure, Tactics, and Modernization of the Russian Ground Forces The mighty Soviet Army is no more. The feckless Russian Army that stumbled into Chechnya is no more. Today's Russian Army is modern, better manned, better equipped and designed for maneuver combat under nuclear-threatened conditions. This is your source for the tactics, equipment, force structure and theoretical underpinnings of a major Eurasian power. Here's what the experts are saying: "A superb baseline study for understanding how and why the modern Russian Army functions as it does. Essential for specialist and generalist alike." -Colonel (Ret) David M. Glantz, foremost Western author on the Soviet Union in World War II and Editor of The Journal of Slavic Military Studies. "Congratulations to Les Grau and Chuck Bartles on filling a gap which has yawned steadily wider since the end of the USSR. Their book addresses evolving Russian views on war, including the blurring of its nature and levels, and the consequent Russian approaches to the Ground Forces' force structuring, manning, equipping, and tactics. Confidence is conferred on the validity of their arguments and conclusions by copious footnoting, mostly from an impressive array of primary sources. It is this firm grounding in Russian military writings, coupled with the authors' understanding of war and the Russian way of thinking about it, that imparts such an authoritative tone to this impressive work." -Charles Dick, former Director of the Combat Studies Research Centre, Senior Fellow at the Defence Academy of the United Kingdom, author of the 1991 British Army Field Manual, Volume 2, A Treatise on Soviet Operational Art and author of From Victory to Stalemate The Western Front, Summer 1944 and From Defeat to Victory, The Eastern Front, Summer 1944. "Dr. Lester Grau's and Chuck Bartles' professional research on the Russian Armed Forces is widely read throughout the world and especially in Russia. Russia's Armed Forces have changed much since the large-scale reforms of 2008, which brought the Russian Army to the level of the world's other leading armies. The speed of reform combined with limited information about their core mechanisms represented a difficult challenge to the authors. They have done a great job and created a book which could be called an encyclopedia of the modern armed forces of Russia. They used their wisdom and talents to explore vital elements of the Russian military machine: the system of recruitment and training, structure of units of different levels, methods and tactics in defense and offence and even such little-known fields as the Arctic forces and the latest Russian combat robotics." -Dr. Vadim Kozyulin, Professor of Military Science and Project Director, Project on Asian Security, Emerging Technologies and Global Security Project PIR Center, Moscow. "Probably the best book on the Russian Armed Forces published in North America during the past ten years. A must read for all analysts and professionals following Russian affairs. A reliable account of the strong and weak aspects of the Russian Army. Provides the first look on what the Russian Ministry of Defense learned from best Western practices and then applied them on Russian soil." -Ruslan Pukhov, Director of the Moscow-based Centre for the Analysis of Strategies and Technologies (CAST) and member of the Public Council of the Russian Federation Ministry of Defense. Author of Brothers Armed: Military Aspects of the Crisis in Ukraine, Russia's New Army, and The Tanks of August.
Pearl Harbor will long stand out in mens minds as an example of the results of basic unpreparedness of a peace loving nation, of highly efficient treacherous surprise attack and of the resulting unification of America into a single tidal wave of purpose to victory. Therefore, all will be interested in this unique narrative by Admiral Wallin. The Navy has long needed a succinct account of the salvage operations at Pearl Harbor that miraculously resurrected what appeared to be a forever shattered fleet. Admiral Wallin agreed to undertake the job. He was exactly the right man for it _ in talent, in perception, and in experience. He had served intimately with Admiral Nimitz and with Admiral Halsey in the South Pacific, has commanded three different Navy Yards, and was a highly successful Chief of the Bureau of Ships. On 7 December 1941 the then Captain Wallin was serving at Pearl Harbor. He witnessed the events of that shattering and unifying "Day of Infamy." His mind began to race at high speeds at once on the problems and means of getting the broken fleet back into service for its giant task. Unless the United States regained control of the sea, even greater disaster loomed. Without victory at sea, tyranny soon would surely rule all Asia and Europe. In a matter of time it would surely rule the Americas. Captain Wallin salvaged most of the broken Pearl Harbor fleet that went on to figure prominently in the United States Navys victory. So the account he masterfully tells covers what he masterfully accomplished. The United States owes him an unpayable debt for this high service among many others in his long career.
The role of storage reservoirs in water resource development is described and estimated on a world wide basis. The physical phenomena related to reservoir situation are described to provide a basic understanding of the problem. Finally, a fairly completed survey is presented of the design and operational strategies that can be used to alleviate reservoir situation are described to provide a basic understanding of the problem.
