Repair and Rehabilitation of Dams

Repair and Rehabilitation of Dams

Author: James E. McDonald

Publisher: Washington, D.C. : U.S. Army Corps of Engineers, Engineer Research and Development Center

Published: 1999

Total Pages: 272

ISBN-13:

DOWNLOAD EBOOK

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.


Heavy Ground

Heavy Ground

Author: Norris Hundley

Publisher: Univ of California Press

Published: 2016-01-26

Total Pages: 450

ISBN-13: 0520287665

DOWNLOAD EBOOK

Minutes beforeÊmidnightÊon March 12, 1928, the St. Francis Dam collapsed, sending more than 12 billion gallons of water surging through CaliforniaÕs Santa Clara Valley and killing some 400 people, causing the greatest civil engineering disaster in twentieth-century American history. This extensively illustrated volume gives an account of how the St. Francis Dam came to be built, the reasons for its collapse, the terror and heartbreak brought by the flood, the efforts to restore the Santa Clara Valley, the political factors influencing investigations of the failure, and the effect of the disaster on dam safety regulation. Underlying all is a consideration of how the damÑand the disasterÑwere inextricably intertwined with the life and career of William Mulholland.Ê


The Use of Force in UN Peace Operations

The Use of Force in UN Peace Operations

Author: Trevor Findlay

Publisher: Oxford University Press on Demand

Published: 2002

Total Pages: 486

ISBN-13: 9780198292821

DOWNLOAD EBOOK

One of the most vexing issues that has faced the international community since the end of the Cold War has been the use of force by the United Nations peacekeeping forces. UN intervention in civil wars, as in Somalia, Bosnia and Herzegovina, and Rwanda, has thrown into stark relief the difficulty of peacekeepers operating in situations where consent to their presence and activities is fragile or incomplete and where there is little peace to keep. Complex questions arise in these circumstances. When and how should peacekeepers use force to protect themselves, to protect their mission, or, most troublingly, to ensure compliance by recalcitrant parties with peace accords? Is a peace enforcement role for peacekeepers possible or is this simply war by another name? Is there a grey zone between peacekeeping and peace enforcement? Trevor Findlay reveals the history of the use of force by UN peacekeepers from Sinai in the 1950s to Haiti in the 1990s. He untangles the arguments about the use of force in peace operations and sets these within the broader context of military doctrine and practice. Drawing on these insights the author examines proposals for future conduct of UN operations, including the formulation of UN peacekeeping doctrine and the establishment of a UN rapid reaction force.


Hendrik Petrus Berlage

Hendrik Petrus Berlage

Author: Hendrik Petrus Berlage

Publisher: Getty Publications

Published: 1996-01-01

Total Pages: 350

ISBN-13: 0892363339

DOWNLOAD EBOOK

Hendrik Petrus Berlage, the Dutch architect and architectural philosopher, created a series of buildings and a body of writings from 1886 to 1909 that were among the first efforts to probe the problems and possibilities of modernism. Although his Amsterdam Stock Exchange, with its rational mastery of materials and space, has long been celebrated for its seminal influence on the architecture of the 20th century, Berlage's writings are highlighted here. Bringing together Berlage's most important texts, among them "Thoughts on Style in Architecture", "Architecture's Place in Modern Aesthetics", and "Art and Society", this volume presents a chapter in the history of European modernism. In his introduction, Iain Boyd Whyte demonstrates that the substantial contribution of Berlage's designs to modern architecture cannot be fully appreciated without an understanding of the aesthetic principles first laid out in his writings.


Defending Air Bases in an Age of Insurgency

Defending Air Bases in an Age of Insurgency

Author: Shannon Caudill

Publisher: Military Bookshop

Published: 2014-08

Total Pages: 444

ISBN-13: 9781782666851

DOWNLOAD EBOOK

This anthology discusses the converging operational issues of air base defense and counterinsurgency. It explores the diverse challenges associated with defending air assets and joint personnel in a counterinsurgency environment. The authors are primarily Air Force officers from security forces, intelligence, and the office of special investigations, but works are included from a US Air Force pilot and a Canadian air force officer. The authors examine lessons from Vietnam, Iraq, Afghanistan, and other conflicts as they relate to securing air bases and sustaining air operations in a high-threat counterinsurgency environment. The essays review the capabilities, doctrine, tactics, and training needed in base defense operations and recommend ways in which to build a strong, synchronized ground defense partnership with joint and combined forces. The authors offer recommendations on the development of combat leaders with the depth of knowledge, tactical and operational skill sets, and counterinsurgency mind set necessary to be effective in the modern asymmetric battlefield.


Facing the Heat Barrier

Facing the Heat Barrier

Author: T.A. Heppenheimer

Publisher: Courier Dover Publications

Published: 2018-09-12

Total Pages: 355

ISBN-13: 0486834514

DOWNLOAD EBOOK

This volume from The NASA History Series presents an overview of the science of hypersonics, the study of flight at speeds at which the physics of flows is dominated by aerodynamic heating. The survey begins during the years immediately following World War II, with the first steps in hypersonic research: the development of missile nose cones and the X-15; the earliest concepts of hypersonic propulsion; and the origin of the scramjet engine. Next, it addresses the re-entry problem, which came to the forefront during the mid-1950s, showing how work in this area supported the manned space program and contributed to the development of the orbital shuttle. Subsequent chapters explore the fading of scramjet studies and the rise of the National Aerospace Plane (NASP) program of 1985–95, which sought to lay groundwork for single-stage vehicles. The program's ultimate shortcomings — in terms of aerodynamics, propulsion, and materials — are discussed, and the book concludes with a look at hypersonics in the post-NASP era, including the development of the X-33 and X-34 launch vehicles, further uses for scramjets, and advances in fluid mechanics. Clearly, ongoing research in hypersonics has yet to reach its full potential, and readers with an interest in aeronautics and astronautics will find this book a fascinating exploration of the field's history and future.


Energy Dissipation in Hydraulic Structures

Energy Dissipation in Hydraulic Structures

Author: Hubert Chanson

Publisher: CRC Press

Published: 2015-05-12

Total Pages: 178

ISBN-13: 1315680297

DOWNLOAD EBOOK

Recent advances in technology have permitted the construction of large dams, reservoirs and channels. This progress has necessitated the development of new design and construction techniques, particularly with the provision of adequate flood release facilities. Chutes and spillways are designed to spill large water discharges over a hydraulic struc