Design and construction in existing contexts is becoming increasingly important, and often the structures - sometimes of historical interest - can be preserved easily and at minimum cost by employing strengthening measures. Existing concrete members can be strengthened by using adhesives to bond additional reinforcing elements onto or into those members. This book explains the design rules, together with their background, and uses examples to illustrate their use, specifically for slabs, beams and columns. Concrete member strengthening measures can take the form of, for example, flexural strengthening with externally bonded (surface-mounted) CFRP strips, CF sheets and steel plates, flexural strengthening with CFRP strips bonded in slits (near-surface-mounted reinforcement), shear strengthening with externally bonded CF sheets and steel plates, and column strengthening with CF sheets as confining reinforcement. The explanations and background information provided are mainly based on the new German guideline "Strengthening of Concrete Members with Adhesively Bonded Reinforcement" by the German Committee for Structural Concrete (DAfStb). This is the first European guideline to regulate this topic in the form of a supplement to the Eurocode. As it is planned to produce a document in a future Eurocode 2, the DAfStb guideline serves as a starting point. The authors are extensively involved in the planning, design, operation and inspection of buildings for preservation and reconstruction, and in the updating of European Technical Approval Guidelines (ETAGs) and design rules. Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since.
Design and construction in existing contexts is becoming increasingly important, and often the structures - sometimes of historical interest - can be preserved easily and at minimum cost by employing strengthening measures. Existing concrete members can be strengthened by using adhesives to bond additional reinforcing elements onto or into those members. This book explains the design rules, together with their background, and uses examples to illustrate their use, specifically for slabs, beams and columns. Concrete member strengthening measures can take the form of, for example, flexural strengthening with externally bonded (surface-mounted) CFRP strips, CF sheets and steel plates, flexural strengthening with CFRP strips bonded in slits (near-surface-mounted reinforcement), shear strengthening with externally bonded CF sheets and steel plates, and column strengthening with CF sheets as confining reinforcement. The explanations and background information provided are mainly based on the new German guideline "Strengthening of Concrete Members with Adhesively Bonded Reinforcement" by the German Committee for Structural Concrete (DAfStb). This is the first European guideline to regulate this topic in the form of a supplement to the Eurocode. As it is planned to produce a document in a future Eurocode 2, the DAfStb guideline serves as a starting point. The authors are extensively involved in the planning, design, operation and inspection of buildings for preservation and reconstruction, and in the updating of European Technical Approval Guidelines (ETAGs) and design rules. Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since.
The twenty essays that comprise this book, which was first published in 1994, were written by leading paremiologists and folklorists from Africa, Canada, Great Britain, Germany and the US. They represent the best scholarship on proverbs in the English language, and together they give an impressive overview of the fascinating advances in the field of paremiology.
During the twelve years from 1933 until 1945, the concentration camp operated as a terror society. In this pioneering book, the renowned German sociologist Wolfgang Sofsky looks at the concentration camp from the inside as a laboratory of cruelty and a system of absolute power built on extreme violence, starvation, "terror labor," and the business-like extermination of human beings. Based on historical documents and the reports of survivors, the book details how the resistance of prisoners was broken down. Arbitrary terror and routine violence destroyed personal identity and social solidarity, disrupted the very ideas of time and space, perverted human work into torture, and unleashed innumerable atrocities. As a result, daily life was reduced to a permanent struggle for survival, even as the meaning of self-preservation was extinguished. Sofsky takes us from the searing, unforgettable image of the Muselmann--Auschwitz jargon for the "walking dead"--to chronicles of epidemics, terror punishments, selections, and torture. The society of the camp was dominated by the S.S. and a system of graduated and forced collaboration which turned selected victims into accomplices of terror. Sofsky shows that the S.S. was not a rigid bureaucracy, but a system with ample room for autonomy. The S.S. demanded individual initiative of its members. Consequently, although they were not required to torment or murder prisoners, officers and guards often exploited their freedom to do so--in passing or on a whim, with cause, or without. The order of terror described by Sofsky culminated in the organized murder of millions of European Jews and Gypsies in the death-factories of Auschwitz and Treblinka. By the end of this book, Sofsky shows that the German concentration camp system cannot be seen as a temporary lapse into barbarism. Instead, it must be conceived as a product of modern civilization, where institutionalized, state-run human cruelty became possible with or without the mobilizing feelings of hatred.
A biography of the man who lead the secret mission to kill Adolph Hitler and topple the Nazi regime, from an award-winning historian. On 20th July 1944, senior officers gathered at the Wolfschanze—the Wolf’s Lair—Hitler’s headquarters in East Prussia. Among them was Colonel Claus Schenk Count von Stauffenberg, chief of staff of the Reserve Army, and he carried a briefcase packed with explosives. This is his story. Shortly after midday the building was rocked by a massive explosion. Five men were killed, others wounded and the interior of the Wolfschanze was wrecked. Believing that he had killed the German Führer, von Stauffenberg set off for Berlin to initiate Operation Valkyrie—the coup d’etat to overthrow the Nazi regime. Hitler, of course, did not die that day and Stauffenberg and his coconspirators were rounded up and executed. But what motivated Stauffenberg to attempt such a mission? Was Stauffenberg a traitor or a patriot? After decades of analyzing the sources and eyewitness reports, the renowned historian Wolfgang Venohr revealed the true nature of the man behind the most audacious assassination attempt of the Second World War. Like many others, Stauffenberg smarted from Germany’s humiliating defeat in 1918 and the punishing terms of the Treaty of Versailles. Indeed, until the late 1930s, Stauffenberg agreed with much of the National Socialist ideology, which sought to reestablish Germany as the most powerful nation in Europe. But, increasingly, he saw his country sliding to defeat yet again at the hands of a leader who has lost his grip on reality. Stauffenberg believed he had no choice but to act . . .
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