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Despite all the efforts being put into expanding renewable energy sources, large–scale power stations will be essential as part of a reliable energy supply strategy for a longer period. Given that they are low on CO2 emissions, many countries are moving into or expanding nuclear energy to cover their baseload supply. Building structures required for nuclear installations whose protective function means they are classified as safety–related, have to meet particular construction requirements more stringent than those involved in conventional construction. This book gives a comprehensive overview from approval aspects given by nuclear and construction law, with special attention to the interface between plant and construction engineering, to a building structure classification. All life cycle phases are considered, with the primary focus on execution. Accidental actions on structures, the safety concept and design and fastening systems are exposed to a particular treatment. Selected chapters of the German concrete yearbook "Beton–Kalender" are now available in English. The new English BetonKalender Series delivers internationally useful engineering expertise and industrial know–how from Germany. The Beton–Kalender was founded in 1906 in Berlin, and very soon after it has become a "bible" for construction engineers. Its founder Fritz von Emperger (1862–1942) thought that it should support the annual progress of the new building method with ferro–concrete structures "until its tempestuous development would be brought to the end". But, with exception 1945–50 it is published annually until today.
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Author: Christoph HEINEMEYER Doctor Engineer RWTH Aachen University Aachen, Germany ,Markus FELDMANN Professor RWTH Aachen University Aachen, Germa | Size: 531 KB | Format:PDF | Quality:Unspecified | Year: 2008 | pages: 14
Increasing vibration problems encountered in the last few years show that footbridges should no longer be designed for static loads only but also for the dynamic actions and vibration behaviour of the footbridge due to pedestrian loading.
For this reason European research has been performed to come up with a design concept for footbridges that takes into account different traffic situations and individual demands on vibration comfort. So the elaborated guideline considers different types of pedestrian traffic and the traffic density which can greatly influence comfort requirements of the bridge and the dynamic behaviour. It is important to predict the effect of pedestrian traffic on footbridges at the design stage and in the later verification of serviceability in order to guarantee a comfort level for the user. This guide gives recommendations for designer and client to find relevant design situations as well as methods how to prove if vibration requirements are fulfilled
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A Beginner's Guide to Structural Equation Modeling 3rd ed
Author: Randall E. Schumacker & Richard G. Lomax | Size: 7.8 MB | Format:PDF | Quality:Unspecified | Publisher: Routledge | Year: 2010 | pages: 531 | ISBN: 1841698911
This best-seller introduces readers to structural equation modeling (SEM) so they can conduct their own analysis and critique related research. Noted for its accessible, applied approach, chapters cover basic concepts and practices and computer input/output from the free student version of Lisrel 8.8 in the examples.
Each chapter features an outline, key concepts, a summary, numerous examples from a variety of disciplines, tables, and figures, including path diagrams, to assist with conceptual understanding.
The book first reviews the basics of SEM, data entry/editing, and correlation. Next the authors highlight the basic steps of SEM: model specification, identification, estimation, testing, and modification, followed by issues related to model fit and power and sample size. Chapters 6 through 10 follow the steps of modeling using regression, path, confirmatory factor, and structural equation models. Next readers find a chapter on reporting SEM research including a checklist to guide decision-making, followed by one on model validation. Chapters 13 through 16 provide examples of various SEM model applications. The book concludes with the matrix approach to SEM using examples from previous chapters.
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The advantages of composite materials include a high specific strength and stiffness, formability, and a comparative resistance to fatigue cracking and corrosion. However, not forsaking these advantages, composite materials are prone to a wide range of defects and damage that can significantly reduce the residual strength and stiffness of a structure or result in unfavorable load paths.
Emphasizing defect identification and restitution, Defects and Damage in Composite Materials and Structures explains how defects and damage in composite materials and structures impact composite component performance. Providing ready access to an extensive, descriptive list of defects and damage types, this must-have reference:
• Examines defect criticality in composite structures
• Recommends repair actions to restore structural integrity
• Discusses failure modes and mechanisms of composites due to defects
• Reviews NDI processes for finding and identifying defects in composite materials
Relating defect detection methods to defect type, the author merges his experience in the field of in-service activities for composite airframe maintenance and repair with indispensable reports and articles on defects and damage in advanced composite materials from the last 50 years.
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An Introduction to the Mathematical Theory of Vibrations of Elastic Plates
Author: R. D. Mindlin, Jiashi Yang | Size: 5 MB | Format:PDF | Quality:Unspecified | Publisher: Kingdwarf | Year: 2007 | pages: 212 | ISBN: 9812703810
This book by the late R D Mindlin is destined to become a classic introduction to the mathematical aspects of two-dimensional theories of elastic plates. It systematically derives the two-dimensional theories of anisotropic elastic plates from the variational formulation of the three-dimensional theory of elasticity by power series expansions. The uniqueness of two-dimensional problems is also examined from the variational viewpoint. The accuracy of the two-dimensional equations is judged by comparing the dispersion relations of the waves that the two-dimensional theories can describe with prediction from the three-dimensional theory. Discussing mainly high-frequency dynamic problems, it is also useful in traditional applications in structural engineering as well as provides the theoretical foundation for acoustic wave devic
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Sediments, which constitute the surface of the Earth, start their journey to rivers with the energy obtained from rainfalls, fl oods and other natural processes. Due to transport of sediments, rivers develop with various appearances and functions, and play a crucial role in the activities of human beings and the life cycles of other species.
River sediment, as a conventional topic for river management, has been the topic of continuing research since ancient times, and since then significant progresses in river sediment research has been made. Nowadays, river sediment is much more connected to the activities of mankind and other species, following the increasing awareness of the co-existence of humans and nature.
Advances in River Sediment Research comprises the proceedings of the 12th International Symposium on River Sedimentation (ISRS2013, Kyoto, Japan, 2-5 September 2013). The book contains two keynote papers and 274 peer-reviewed regular contributions from all over the world, and covers recent accomplishments in theoretical developments, numerical simulations, laboratory experiments, field investigations and management methodologies of river sediment related issues. The book may serve as a reference book for graduate students, researchers, engineers and practitioners in disciplines of hydraulic, environmental, agricultural and geological engineering.
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Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures
Author: George Deodatis, Bruce R. Ellingwood, Dan M. Frangopol | Size: 470 MB | Format:PDF | Quality:Unspecified | Year: 2014 | pages: 5732 | ISBN: 1138000868
Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures contains the plenary lectures and papers presented at the 11th International Conference on STRUCTURAL SAFETY AND RELIABILITY (ICOSSAR2013, New York, NY, USA, 16-20 June 2013), and covers major aspects of safety, reliability, risk and life-cycle performance of structures and infrastructures, with special focus on advanced technologies, analytical and computational methods of risk analysis, probability-based design and regulations, smart systems and materials, life-cycle cost analysis, damage assessment, social aspects, urban planning, and industrial applications. Emerging concepts as well as state-of-the-art and novel applications of reliability principles in all types of structural systems and mechanical components are included. Civil, marine, mechanical, transportation, nuclear and aerospace applications are discussed.
The unique knowledge, ideas and insights make this set of a book of abstracts and searchable, full paper USBdevice must-have literature for researchers and practitioners involved with safety, reliability, risk and life-cycle performance of structures and infrastructures.
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> Presents methodologies for reducing the variability of concrete performance
> Discusses the components of variability (materials, manufacturing, and testing) in terms of quality control
> Examines cost savings and increased business volume due to improved quality practices
> Considers variables such as material handling, mixing, transporting, delivery time, and temperature, and their effects on quality
> Explains how higher quality and lower variability helps with industry sustainability
Summary
Improve the Quality of Concrete, Improve the Quality of Construction
Quality measurement is not prevalent in the concrete industry and quality investment is not seen as potentially generating a positive return. Improving Concrete Quality examines how and why concrete quality should be measured, and includes instruction on developing specifications with the aim of improving concrete quality.
Reduce Concrete Variability: Reduce Costs and Increase Volume
The first part of the book considers the tangible and intangible benefits of improved quality. The later chapters explore concrete strength variability in detail. It provides a greater grasp of the variation in concrete, as well as a deeper understanding of how material variability affects concrete performance. The author discusses the components of variability (material, manufacturing, testing) and provides steps to measuring and reducing variability to improve the quality of concrete. The text also contains a chapter on data analysis for quality monitoring and test results.
Come Away with Practices and Tools That Can Be Applied Immediately:
> Provides techniques and how specifications can improve concrete quality
> Offers a clear understanding of the link between the materials (cement, SCM, aggregate, water, air), manufacturing, testing variability, and concrete quality
> Includes information on analyzing test data to improve quality
Improving Concrete Quality quantifies the benefits of improved quality, and introduces novel ways of measuring concrete quality. This text is an ideal resource for quality personnel in the concrete industry. It also benefits architects, engineers, contractors, and researchers.
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