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Modeling The Long Term Behavior Of Structural Timber

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Modeling The Long Term Behavior Of Structural Timber

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Author : J Rg Sch Nzlin
language : en
Publisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG
Release Date : 2011-02

Modeling The Long Term Behavior Of Structural Timber written by J Rg Sch Nzlin and has been published by Sudwestdeutscher Verlag Fur Hochschulschriften AG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-02 with categories.

Creep deformation influences the serviceability limit state as well as the ultimate limit state of timber structures. In order to consider this time-dependent behavior, creep coefficients and rheological models have been developed by various researchers. Comparing the rheological models, quite different temporal deformations are evaluated for a duration of load of 50 years. In order to find the model, which is most suitable to the situation in the region of Tubingen, South-West Germany, the existing deformations of several beams in roof structures in opened, protected but not heated buildings are measured. By loading the structure the elastic global stiffness of the particular element is determined. So creep coefficients can be evaluated, which should have been used by the engineer in order to get the existing deflection after 50 years. Within the region of Tubingen, on average a creep coefficient of 2.23 was found based on these measurements. However, the standard deviation of 0.97 is quite large. For the numerical evaluation of the time-dependent behavior Toratti's model is modified, so that it matches the measured deformations.

American Environmentalism

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Author : J. Michael Martinez
language : en
Publisher: CRC Press
Release Date : 2013-06-20

American Environmentalism written by J. Michael Martinez and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-20 with Law categories.

Protecting the natural environment and promoting sustainability have become important objectives, but achieving such goals presents myriad challenges for even the most committed environmentalist. American Environmentalism: Philosophy, History, and Public Policy examines whether competing interests can be reconciled while developing consistent, coherent, effective public policy to regulate uses and protection of the natural environment without destroying the national economy. It then reviews a range of possible solutions. The book delves into key normative concepts that undergird American perspectives on nature by providing an overview of philosophical concepts found in the western intellectual tradition, the presuppositions inherent in neoclassical economics, and anthropocentric (human-centered) and biocentric (earth-centered) positions on sustainability. It traces the evolution of attitudes about nature from the time of the Ancient Greeks through Europeans in the Middle Ages and the Renaissance, the Enlightenment and the American Founders, the nineteenth and twentieth centuries, and up to the present. Building on this foundation, the author examines the political landscape as non-governmental organizations (NGOs), industry leaders, and government officials struggle to balance industrial development with environmental concerns. Outrageous claims, silly misrepresentations, bogus arguments, absurd contentions, and overblown prophesies of impending calamities are bandied about by many parties on all sides of the debate—industry spokespeople, elected representatives, unelected regulators, concerned citizens, and environmental NGOs alike. In lieu of descending into this morass, the author circumvents the silliness to explore the crucial issues through a more focused, disciplined approach. Rather than engage in acrimonious debate over minutiae, as so often occurs in the context of "green" claims, he recasts the issue in a way that provides a cohesive look at all sides. This effort may be quixotic, but how else to cut the Gordian knot?

Springer Handbook Of Wood Science And Technology

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Author : Peter Niemz
language : en
Publisher: Springer Nature
Release Date : 2023-04-01

Springer Handbook Of Wood Science And Technology written by Peter Niemz and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-01 with Technology & Engineering categories.

This handbook provides an overview on wood science and technology of unparalleled comprehensiveness and international validity. It describes the fundamental wood biology, chemistry and physics, as well as structure-property relations of wood and wood-based materials. The different aspects and steps of wood processing are presented in detail from both a fundamental technological perspective and their realisation in industrial contexts. The discussed industrial processes extend beyond sawmilling and the manufacturing of adhesively bonded wood products to the processing of the various wood-based materials, including pulp and paper, natural fibre materials and aspects of bio-refinery. Core concepts of wood applications, quality and life cycle assessment of this important natural resource are presented. The book concludes with a useful compilation of fundamental material parameters and data as well as a glossary of terms in accordance with the most important industry standards. Written and edited by a truly international team of experts from academia, research institutes and industry, thoroughly reviewed by external colleagues, this handbook is well-attuned to educational demands, as well as providing a summary of state-of-the-art research trends and industrial requirements. It is an invaluable resource for all professionals in research and development, and engineers in practise in the field of wood science and technology.

Research Paper Fpl

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Author :
language : en
Publisher:
Release Date : 1985

Research Paper Fpl written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Forest products categories.

Research Paper Fpl Rp

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Author :
language : en
Publisher:
Release Date : 1986

Research Paper Fpl Rp written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Forest products categories.

Improvement Of Buildings Structural Quality By New Technologies

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Author : Christian Schauer
language : en
Publisher: Taylor & Francis
Release Date : 2005-01-20

Improvement Of Buildings Structural Quality By New Technologies written by Christian Schauer and has been published by Taylor & Francis this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-01-20 with Technology & Engineering categories.

Launched in May 2000, the aims of the COST C12 cooperative action were:to develop, combine and disseminate new technical engineering technologiesto improve the quality of urban buildingsto propose new technical solutions to architects and plannersto reduce the disturbance caused by construction in urban areas and improve urban quality of life.This

4th International Phd Symposium In Munich Germany

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Author : FIB – International Federation for Structural Concrete
language : en
Publisher: FIB - Féd. Int. du Béton
Release Date : 2002-09-01

4th International Phd Symposium In Munich Germany written by FIB – International Federation for Structural Concrete and has been published by FIB - Féd. Int. du Béton this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-09-01 with Technology & Engineering categories.