Timber Bridges
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Timber Bridges
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Author : Christopher J. Mettem
language : en
Publisher: Routledge
Release Date : 2013-04-15
Timber Bridges written by Christopher J. Mettem and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-15 with Technology & Engineering categories.
Bridges built in timber are enjoying a significant revival, both for pedestrian and light traffic and increasingly for heavier loadings and longer spans. Timber's high strength-to-weight ratio, combined with the ease and speed of construction inherent in the off-site prefabrication methods used, make a timber bridge a suitable option in many different scenarios. This handbook gives technical guidance on forms, materials, structural design and construction techniques suitable for both small and large timber bridges. Eurocode 5 Part Two (BS EN 1995-2) for the first time provides an international standard for the construction of timber bridges, removing a potential obstacle for engineers where timber construction for bridges has not – in recent centuries at least – been usual. Clearly illustrated throughout, this guide explains how to make use of this oldest construction material in a modern context to create sustainable, aesthetically pleasing, practical and durable bridges. Worldwide examples include Tourand Creek Bridge, Canada; Toijala, Finland; Punt la Resgia, Switzerland; Pont de Crest, France; Almorere Pylon Bridge, the Netherlands.
Timber Bridges
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Author : Michael Ritter
language : en
Publisher: Datamotion Publishing LLC
Release Date : 1990-12
Timber Bridges written by Michael Ritter and has been published by Datamotion Publishing LLC this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-12 with Technology & Engineering categories.
In this comprehensive classic manual, the author describes the use of timber as bridge material, types of timber bridges, the properties of wood and wood products, preservation and protection of timber bridges, timber design concepts for bridges, loads and forces on timber bridges, design of beam superstructures, design of longitudinal deck superstructures, design of longitudinal stress-laminated deck superstructures, rail systems for timber decks, wearing surfaces for timber decks, timber bridge fabrication and construction, bridge inspection of decay and other deterioration, maintenance, rehabilitation and replacement of timber bridges. This is a digitally recreated publication of the original manuscript (1990), comprising over 900 pages, produced in its entirety. Wood was probably the first material used by humans to construct a bridge. Although in the 20th century concrete and steel replaced wood as the major materials for bridge construction, wood is still widely used for short- and medium-span bridges. Of the bridges in the United States with spans longer than 20 feet, approximately 12 percent of them, or 71,200 bridges, are made of timber. In the USDA Forest Service alone, approximately 7,500 timber bridges are in use, and more are built each year. The railroads have more than 1,500 miles of timber bridges and trestles in service. In addition, timber bridges recently have attracted the attention of international organizations and foreign countries, including the United Nations, Canada, England, Japan, and Australia.
Timber Bridges
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Author : Michael A. Ritter
language : en
Publisher:
Release Date : 2005
Timber Bridges written by Michael A. Ritter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Technology & Engineering categories.
Timber's strength, light weight, and energy-absorbing properties furnish features desirable for bridge construction. Timber is capable of supporting short-term overloads without adverse effects. Contrary to popular belief, large wood members provide good fire resistance qualities that meet or exceed those of other materials in severe fire exposures. From an economic standpoint, wood is competitive with other materials on a first-cost basis and shows advantages when life cycle costs are compared. Timber bridges can be constructed in virtually any weather conditions, without detriment to the material. Wood is not damaged by continuous freezing and thawing and resists harmful effects of de-icing agents, which cause deterioration in other bridge materials. Timber bridges do not require special equipment for installation and can normally be constructed without highly skilled labor. They also present a natural and aesthetically pleasing appearance, particularly in natural surroundings. The misconception that wood provides a short service life has plagued timber as a construction material. Although wood is susceptible to decay or insect attack under specific conditions, it is inherently a very durable material when protected from moisture. Many covered bridges built during the 19th century have lasted over 100 years because they were protected from direct exposure to the elements. In modem applications, it is seldom practical or economical to cover bridges; however, the use of wood preservatives has extended the life of wood used in exposed bridge applications. Using modem application techniques and preservative chemicals, wood can now be effectively protected from deterioration for periods of50 years or longer. In addition, wood treated with preservatives requires little maintenance and no painting. Another misconception about wood as a bridge material is that its use is limited to minor structures of no appreciable size. This belief is probably based on the fact that trees for commercial timber are limited in size and are normally harvested before they reach maximum size. Although tree diameter limits the size of sawn lumber, the advent of glued-laminated timber (glulam) some 40 years ago provided designers with several compensating alternatives. Glulam, which is the most widely used modem timber bridge material, is manufactured by bonding sawn lumber laminations together with waterproof structural adhesives. Thus, glulam members are virtually unlimited in depth, width, and length and can be manufactured in a wide range of shapes. Glulam provides higher design strengths than sawn lumber and provides better utilization of the available timber resource by permitting the manufacture of large wood structural elements from smaller lumber sizes. Technological advances in laminating over the past four decades have further increased the suitability and performance of wood for modern highway bridge applications.
Timber Bridges
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Author : Michael A. Ritter
language : en
Publisher:
Release Date : 1990
Timber Bridges written by Michael A. Ritter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Wooden bridges categories.
Timber Bridges
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Author : National Research Council (U.S.). Transportation Research Board
language : en
Publisher: Transportation Research Board National Research
Release Date : 1986
Timber Bridges written by National Research Council (U.S.). Transportation Research Board and has been published by Transportation Research Board National Research this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Technology & Engineering categories.
Competitiveness Of Timber Bridges
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Author : Martin Gustafsson
language : en
Publisher:
Release Date : 1996
Competitiveness Of Timber Bridges written by Martin Gustafsson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Seismic Vulnerability Of Timber Bridges And Timber Substructures
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Author : Ayman A. Shama
language : en
Publisher:
Release Date : 2007
Seismic Vulnerability Of Timber Bridges And Timber Substructures written by Ayman A. Shama and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Earthquake engineering categories.
Modern Timber Bridges
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Author : Canadian Institute of Timber Construction
language : en
Publisher:
Release Date : 1960
Modern Timber Bridges written by Canadian Institute of Timber Construction and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with Bridges categories.
A Treatise On Mountain Roads Live Loads And Bridges
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Author : Henry St. Clair Wilkins
language : en
Publisher:
Release Date : 1879
A Treatise On Mountain Roads Live Loads And Bridges written by Henry St. Clair Wilkins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1879 with Bridges categories.
Timber Bridges
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Author : Michael A. Ritter
language : en
Publisher:
Release Date : 1992
Timber Bridges written by Michael A. Ritter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Wooden bridges categories.
This report presents a comprehensive analysis of the design, construction, inspection, and maintenance of timber bridges.