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Modern Timber Bridges
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Book Synopsis Timber Bridges by : Christopher J. Mettem
Download or read book Timber Bridges written by Christopher J. Mettem and published by Routledge. This book was released on 2013-04-15 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis The Timber Bridge Initiative, Fiscal Year by :
Download or read book The Timber Bridge Initiative, Fiscal Year written by and published by . This book was released on with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Timber Bridges by : Michael A. Ritter
Download or read book Timber Bridges written by Michael A. Ritter and published by . This book was released on 1990 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a comprehensive analysis of the design, construction, inspection, and maintenance of timber bridges.
Book Synopsis Modern Timber Bridges by : Jason S. Gordon
Download or read book Modern Timber Bridges written by Jason S. Gordon and published by . This book was released on 2017 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Perceptional Investigation Into the Adoption of Timber Bridges by : Robert L. Smith
Download or read book A Perceptional Investigation Into the Adoption of Timber Bridges written by Robert L. Smith and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wood in Transportation Program by : Wood in Transportation Program (U.S.).
Download or read book Wood in Transportation Program written by Wood in Transportation Program (U.S.). and published by . This book was released on with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crossings written by and published by . This book was released on 1990 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Influencing the Adoption of Timber Bridges by : Robert L. Smith
Download or read book Factors Influencing the Adoption of Timber Bridges written by Robert L. Smith and published by . This book was released on 1995 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Strategic Evaluation of Factors Affecting the Adoption of Timber Bridges by : Robert L. Smith
Download or read book A Strategic Evaluation of Factors Affecting the Adoption of Timber Bridges written by Robert L. Smith and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Timber Bridges by : Michael A. Ritter
Download or read book Timber Bridges written by Michael A. Ritter and published by . This book was released on 2005 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 of 50 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.
Author :National Research Council (U.S.). Transportation Research Board Publisher :National Research Council ISBN 13 : Total Pages :92 pages Book Rating :4.3/5 ( download)
Book Synopsis Low-volume Roads by : National Research Council (U.S.). Transportation Research Board
Download or read book Low-volume Roads written by National Research Council (U.S.). Transportation Research Board and published by National Research Council. This book was released on 1993 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wood in Transportation Publications List by : Wood in Transportation National Information Center
Download or read book Wood in Transportation Publications List written by Wood in Transportation National Information Center and published by . This book was released on 1997 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Potential of Producing Prefabricated, Modern Timber Bridge Components in Mississippi by :
Download or read book The Potential of Producing Prefabricated, Modern Timber Bridge Components in Mississippi written by and published by . This book was released on 1994 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Hierarchical Analysis of Bridge Decision Makers by : Robert L. Smith
Download or read book A Hierarchical Analysis of Bridge Decision Makers written by Robert L. Smith and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guide for In-Place Treatment of Wood in Historic Covered and Modern Bridges by : Stan Lebow
Download or read book Guide for In-Place Treatment of Wood in Historic Covered and Modern Bridges written by Stan Lebow and published by CreateSpace. This book was released on 2012-10-22 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historic covered bridges and current timber bridges can be vulnerable to damage from biodeterioration or fire. This guide describes procedures for selecting and applying inplace treatments to prevent or arrest these forms of degradation. Vulnerable areas for biodeterioration in covered bridges include members contacting abutments, members near the ends of bridges subject to wetting from splashing and members below windows or other openings that allow entry of wind-blown precipitation. Pressure-treated timber bridge members can be vulnerable when untreated wood is exposed by field fabrication or by the development of drying checks. The objective of an in-place preservative treatment is to distribute preservative into areas of a structure that are vulnerable to moisture accumulation and/or not protected by the original pressure treatment. Types of field treatments range from finishes, to boron rods or pastes, to fumigants. A limitation of in-place treatments is that they cannot be forced deeply into the wood as is done in pressure-treatment processes. However, some can be applied into the center of large members via treatment holes. These preservatives may be available as liquids, rods or pastes. Bridge members can be treated with fire retardants to delay ignition, reduce heat release, and slow the spread of flames. In-place coating products are available to reduce surface flammability, but these coatings may need to be reapplied on a regular basis if exposed to weathering. For more integrated protection, fire retardant treatment of bridge members may be combined with other forms of protection such as lights, alarms, sprinklers and monitoring systems.
Book Synopsis Standard Plans for Timber Bridge Superstructures by : James P. Wacker
Download or read book Standard Plans for Timber Bridge Superstructures written by James P. Wacker and published by . This book was released on 2001 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: These standardized bridge plans are for superstructures consisting of treated timber. Seven superstructure types are included: five longitudinal and two transverse deck systems. Both HS20 and HS25 loadings are included, along with L/360 and L/500 deflection criteria.
Download or read book Timber Bridges written by and published by . This book was released on 2004 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Timber is a highly versatile construction material, strong and lightweight, with tremendous ease of handling and workability. It is both attractive in its appearance and in its environmental credentials. Correctly selected it has good durability, particularly in relation to de-icing salts. Bridges made from wood also tend to exhibit a natural empathy with the landscape. For the bridge designer, using timber offers a multitude of possible bridge forms ranging from simple beams to glue laminated arches, trusses and space frames. Timber can also be used in conjunction with other materials such as natural stone, stainless steel and glass. Developments such as new, efficient connection techniques, modern wood based composites and stress laminated decks are further encouraging the use of timber for bridge building. Photographs of some modern bridges show the possibilities. This Digest covers the basic structural types, lists the standards for the different types of timber and composite that may be used, and discusses structural design including the evaluation of loads. Durability, detailing, connectors, parapets and handrails are covered briefly.
