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.

Download or read book Theory of Modern Steel Structures written by Linton Elias Grinter and published by . This book was released on 1936 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Engineering Index written by and published by . This book was released on 1922 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory of Modern Steel Structures Elastic and plastic analysis by statics written by Linton Elias Grinter and published by . This book was released on 1962 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Index written by and published by . This book was released on 1923 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of Modern Highway Bridges written by Narendra Taly and published by McGraw-Hill Companies. This book was released on 1998 with total page 1376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides an introduction to the theory and practice of designing modern highway bridge superstructures. Beginning with the history of bridges, it describes various types of bridge superstructures, materials of construction, bridge loadings, and analysis techniques for various types.

Download or read book Modern Examples of Road and Railway Bridges written by William H. Maw and published by . This book was released on 1872 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Engineering News written by and published by . This book was released on 1905 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highway Heavy Construction written by and published by . This book was released on 1938 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Journal written by and published by . This book was released on 1922 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vol. 7, no.7, July 1924, contains papers prepared by Canadian engineers for the first World power conference, July, 1924.

Download or read book Engineering written by and published by . This book was released on 1895 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Beeton s Dictionary of Universal Information Comprising a Complete Summary of the Sciences Arts Literary Knowledge Etc written by Samuel Orchart Beeton and published by . This book was released on 1870 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt: