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Author : Joe W. Clark
Publisher : Unknown
Page : 56 pages
File Size : 44,8 Mb
Release : 1972
Category : Bridges
ISBN : MINN:31951D02067486O
Author : United States. Superintendent of Documents
Publisher : Unknown
Page : 1252 pages
File Size : 49,5 Mb
Release : 1973
Category : Government publications
ISBN : UCAL:B2968750
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Author : Anonim
Publisher : Unknown
Page : 1388 pages
File Size : 47,7 Mb
Release : 2024-06-10
Category : Government publications
ISBN : WISC:89117116475
Author : United States. Superintendent of Documents
Publisher : Unknown
Page : 1408 pages
File Size : 40,8 Mb
Release : 1976
Category : United States
ISBN : STANFORD:36105021034173
Author : Wallace E. Eslyn,Joe W. Clark
Publisher : Unknown
Page : 42 pages
File Size : 50,7 Mb
Release : 1979
Category : Wood
ISBN : OSU:32435056715675
Author : Anonim
Publisher : Unknown
Page : 40 pages
File Size : 44,7 Mb
Release : 1949
Category : Agriculture
ISBN : MINN:20000003803810
Set includes revised editions of some issues.
Author : Anonim
Publisher : Unknown
Page : 40 pages
File Size : 46,8 Mb
Release : 1979
Category : Nutrition
ISBN : UOM:39015080361408
Author : Boyd E. Wickman,Charles P. Schwalbe,David R. Houston,H. Gene Paul,Jerald E. Dewey,Milton J. Stelzer,Richard R. Mason,Torolf R. Torgersen,United States. Dept. of Agriculture
Publisher : Unknown
Page : 920 pages
File Size : 50,7 Mb
Release : 1978
Category : Agriculture
ISBN : UIUC:30112019249371
Author : Daniel W. Lester
Publisher : Unknown
Page : 560 pages
File Size : 43,6 Mb
Release : 1980
Category : Government publications
ISBN : UCSC:32106020209323
Author : National Agricultural Library (U.S.)
Publisher : Unknown
Page : 560 pages
File Size : 52,8 Mb
Release : 1975
Category : Agriculture
ISBN : UOM:39015056977971
Author : Michael A. Ritter,Departm U. S. Department of Agriculture,Forest Service U. S. Forest Service
Publisher : Unknown
Page : 500 pages
File Size : 55,8 Mb
Release : 2005
Category : Technology & Engineering
ISBN : 1410221911
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 : Abel O. Olorunnisola
Publisher : Springer
Page : 284 pages
File Size : 44,6 Mb
Release : 2017-08-31
Category : Technology & Engineering
ISBN : 9783319653433
This book provides basic information on the design of structures with tropical woods. It is intended primarily for teaching university- and college-level courses in structural design. It is also suitable as a reference material for practitioners. Although parts of the background material relate specifically to West and East Africa, the design principles apply to the whole of tropical Africa, Latin America and South Asia. The book is laced with ample illustrations including photographs of real life wood structures and structural elements across Africa that make for interesting reading. It has numerous manual and Excel spread sheet worked examples and review questions that can properly guide a first-time designer of wooden structural elements. A number of design problems are also solved using the FORTRAN programming language. Topics covered in the thirteen chapters of the book include a brief introduction to the book, the anatomy and physical properties of tropical woods; a bri ef review of the mechanical properties of wood, timber seasoning and preservation, uses of wood and wood products in construction; basic theory of structures, and structural load computations; design of wooden beams, solid and built-up wooden columns, wood connections and wooden trusses; as well as a brief introduction to the design of wooden bridges.
Author : Matt Crossman,Jonathan Simm
Publisher : Thomas Telford
Page : 356 pages
File Size : 52,9 Mb
Release : 2004
Category : Business & Economics
ISBN : 0727732838
This informative manual has been designed to provide guidance on the principal issues surrounding the use of timber in coastal and river engineering. For centuries timber has traditionally been used for the construction of a wide range of coastal and river structures including: groynes, jetties, lock gates, navigation aids and riverbank protection. It is an attractive choice of construction material because it is renewable, is easy to use, repair and recycle, has a high strength/weight ratio and is visually appealing.
Author : Anonim
Publisher : Unknown
Page : 114 pages
File Size : 52,6 Mb
Release : 1986
Category : Forestry engineering
ISBN : MINN:31951003077075H
Author : Peter Ross,Christopher Mettem,Andrew Holloway
Publisher : Trada Technology
Page : 0 pages
File Size : 45,5 Mb
Release : 2007
Category : Oak
ISBN : 1900510456
An illustrated technical guide to the use of green oak. It includes eleven case studies demonstrating best practice and inspirational design; provides information on design data and grading rules; features numerous colour photographs and diagrams; and describes the process of green oak construction: the design, framing and enclosing of structures.