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A platform for research: civil engineering, architecture and urbanism
The Stiffening System of Long-Span Suspension Bridges For Railway Trains
The improvements in the quality of the materials used for the construction of bridges have gradually increased the largest practicable distance between the piers, or the length of span. This is from 200 to 300 ft. for stone, concrete and timber bridges, and a maximum of 2 000 ft. for bridges of the best structural steel now obtainable. The progress in the manufacture of steel wire has made it practicable to construct bridges of a span of over 3 000 ft. Long-span bridges generally cross navigable waters, where the difficulty of erection limits the choice to cantilever or suspension bridges. Different locations offer unequal advantages for the two types. In some locations natural rock can be used for the anchorages of a suspension bridge; in others, these anchorages have to be built of concrete or masonry on deep and expensive foundations. It is, therefore, impossible to fix accurately the limits of span for the economical use of the types without investigating the proposed site.
The Stiffening System of Long-Span Suspension Bridges For Railway Trains
The improvements in the quality of the materials used for the construction of bridges have gradually increased the largest practicable distance between the piers, or the length of span. This is from 200 to 300 ft. for stone, concrete and timber bridges, and a maximum of 2 000 ft. for bridges of the best structural steel now obtainable. The progress in the manufacture of steel wire has made it practicable to construct bridges of a span of over 3 000 ft. Long-span bridges generally cross navigable waters, where the difficulty of erection limits the choice to cantilever or suspension bridges. Different locations offer unequal advantages for the two types. In some locations natural rock can be used for the anchorages of a suspension bridge; in others, these anchorages have to be built of concrete or masonry on deep and expensive foundations. It is, therefore, impossible to fix accurately the limits of span for the economical use of the types without investigating the proposed site.
The Stiffening System of Long-Span Suspension Bridges For Railway Trains
Mayer, Joseph (author)
Transactions of the American Society of Civil Engineers ; 48 ; 371-421
2021-01-01
511902-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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