The Brooklyn Bridge

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Analytical Study of the Brooklyn Bridge Throughout the 19th century, there was a considerable amount of public interest in building a bridge that spans connects the City of New York and Brooklyn, which are separated by the East River. This is due to the fact that at the time, the only modes of transportations between the two cities are ferries and boats. The demand for a bridge grew strongest during the winter of 1866-1867, when it was said that “the river was so choked with ice as to render transportation at times nearly helpless.” With great public demand then comes the funding necessary to build such a huge bridge. The City of Brooklyn invested three million dollars while the City of New York invested half as much, Brooklyn being more …show more content…
As mentioned previously, the suspenders make the deck flexible, allowing it to slightly travel with the wind. If the deck were completely stiff, it risks cracking or breaking due to various loads because the span is so long. However, the bridge may also break if the wind bends it around too much, thus requiring the stays to keep it strong enough to stand up to wind loading. For extra reinforcement, the stays are connected to trusses located on the edge of the decks, adding further stability since trusses are stiff and sturdy shapes. As for the actual strength of the cables themselves, they are made entirely of steel and are “made up of strands of parallel wires bound together into a compact cylindrical cable.” Steel is a metal alloy consisting of iron and carbon, which makes its atomic structure very compact and therefore makes steel a strong material in both compression and tension. As shown by the stress-strain curve, steel can withstand lots of stress without much strain in elastic deformation, revealing its strength. Also, the steel undergoes a lot of strain in the plastic region, which suggests that steel is ductile and won’t easily fracture due to fatigue, which bridges are exposed to. Thus, the cables on the Brooklyn Bridge are strong enough to carry heavy loads, being made of countless steel wires pushed together into one large rope. By having the cables be …show more content…
At the bottom of the deck are the floor beams, double trussed and connected all together to create one long span across the bridge. The double truss framework adds rigidity to the deck, especially considering that the deck spans continually and is therefore more flexible. A continual span helps deter large failures in the deck due to possible overloading and helps cope with all the vibrations that the bridge has to withstand from traffic and wind, which would more easily cause cracks if the deck were completely stiff. As mentioned before, however, fan shaped stays are present to give the deck some rigidity to prevent failure due to too much movement. The deck is both flexible enough and stiff enough to support various possible loads that the bridge can encounter while it is in

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