Monday, June 16, 2008

Crossing The Firth Of Forth

The Forth Rail bridge, that spans the Firth of Forth, is Scotland's one internationally recognized landmark. Built between 1883 and 1890, it is the first bridge built entirely of steel, and even today is considered an engineering marvel. Much of the work was unprecedented, including the calculations for the effects of temperature stresses, erection stress and wind pressures. Although the cantilevered design was already known and used previously, this bridge inspired copies worldwide. Built to carry old steam locomotives hauling coal, ,currently 200 trains a day cross the Firth of Forth via the Forth Rail Bridge.

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