Friday, October 28, 2011

The Gateway Arch

“Pleasant this morning and we dug the balance of our potatoes this forenoon.  Picked up double box full after dinner and put them in the cellar.  And the balance about 30 bu and unloaded them in the tool house.  A little shower about two o’clock made them very muddy.  Hard frost this morning.  Put in about 45 bu small ones also.”  

The arch is a weighted catenary—its legs are wider than its upper section
The Gateway Arch, or Gateway to the West, is an arch that is the centerpiece of the Jefferson National Expansion Memorial in St. Louis, Missouri. It was built as a monument to the westward expansion of the United States. At 630 feet (192 m), it is the tallest man-made monument in the United States, Missouri's tallest accessible building, and the largest architectural structure designed as a weighted or flattened catenary arch.
The arch is located at the site of St. Louis' foundation, on the west bank of the Mississippi River where Pierre Laclède, just after noon on February 14, 1764, told his aide, Auguste Chouteau, to build a city.
The Gateway Arch was designed by Finnish American architect Eero Saarinen and structural engineer Hannskarl Bandel in 1947. Construction began on February 12, 1963, and ended on October 28, 1965, costing US$13 million at the time ($90,491,005 today). The monument opened to the public on June 10, 1967

Saarinen working with a model of the arch in 1957

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