Evolution of Skyscrapers Essay

2748 Words Feb 9th, 2013 11 Pages

1.Historical Development In High-Rise Buildings
Ancient Skyscrapers - The Great Ziggurat of Babylon
Perhaps the most impressive structure in the ancient Middle East, the Great Ziggurat of Babylon was built over a span of several decades in the Sixth Century BC. Its seven stories, built upon a square foundation, stretched 300 feet into the sky. Some think it was the inspiration for the infamous Tower of Babel in the Book of Genesis. In this illustration, King Nebuchadnezzar, who ruled Babylon from 604 to 561 BC, is seen overlooking his capital

The towers of Bologna
The towers of and were built in Europe, or together until Bologna are slender, as much as 60 meters (150 feet) tall, by the rich for defense
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It was the start of a revolution in structural design that permitted higher and thinner towers than had ever been built before

Fig. 10 The Sears Tower

The Citicorp Building Skirts Disaster
The 59-story Citigroup Center building, completed in 1977, had to undergo a costly strength upgrade the following year after it was discovered that the structure was dangerously vulnerable to strong diagonal winds hitting the building's corners. This weakness was a consequence of the placement of the main support columns at the centre of the sides rather than on the corners because the building had to float over a church that owned the property. This bold design did win praise for the architect but he subsequently had to suffer the consequences - largely in secret lest panic break out - of experimenting with untested structural elements. If strong dangerous winds had actually toppled the Citicorp building, it is estimated that it might have taken 16 blocks of Manhattan with it.

Fig. 11 The Citicorp Building

The Petronas Tower
Tourists have their picture taken outside the soaring spires of the Petronas Towers in Kuala Lumpur, Malaysia. The 88-story towers, which were completed in the mid-to-late 1990s, were for several years the world's tallest buildings. The project was the harbinger of a global shift in skyscraper building in

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