Which is the world’s largest construction in terms of ground area?

While 828 meters high Burj Khalifa (known as Burj Dubai prior to its inauguration) is the tallest building in the world today (as of February 2011), the world record holder of a construction covering the largest ground area since last fifteen years is Japan.

The construction is Osaka’s Kansai International Airport (photo, above). Japan constructed the airport within a period of five years and opened it for civil aviation in 1994. The runway, terminals and parking area as well as the approach road to Kansai airport have been constructed above the Osaka Bay on thousands of steel piles and more than 1 million concrete columns driven in the sea bed. This mega-project was taken up in order to restrict the traveling time between Osaka city and the airport to less than 30 minutes and only seaward direction was available for it. The meticulousness of planning is revealed by the fact that although there is only one runway the provision has been made for parking 41 airplanes.

Although the height of this construction is negligible, its length is 4.27 kilometers and width is 1.25 kilometers making its overall area 5.33 square kilometers. It was the most ambitious project since the construction of the pyramids besides being the most expansive – costing 15 billion dollars. In order to ensure flawless construction of the project technologically advanced Japanese did not hesitate to engage the services of the Italian architect named Renzo Piano and the British engineer Peter Rice.

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