Saudi Arabia to Construct Tallest Building in the World (or ever)

(CNN) -- Dubai, long champion of all things biggest, longest and most expensive, will soon have some competition from neighboring Saudi Arabia.
Dubai's iconic Burj Khalifa, the world's tallest building, could be stripped of its Guinness title if Saudi Arabia succeeds in its plans to construct the even larger Kingdom Tower in Jeddah -- a prospect looking more likely as work begins next week, according to Construction Weekly.
Consultants Advanced Construction Technology Services have recently announced testing materials to build the 3,280-feet (1 kilometer) skyscraper (the Burj Khalifa, by comparison, stands at a meeker 2,716 feet, or 827 meters).
The Kingdom Tower, estimated to cost $1.23 billion, would have 200 floors and overlook the Red Sea. Building it will require about 5.7 million square feet of concrete and 80,000 tons of steel, according to the Saudi Gazette.
Building a structure that tall, particularly on the coast, where saltwater could potentially damage it, is no easy feat. The foundations, which will be 200 feet (60 meters) deep, need to be able to withstand the saltwater of the nearby ocean. As a result, Advanced Construction Technology Services will test the strength of different concretes.
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