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The Malaysian government specified that construction be completed in six years. To meet the deadline, two building consortiums were hired — one South Korean, one Japanese — with each responsible for one of the towers.
The first to finish would win the right to build the skybridge. The South Korean crew claimed victory by completing Tower 2 the east tower first. The double-deck skybridge that hangs between the towers at the 41st and 42nd floors is not directly attached on either end. Instead, it is designed to slide in and out as the towers sway during high winds. It also helps support the swaying towers. The skybridge, ft long, is supported by arches that are bolted to level 29 of each of tower.
The lower level is open to the public, but tickets are limited to about 1, people a day. The skybridge connects a conference room, an executive dining room and a prayer room.
When Tower 2 reached the 72nd floor, engineers discovered it was leaning about 25 millimeters off vertical — or nearly an inch. To correct the lean, the next 16 floors were slanted back 20 millimeters. Yet there's a controversy. The highest occupied floor in the Sears Tower is actually feet higher than the top floor of the Petronas Towers, and its antennae stretch higher still. So why are the Petronas Towers considered the world's tallest buildings?
Spires do not contain floors, but they are counted in the world's tallest building race for one architectural reason: they're nice to look at. Built over a former racetrack, the Petronas Towers reflect a unique blend of religion and economic prosperity. Each tower's floor plan forms an eight-pointed star, a design inspired by traditional Malaysian Islamic patterns.
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