Why the tallest building on Earth is shaped to confuse the wind

The Burj Khalifa is 828m tall and very slender, so its biggest enemy is the wind, not its weight. As wind flows past a tower it sheds swirls that tug it side to side, and if that rhythm matches the tower's sway, it grows dangerous. The fix: three wings that step inward at different heights, so the building is a different shape at every level and the swirls never sync. The shape confuses the wind. Full breakdown on the channel. Free structural engineering tools from CivilAxis - search CivilAxis.