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The key to this question is the center of gravity. Take for instance the space needle in Seattle WA.

Bottom of foundation: 30 feet below ground

The foundation weighs 5,850 tons and there are 250 tons of reinforcing steel alone in the foundation. The Needle structure weighs 3,700 tons, 5850 tons below ground, 3700 tons above ground. The center of gravity is almost certainly subterranean.

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12y ago

What else can I help you with?