INVERTED PYRAMID BREAKS THE MOLD Designers in Seattle used the city’s controversial “T ower Spacing Rule” to their advantage when they built Kinects T ower. The rule guarantees that no other tower will be built any closer than 60 feet, although lower structures can be built surrounding it. An innovative use of high-tech ultra-strong concrete allowed them to put the largest floor plates at the top of the tower, where the views are spectacular. Three sides of the tower taper gently outward, making the 39th level an astonishing 50 percent larger than the eighth level, and creating the feel of an inverted pyramid. 01. High-strength tower. Concrete strength of 12,000 pounds PSI up to the eighth level allows for reduced column sizes, fewer smaller columns, and increased leasable floor

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