The structure's 10.5-in. concrete flat-plate floor slabs span more than 35 ft from the core wall to the perimeter columns, with the flat plate—a two-way reinforced framing system of uniform ...

Flat-plate floor slabs are typically 10 in. thick. The foundations consist of spread footings, with tie-down rods into rock to resist overturning. Only the core sits on a mat. The skinny tower's ...