Beneath its design is the engineering of what is arguably the most complicated high-rise to be built in the U.S. Calculated to sway during powerful Santa Anas and absorb ground movement during severe earthquakes, it is wedded aesthetically and technically to the unique footprint of the region. Geologist Rosalind Munro of AMEC, a geotechnical consulting firm, at the Wilshire Grand tower construction site in downtown L.A. Before construction started, Munro went down a borehole eight stories deep to verify the stability of the building site. Construction workers guide a jumping wall form system into place as it is lowered into position by a crane into the core of the Wilshire Grand tower. Remote-controlled booms are used to place concrete with accuracy as workers pour the foundation for the New Wilshire Grand tower.