The composite system creates a multistory Vierendeel truss that supports all primary loads and limits transient deflections. The cantilevered structure was built without tall shoring towers to optimize speed and cost efficiency, requiring plate girders at level four to support the erected steel’s weight. These girders were designed to bear the weight of the steel beams and columns up to the roof, allowing typical steel construction to proceed. Concrete slabs were poured out to the overhang’s edge on all floors, securing the diaphragm to the concrete cores and stabilizing the back-span. Overhang slabs were then poured, starting at the roof and pouring from level four upward.