Lightweight aluminum wall forms and a "pour down" sequence contributed to the successful construction of the 44-story Nauru Tower. The tower is a mixed-use structure with the first five levels of retail and commercial space requiring special architectural treatment. Concrete for the 39 residential floors was placed using a construction sequence similar to that of tunnel forming systems; the slab plus walls and columns for the level below are poured at the same time, working from the deck forming surface. This system allowed the concrete superstructure to be built in just 17 months' time.
The fact that wall forms could be removed within about 24 hours led to the adoption of the forming system based on three floors of flying truss forms with one complete floor of aluminum wall forms. Each half-moon floor was divided into two deck pours of about 7,500 square feet each. Complementing the pour-down system, columns near the perimeter were built with hand-set forms, and the building core was formed with self-lifting gang forms that kept pace with the wall and slab construction. Aluminum panels were each equipped with three rollers and were light enough that three workers could move it out for the crane to lift it to the next floor the morning after the pour. A hinge connection made early stripping possible and provided a neat connection to the deck form.