The building under construction, the Airside Building, consisted of precast concrete beams, columns and precast prestressed hollow core concrete planks. During the erection and placement of hollow core precast planks at the roof level, several precast concrete beams, column, and hollow core planks at the roof and concourse levels collapsed. One construction worker, on the concourse level, died due to the falling debris of the collapsed beams and planks. Another construction worker was seriously injured.