111 Eagle Street that located in Brisbane, Australia, was designed by Cox Rayner Architects. The ‘organic-vertical’ structure of the tower was devised as a method of transferring its weight to the edge of the site due to the existence of loading dock and carpark entrance to the wider precinct directly under the site. This strategy evolved into a distinctive architectural expression that has a synergy with two large historic fig trees at the base of the building. This relationship inspired the concept of extending the structure above the roof into a planted canopy over roof terraces.
The structural system forms an integral role with several environmental strategies including gas-fired cogeneration, river heat rejection, chilled beam air-conditioning and black water recycling aimed at achieving a 6 star Green Star rating. A further attribute of the structure is that it produces very fine column dimensions such that at ground level, the building conceived as a pedestrian thoroughfare between plazas on either side.