6&8 Parramatta Square (6&8PS) is the tallest commercial tower in Western Sydney – measuring at 132,870m2 GFA, and 55-storeys. It the largest commercial office building in Australia. 6&8 PS is the final stage of what has become a world-class mixed-use precinct and vital civic meeting place for the broader city and region. The incredible scale and foundations of 6&8PS meant the building had to be designed differently to any other commercial tower.
BOJV’s team created a solution of over 200 ground anchors to prevent building uplift caused by ground water pressure when a large dyke was discovered in the natural rock beneath. 
The structure of the building consists of a hydrostatic foundation slab with a jump start steel basement and podium structure that is shared across the towers. Using smart engineering, the innovative structural steel ‘jump start’ methodology saved the client time and cost.
The two towers consist of separate reinforced concrete cores, post tensioned concrete slabs and an outrigger transfer structure to tolerate high wind. 
The result of smart design during the tender, BOJVs value engineering developed smart solutions to complex problems of the mega structure while still maintaining the desired function and appearance. Both sustainability and improved design outcomes were achieved.
This ground-breaking project was a significant achievement for the entire project team and is a worthy winner.