Sydney Masonic Centre

Sydney Masonic Centre was built in 1974 and the tower in 2004.

Construction is of form concrete facade. The Civic Tower is Australia's first building to be fully supported on a central lift core without the use  of  continuous  perimeter columns  extending  down  to footing levels. Constructed above Sydney's Masonic Centre,  the innovative  structural   design features a space frame using post tensioned tie elements and high strength concrete filled tubular steel struts to transfer the 25 story office building perimeter back onto its core