Yuncken Freeman carried out a series of experiments for the design proposals of BHP House in the construction processes of their own offices in 1970, located at 411-415 King Street, Melbourne. Under the advice of Fazlur Khan, a structural engineer from Skidmore, Owings & Merrill, the design revolves around four basic components in order to reinvent the tower as a 'cantilever' and achieve the properties of a 'giant stiff structural tube'.
Yuncken Freeman conducted a series of trials to develop the design plans for BHP House, which were implemented in their own office buildings at 411-415 King Street, Melbourne, in 1970. Under Fazlur Khan's expert supervision as a structural engineer from Skidmore, Owings & Merrill, the building's design focused on four fundamental components to reconfigure it into a 'cantilever' and achieve the characteristics of a 'giant stiff structural tube'.