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 undertook a range of experiments to refine the design concepts for BHP House, which were applied to their own office complexes at 411-415 King Street, Melbourne, in 1970. With Fazlur Khan's expert advice as a structural engineer from Skidmore, Owings & Merrill, the building's layout was structured around four key elements to create a 'cantilever' effect and replicate the properties of a 'giant stiff structural tube'.