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Project Highlights

77 King Street - Sydney

Goherah Limestone - 77 King Street, Sydney



Although located on the corner of King and George Street, the newly completed 77 King Street has no pretentions to royalty; instead it presents a facade of simple style.  The Goherah limestone from Iran, displays a subtle beige background with light tan to grey-blue hues.  The colouring blends wonderfully with the broad glass curtain to give the building the feeling of light and fresh air. The seventeen storey building is arguably the first building within Sydney to use a significant amount of limestone within its curtain wall facade.




Limestone Cladding - 77 King Street, Sydney


The use of limestone did present particular challenges.  As for most limestones, block selection was of great importance to ensure consistency in appearance and quality.   The evaluation of the stylolites (similar to fine clay veins) present within most limestones also required additional testing and quality assurance to ensure proper design and engineering of the anchorage system. The limestone facade construction used 1700 square metres of stone and required the design of over fifty different types of anchor configurations.


 Limesone cladding - 77 King Street, Sydney


Stone Initiatives assisted with the initial stone evaluation, with special emphasis on basis physical properties such as water absorption, density and flexural strength.  Research was also carried out on the effect of the stylolites and any subsequent reduction in flexural strength.  The results of this research were used to develop a visual inspection guide to be used as part of the production quality control phase.



Contract value: $50.0m
Client: Kingvest Pty Ltd
Architect: Burley Katon Halliday and PTW Architects
Stone supply and fix: Deemah Stone Pty Ltd
Stone consultant: Stone Initiatives