140 Lonsdale Street

Forming part of the Wesley Place precinct, 140 Lonsdale Street is an innovative urban workplace in the heart of Melbourne.

The works for this 22-floor commercial tower involved the design and certification of the curtain wall with integrated sunshades and louvres. The tower consists of a unitised curtain wall façade designed to resist blast and intruder events.

A unique challenge of this design was the requirement for the curtain wall façade to resist blast loads across the full height of the tower. This led to TTW providing a bespoke curtain wall profile design with interlocking elements for the relevant loads, while keeping the tolerance to take structural movements. We needed a solution to keep the facility secure and mitigate the impact of blast across the full height of the building.

Dynamic, time-dependent analysis of the curtain wall was undertaken to meet the client’s required level of protection under blast events, while providing advice for the design, material selection, and installation of this unique system.