This prestige tower is made up of retail, commercial and luxury residential zones and occupies the last prime CBD Brisbane riverside site. The luxury apartments crowning the tower featured up to 5m cantilevered balconies in a highly sculptured form offering panoramic views up both reaches of the Brisbane River.

Project Value:
$147 million
Year Completed:
2005
Building Metrics:
Total Area: 58,000m2
53 Levels + 1 Basement
Sectors:
Commercial
Waterfront
Residential
Retail

Client:
Bloomberg Incorporation Limited
Primary Contractor:
Multiplex
Architect:
Harry Seidler
Robert Bird Group
Services:
Structural Engineering
Civil Engineering
Construction Engineering

Key technical challenges

  • The primary tower structure consists of a composite slab and beam structure. Due to the long beam spans and thin slab, extensive analysis for footfall vibration was required to ensure the structure achieved code requirements and client expectations.
  • Working with the existing structure and developing design solutions that strengthened rather than demolished.
  • Extensive co-ordination with the mechanical engineer to develop a strategy that minimised beam penetrations and beam notches.
  • Differential shortening analysis with consideration of mega truss, steel structure, concrete structure and existing structural elements

Environmental performance

  • 5 Star Greenstar
  • 5 Star NABERs Energy and 4 Star NABERs Water ratings.

Significant and interesting aspects of the project and Robert Bird Group’s role include the following:

  • The building features a central core utilising only the external ring of the core and the external building frame for lateral stability. This solution offered maximum flexibility in core planning for the multi-use tower together with simplicity in construction.
  • Detailed analysis and innovative temporary works structures allow the lift and stair core to span over alluvial deposits from an ancient creek bed, a heritage drain structure and the principal telecommunications trunk main connecting Brisbane and Sydney.
  • Detailed 3D stress analysis and produced documentation that allowed the builder to form and construct the columns with a structurally efficient and simple reinforcement layout.

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