Australia 108 is an exhilarating new development perfectly positioned within Melbourne’s most desirable arts, dining and entertainment precinct at 70 Southbank Boulevard. The tower is 320 meters tall, making it the tallest residential building in the Southern Hemisphere.

It has been created by the team that successfully delivered the iconic Eureka Tower.

Australia 108 will comprise over 1050 apartments with associated amenities and car parking.

The iconic “StarBurst” will house premium facilities including two pools, cinema and private dining facilities.

The top levels will be premium penthouse apartments with breathtaking views of Melbourne and Port Phillip Bay.

Project Value:
AUD $800 million
Year Completed:
Anticipated 2019
Building Metrics:
Total Area/ (GFA): 138,000m² approx
Levels: 100
Sectors:
Residential

Client:
World Class Global
Primary Contractor:
Multiplex
Architect:
Fender Katsalidis Architects
Robert Bird Group Services:
Structural and civil engineer, Temporary Works engineering, EXVIZ 3D imaging/ construction sequence visualisation

Key Technical Innovations

Change to coupled precast columns – quicker floor cycle times typically:

  • Saving of 1 day per floor cycle.
  • No puddle pouring of high-strength concrete on-site
  • Full coupling of column reinforcement.
  • Less reinforcement via removal of bar lapping.
  • QA improvement of shrinkage and concrete grade characteristics.
  • Advanced Grouting Technology (NMB couplers from Japan can achieve 150MPa strength).
  • Improved axial shortening adjustments on-site1

Integration of temporary works and permanent works designs for Starburst levels:

  • EXVIS visualization of construction sequence (useful for Client and Builder alike)1
  • Steelwork used for both temporary and permanent design – less erection / clean-up, multi-use.
  • Temporary worker protection screens at StarBurst edges which hang 10m outboard of structural floors.

Structural feature

  • The key structural system used in this 320m tower is a concrete core and outriggers to mega column and mega frame.
  • Floors are flat plate two-way post-tensioned plates on a ring pattern of columns and mega columns. Lateral stability and acceleration control are a key design element, thus a liquid column damping system is provided on the 98th Level.
  • Complex ‘StarBurst’ construction sees amenity zones cantilevering over 8m.
  • Building façade access is by way of a main crane housed at the roof with supplementary systems housed under the ‘Star Burst’ zone.
  • Carparks are concealed behind a pattern of cantilevered planters.
  • Large diameter piles are used to support the structure; these are found more than 40m below ground level.

Key Technical Challenges

Outrigger design using ultra high strength reinforcement (MACALLOY and SAS bars) embedded within core and columns.

Staged erection of outrigger to core walls: connection of high strength reinforcement through core and outrigger walls which are poured weeks apart.

StarBurst amenity area:

  • 4 levels of floors cantilevering 8m outboard of main structure – 200m above ground level.
  • Pools at edge of cantilevering structure creating large overturning forces on building; additional wind area.

Liquid Column Dampers:

  • Large mass (circa 200,000-300,000L of water) some 300m above ground.
  • Structural support of liquid columns via series of inter-connected walls and slabs.
  • Wave formation in LCD’s generated via building movement.

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