A $160 million premium residential, retail, and commercial development at the heart of the Haymarket precinct. The project consists of 540 apartments spread over three towers varying from 8 storeys to 40 storeys high linked by a common 5-story podium. Structural design features include constructing the building over existing heritage-listed Sydney Water culverts and multi-level transfer walls that eliminate the need for deep transfer beams over the podium car park.

Project Value:
$160 million
Year Completed:
Building Metrics:
Total Area:
30,600 m² GFA Residential
1,000m² GFA Retail
250m² GFA Commercial
Levels: 40 above ground
Environmental Performance:
4 Star Greenstar
4.5 Star AGBR

RBG Client:
Primary Contractor:
Denton Corker Marshall
Lend Lease Design
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.

Key technical challenges

RBG redesigned the steel plunge columns enabling complex bracing arrangements and programme hold-points to be removed, hence simplifying excavation and improving health and safety. The ground floor slab was redesigned for significant construction loads and to prop the basement wall whilst maintaining a large void to allow the core to rise.

RBG also checked all permanent works elements for the temporary loads induced by the innovative construction sequence. The construction method further reduced the ground movements, thereby minimising the risk to sensitive network rail facilities adjacent to the site.

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