Sheraton Hotel (27 Little Collins Street), is a 32-storey mixed use development at the busy end of the Melbourne CBD. It comprises 142 residential apartments and a further 44 luxury residences and penthouses in the top six floors of the tower, a new 5-star international brand hotel with approximately 175 guest rooms and suites, and three levels of basement car parking.

The 32-storey tower has been designed to create an iconic predominately glazed sculptural form of highest quality architectural design on Melbourne skyline. The residences and penthouse showcase the ultimate standards of interior design, with distinctive areas of timber and marble floors and generous living bathroom/balcony spaces.

Year Completed:
2013
Building Metrics:
32 Levels above ground
3 basements
Sectors:
Hotel
Commercial

Client:
Golden Age Development Group
Primary Contractor:
Equiset Construction
Architect:
The Buchan Group
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.

Technical Challenges

During design and construction of the project RBG design team faced and successfully resolved the following technical challenges:

  • Retention system against existing 13-storey bricks “Coats’ building at the southern side of construction site presented a technical challenge due to presence of existing underpipping structure against the “Coates” building.
  • Top-down construction using temporary concrete piles in locations different to permanent columns. Temporarily piles were removed after installation of permanent columns.
  • Builder’s request to use metal trays as formwork for typical tower floors designed as flat plates presented a major technical challenge. It was overcome by combining metal trays with conventional formwork.
  • Forming up and constructing 3.5 meters long cantilevers on levels 26 to 31 protruding above the lower levels on both northern and southern side of the building presented a major construction challenge.

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