Australian construction company Multiplex has completed the fifth and final commercial office tower at Walker Corporation’s A$2.5bn ($1.8bn) Collins Square development located at 727 Collins Street in Melbourne’s central business district (CBD).
Collins Square, one of the largest commercial mixed-use developments in Australia, spans an entire city block and comprises five commercial office buildings with retail space providing more than 250,000m² of commercial space and 10,000m² of retail area.
The final A$168.5m ($121m) tower, consisting of 33 levels and a height of 117m, provides approximately 40,000m² of commercial office space and includes an integrated fit-out for the anchor tenant Transurban on levels 24 to 31.
Collins Square Tower 5, designed by architectural firm Woods Bagot, features high-quality office space with an architectural curved curtain wall façade, which provides a light-filled office floor plate.
The tower connects to the foyers of the adjacent towers and is located above retail, public circulation spaces, car parking and end-of-trip facilities.
Multiplex Victoria regional managing director Graham Cottam said: “We are proud to deliver the final tower at Collins Square, completing this premier commercial precinct for Melbourne.
“The smooth delivery of this major project is a reflection of our on-going collaboration with Walker Corporation, which has seen Multiplex deliver the last four towers at Collins Square.”
The company had to ensure construction of the tower above a seven-level operational commercial carpark and structural and service integration with the adjacent Tower 4 without any interruption to existing tenants.
The Tower 5 features innovative design features, such as a curved architectural curtain wall system and curved structural steel roof to prevent overshading of Southbank.
The building also includes destination-controlled lifts with Bluetooth technology, allowing occupants to access and control the elevators through mobile phones.
Work on Tower 5 commenced in April 2017 and 1,973 people worked on site throughout construction.
Collins Square integrates commercial office space with retail on Collins Street. The precinct forms a key ‘bridge’ between Melbourne’s two major commercial centres, the CBD and Western Precinct.
The redevelopment of Collins Square began in 2010 and includes the refurbishment of the Goods Shed, which has been in existence at Melbourne Docklands for more than 120 years.
The precinct also includes retail and dining space, childcare facility, supermarket, health and wellbeing and general services.
The Collins Square development has achieved a Green Star Design and As Built v3 rating, as well as a minimum NABERS Energy 5 Star rating due to its tri-generation system for producing power, along with the rainwater harvesting system and water-efficient fixtures and fittings.
The company claims that the precinct also has the highest concentration of environmentally sustainable buildings in the Southern Hemisphere.
Image: The Collins Square development in Melbourne’s central business district. Photo: Courtesy of Multiplex.