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1 Bligh Street Wins The International Highrise Award 2012

1 Bligh Street Arup

Project: 1 Bligh Office Tower
Designed by Ingenhoven Architects
In Collaboration With: Arup
Client: Dexus Property Group
Location: Sydney, Australia
Website: &
Ingenhoven Architects and ARUP share with us the news of receiving the first prize at the International Highrise Award 2012 for their design of 1 Bligh Office Tower in Sydney at the award ceremony held in Germany. Discover more of the project after the jump:

1 Bligh Street Arup1 Bligh Street Arup

About the Project:

1 Bligh Street, Sydney’s first 6 Star Green Star high-rise building, won the International Highrise Award 2012 during a ceremony which took place in Paulskirche in Frankfurt.

Designed by Germany's Ingenhoven Architects and Australia’s Architectus, the 139-meter-tall and 30 floors elliptical tower was chosen from 26 competitors from 17 countries.

Meshing design and engineering skills, Arup engineering services helped transform a bold architectural idea into a functional building through a close collaboration between German and Australian offices and involving a wide range of services, from façade, electrical and mechanical engineering, through to fire engineering, lighting design and specialist steelwork structures.

Opened in September 2011, this AU$270m structure is a unique landmark in Sydney.

Innovative features include an automated ‘double-skin’ glass façade, a naturally-ventilated 30-storey atrium, and highly-efficient mechanical cooling systems. Through a range of integrated, environmentally-sustainable solutions, the 42,000m2 building is designed to target a 5 Star NABERS energy rating.

New face in town

1 Bligh Street features the first use of a double skin façade on this scale in Australia. The highly effective façade adapts to ever changing solar conditions at each orientation to minimise the solar penetration to the floor and control direct glare. This allowed the use of very clear glass, creating a building which is very transparent from the outside looking in, and from the inside looking out.

The team took a cold-climate, European-inspired façade design and adapted it for Sydney’s hot, sunny environment.

“From the innovative operable double skin façade wrapping the tower, to the 135m tall naturally ventilated central atrium extending from the ground floor wintergarden up to the glazed skylight overhead, the attention to detail is obvious throughout to create an office space of unrivalled quality.” Kerryn Coker, Arup’s façade engineering specialist.

The building has been achieved through the collaborative efforts of Arup, Enstruct, Cundall, Architectus + Ingenhoven Architects, and Grocon on behalf of the client and building owner, DEXUS Property Group, Cbus Property and DEXUS WPF.

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