1 Bligh Street Download PDF


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Height: Occupied
127 m / 417 ft
 
Height: To Tip
138.8 m / 455 ft
Height: Architectural
138.8 m / 455 ft
 
1 Bligh Street Outline
Floors Above Ground
28
Floors Below Ground
4
# of Elevators
17
Top Elevator Speed
6 m/s
Tower GFA
45,700 m² / 491,911 ft²
Development GFA
45,700 m² / 491,911 ft²
# of Parking Spaces
96

Facts

Official Name 1 Bligh Street
Other Names Space
Structure Type Building
Status Completed
Country Australia
City Sydney
Street Address & Map 1 Bligh Street
Postal Code 2000
Building Function office
Structural Material concrete
Energy Label 6 Star Green Star
Proposed 2006
Construction Start 2009
Completion 2011
Official Website 1 Bligh Street

Companies Involved

Owner Cbus Property; Dexus Property Group
Architect
Design ingenhoven architects
Architect of Record Architectus
Structural Engineer
Design Enstruct Group
MEP Engineer
Design Arup
Project Manager APP Corporation
Main Contractor Grocon
Material Supplier
• Elevator Otis Elevator Company; Schindler
• Paint/Coating AkzoNobel

About 1 Bligh Street

Instead of attempting to create an iconic new high-rise landmark in the heart of Sydney’s financial district, the client and design team of 1 Bligh Street desired to set new standards for site consciousness and sustainability. The new tower, located on a corner site in a densely packed district of the city, does not stand out as the tallest building in Sydney’s skyline, but instead has become well known as a welcoming and pleasant place to work that integrates well with its environment while responding directly to concerns of resource and material use.

Located at the convergence of Bligh, O’Connell, and Bent Streets, the client’s goals for the new tower were to create a flexible, efficient, and transparent design for the boxed-in site. Across Bent Street lies a public plaza, Farrer Place, to which the client hoped to preserve direct sunlight by minimizing shadows cast by the new tower. Two mid-rise, 19th-century buildings are situated adjacent to the plaza, allowing ample natural light to reach the site. However, the surrounding outdoor areas had become deactivated to public use because of the built-up and sterile nature of the business district.

In response to the site restrictions and client goals, the overall form of the building is elliptical and oriented to take advantage of the best Sydney Harbor views. The ellipse was formed in response to the Sydney grid and its termination, resolving the issue of converging street geometries. This shape also allows a dialogue with the surrounding buildings while preventing the area from feeling overly encompassed with built forms and allowing daylight to filter to ground level.

At its base, the tower is mostly open to the public, with only 40% of the overall footprint enclosed, providing an overhang for public activities. Under this canopy are a large staircase which also serves as an open public meeting spot, a children’s play area, and open-air café seating. This expansive civic space connects to the neighboring Farrer Place and has completely transformed the area, enlivening the precinct and encouraging activity.

Upon entering the ground floor of the tower, users are greeted by a soaring full-height, naturally ventilated atrium. This curvilinear space serves to bring daylight and fresh air into the core of the building, creating a unique experience for the balconies on the office floors. Eight of the tower’s fourteen lifts accessing the office floors are also placed within this atrium, each with glazed walls to provide a unique traveling experience through the light-filled space. A large winter garden with views of the harbor is located at level 15, and a large rooftop garden also provides views of the city and harbor, 28 stories above ground level.

The floor plates of the building, 1,600 square meters each, are highly efficient with a 92% net lettable to gross floor area ratio, while also providing a maximum amount of daylight to all areas. The elliptical shape minimizes distances to vertical transportation and amenities, and is 12% more efficient than rectilinear options in façade-to-floor area.

The exterior of the building is a double-skin glazed façade, which is externally ventilated to improve performance and also houses automated solar blinds to protect from direct sunlight. The façade system was designed to promote exterior views and daylighting while minimizing glare and solar heat gain. In addition, views and comfort for occupants are increased. As a significant contributor to the energy efficiency of the overall building, the façade has a shading coefficient of 0.15.

To achieve a Six Star Green Star rating, the tower also implemented several other key sustainable features. A hybrid tri-generation plant installed on the premises utilizes gas-fired power, absorption chillers, and solar-powered cooling to increase efficiency and minimize peak loads. The building is estimated to provide a 40% decrease in energy consumption over a comparable Five Star NABERS Energy Rated building.

A comprehensive blackwater treatment facility was also designed for the tower to use filtered sewer water from the municipal waste stream to flush toilets and provide makeup water for the cooling towers. This system provides 100,000 liters per day, reducing the demand on municipal potable water by 90%.

The materials used in the construction of the tower also contribute greatly to the sustainability of the building. Over 20% of the aggregate used in concrete was recycled material, and about 41% of the cement was replaced with industrial waste by-products, diverting them from traditional waste streams. Ninety percent of the structural steel has a recycled content of at least 50%. Lastly, all timber used was either recycled or from an FSC-certified source.

CTBUH Initiatives

Warm Weather Spaces Walking Tours 2015
17 Sep 2015 – Tour Report

Christoph Ingenhoven Explains the Necessity for High-Rises
12 Jun 2013 – Conference Video

Doha Tower Named Best Tall Building Worldwide
19 Oct 2012 – Awards Event Report

More Initiatives

CTBUH Initiatives Related to 1 Bligh Street

Warm Weather Spaces Walking Tours 2015
17 Sep 2015 – Tour Report
The CTBUH Urban Habitat / Urban Design Committee organized guided walking tours of 16 cities around the globe, focusing on urban habitats around tall buildings.
Christoph Ingenhoven Explains the Necessity for High-Rises
12 Jun 2013 – Conference Video & PPT
Christoph Ingenhoven presents his point of view regarding the necessity of high-rises in cities. He discusses a wide range of built projects, including one of the first ecological high-rises, the RWE…
Doha Tower Named Best Tall Building Worldwide
19 Oct 2012, Chicago – Awards Event Report
Doha Tower was recognized as the overall "Best Tall Building Worldwide" and "Best Tall Building Middle East & Africa" in the 2012 CTBUH Awards Program.
ingenhoven architects Presents on 1 Bligh Street
18 Oct 2012 – Awards Symposium Video & PPT
Sydney’s central business district was transformed by 1 Bligh Street’s elliptical tower, which offers tenants several ground-breaking technological advances. The centerpiece is Australia’s tallest…

Global News

One Bligh Street Receives Another Award
30 Nov 2012 – The CTBUH 2012 Best Tall Building in Asia &…

Documentary Chronicles the Ascent of 1 Bligh Street
10 Oct 2012 – Photography and communications firm Hyatt and…

Videos

Interview: The Success of High-Rises
12 Jun 2013 – Christoph Ingenhoven, ingenhoven architects

Why I am in Love with High-Rises
12 Jun 2013 – Christoph Ingenhoven, ingenhoven architects

Best Tall Building Asia & Australasia: 1 Bligh Street: Engaging the Environment
18 Oct 2012 – Bruce McDonald, DEXUS Property Group

More Videos

Videos Related to 1 Bligh Street

Videos Related to 1 Bligh Street

Interview: The Success of High-Rises
12 Jun 2013 – 2013 London Conference Interviews; Christoph Ingenhoven, ingenhoven architects
Christoph Ingenhoven of ingenhoven architects is interviewed by Jeff Herzer during the 2013 CTBUH London Conference at The Brewery, London. Christoph talks about why he…
Why I am in Love with High-Rises
12 Jun 2013 – Presentation at CTBUH 2013 London Conference; Christoph Ingenhoven, ingenhoven architects
Christoph Ingenhoven presents his point of view regarding the necessity of high-rises in cities. He discusses a wide range of built projects, including one of the first…
Best Tall Building Asia & Australasia: 1 Bligh Street: Engaging the Environment
18 Oct 2012 – CTBUH "11th Annual Awards"; Bruce McDonald, DEXUS Property Group; Christoph Ingenhoven, ingenhoven architects
Sydney’s central business district was transformed by 1 Bligh Street’s elliptical tower, which offers tenants several ground-breaking technological advances. The…
CTBUH 11th Annual Awards Dinner
18 Oct 2012 – CTBUH "11th Annual Awards"; Dinner 2012
The 11th Annual Awards Ceremony & Dinner was held in Mies van der Rohe's iconic Crown Hall, on the Illinois Institute of Technology campus, Chicago. The 2012 "Best Tall…
Interview: 1 Bligh Street
18 Oct 2012 – 2012 Awards Ceremony/Symposium Interviews; Bruce McDonald, DEXUS Property Group; Christoph Ingenhoven, ingenhoven architects
Bruce McDonald and Christoph Ingenhoven discuss the 12-year journey to make the 1 Bligh Street project a reality, as well as the details of the Best Tall Building Asia &…

Browse hundreds of other videos from Council events including conferences and interviews with prominent tall building professionals in the Video Library


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