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200 George Street Project Cover
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography

200 George Street

Sydney | Australia
Business Area
Exteriors
Brand
Permasteelisa
StatusCompleted
ARCHITECTFrancis-Jones Morehen Thorp (fjmt)
Ph.: Courtesy of Francis-Jones Morehen Thorp (fjmt)
The Concept

200 George Street is a landmark building amidst its plain looking neighbors. The rounded volumes are wrapped in a glazed envelope containing in-built timber lamellas that automatically adjust with the shifting sun, giving the whole building a dynamic, ever-changing appearance depending on the time of day, the season and the amount of sunlight. As a result, the office tower transforms from a completely transparent glass skyscraper through to a tower of golden-brown wood.

HEIGHT

155 m / 509 ft

37 stories tall

The play of warm soft light reflecting off and into the 37-stories has been made possible by the building’s façade, a state-of-the-art high-transparency glass skin whose double-glazed cavity contains motorized timber venetian blinds that adjust automatically with the changing angle of the sun’s rays. In the podium, vertical timber shading elements provide further solar protection. Natural materials like wood and sandstone combine with cutting-edge technological features, like the customized glazed façades, to produce one of the most sustainable, avant-garde buildings in Australia. The building has obtained a 6 Star Green Star - Office As Built 3 rating - as well as a 5 Star Australian NABERS rating (Excellent performance).

Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
The Spirit

To have a building appear in that way,you really need to group the wood on the outside, which, of course, is extremely difficult to do. Or you need to sheet the building in a clear sheet of glass, and have the wood louvers tightly behind that, and then have the performance glazing behind that. So you get the multi-layered Closed Cavity Façade system being used on 200 George Street, a system that has not been implemented in Australia before now.

And in terms of the wood being in the closed cavity, it is the first time in the world this has been done to my knowledge.

 

Richard Francis-Jones, Francis-Jones Morehen Thorp (fjmt)

The Project
Scope of Work

Design & engineering, manufacturing and installation of around 20,000 sqm (215,300 sq ft) of mfree-SCCF façade with timber blinds within the cavity.

Ph.: Courtesy of Francis-Jones Morehen Thorp (fjmt)

Façade detail, typical tower façade.

Ph.: Courtesy of Francis-Jones Morehen Thorp (fjmt)

Façade detail, typical podium façade.

A special Closed Cavity Façade with timber lamellas

The mfree-SCCF (Moisture Free, Sustainable, Closed Cavity Façade) technology underpinning this project was developed by the Permasteelisa’s Group Innovation & Solutions Team, which had already successfully concluded other projects mainly in Europe. Adapting the technology to the completely different climate conditions of the southern hemisphere meant taking on board a whole raft of new factors - and uncertainties - that included a very special sun-shading system: in-built timber lamellas rather than traditional, externally placed blinds.

The mfree-SCCF units making up the façade comprise four special elements: a single outer sheet of low-iron extra-clear glass; a sealed closed cavity, ventilated by low volumes of dry air to prevent condensation and dust infiltration; movable blinds providing solar shading and glare protection; and an inner double-glazing unit of high performance insulating glass.

Ph.: Courtesy of Francis-Jones Morehen Thorp (fjmt)

Context Plan.

Ph.: Courtesy of Francis-Jones Morehen Thorp (fjmt)

Typical tower façade diagram.

Technical Details
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
200 George Street facade comfort in the built environment
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
200 George Street facade comfort in the built environment
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
200 George Street closed cavity facade detail
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
Ph.: Mirvac FJMT - Ph. Brett Boardman Photography
Facts & Figures

2015 Completion

A new breed of office tower with a warm timber and clear-glass façade

3,000 mfree-SCCF façade units

3,000 timber blinds within the cavity

415 exterior vertical timber sun-shading elements, for streetscape glare control

Maximum transparency, energy efficiency and occupant comfort

6 Star Green Star - Office Design 3

6 Star Green Star - Office As Built 3

5 Star NABERS Energy rating

OWNER: Mirvac and AMP Capital Investors Limited

DEVELOPER: Mirvac Projects

ARCHITECT: Francis-Jones Morehen Thorp (fjmt)

BUILDER: Mirvac Construction

Ph.: Permasteelisa Group
Ph.: Permasteelisa Group
Ph.: Permasteelisa Group
The Making Of

The exceptional quality and durability of the façade units were ensured by precision assembly of the various components at the manufacturing plant. The timber blinds with the attendant blind control system were placed inside the façade package when the unit was assembled at the factory, thus avoiding the risk of damage during transport or construction site assembly.

More Information

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