MLC Centre

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Height: Architectural
228 m / 748 ft
MLC Centre Outline
  Height: To Tip
244 m / 801 ft
Floors Above Ground
Floors Below Ground
# of Elevators
Top Elevator Speed
7 m/s
Tower GFA
100,000 m² / 1,076,391 ft²


Official Name MLC Centre
Structure Type Building
Status Completed
Country Australia
City Sydney
Street Address & Map 19 Martin Place
Postal Code 2000
Building Function office
Structural Material concrete
Construction Start 1972
Completion 1977
Rankings Click arrows to view the next taller/shorter buildings
Regional Ranking #23 Tallest in Oceania
National Ranking #23 Tallest in Australia
City Ranking #5 Tallest in Sydney

Companies Involved

Design Harry Seidler and Associates
Main Contractor Civil and Civic
Material Supplier
• Elevator KONE

About MLC Centre

Australia’s tallest building and the second tallest concrete building in the world upon completion, MLC Centre was conceived with a number of design features which were initially developed for construction of Australia Square. The MLC Centre, like Australia square is set back on a plaza, with the tower’s non-rectilinear footprint occupying only 20 percent of the entire site area. By placing the tower on the southern end of the site, the building could avoid an underground railway while also providing for an outdoor public plaza best positioned to receive natural sunlight.

The MLC Centre is octagonal in form, based on a square plan aligned diagonally to street grid and then chamfering the corners. The form provided for a footplate with a larger area than a typical rectilinear building, but more efficient spatially with interiors having better access to natural light and views, while also reducing the amount of wind loading on the overall tower. Like Australia Square, MLC Centre utilizes a series of tapering large external columns surrounding the building’s perimeter, except here the columns tapper completely until they become flush with façade at the top of the building. Also like Australia Square, the construction process utilized quartz concrete set into pre-cast units of standardized sizes and used not only as a finish of the exterior façade, but also as formwork for the pouring of the reinforced concrete structure, assisting in shorting the construction schedule as the building rose at an average rate of one floor every four days. The façade was then composed of recessed windows and textured concrete spandrels provided for passive solar shading. After completion, MLC Centre held the title of Australia’s tallest building for nine years, until it was surpassed by the Rialto Towers in Melbourne.

CTBUH Initiatives

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


Retrofit and Refurbishment of Existing Tall Buildings
19 Sep 2012 – Paul Sloman, Arup

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