Future Tallest Building in the World to Break Record for Highest Vertical Pumping of Concrete

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See also: Burj Dubai Opens as Burj Khalifa. The team behind the construction of Burj Dubai, on course to be the worlds tallest building on completion, is set to break the world record for the highest pumping of concrete.

Artist's Impression of the Future Tallest Building in the World - the Burj Dubai - click to enlarge

Burj Dubai developers Emaar Properties is confident the record for pumping concrete vertically, which currently stands at 448 metres, will fall within the next few months. The present record is held by the 508-metre-high Taipei 101 building in Taiwan.

The Burj Dubai currently 119 levels and over 400-metres high and is on course to replace Taipei 101 as the worlds tallest building.

To date, 267,426 cubic metres of reinforced concrete and 49,684 tonnes of reinforcing steel have been used in the construction of Burj Dubai, the final height of which remains a closely guarded secret.

Usual surveying techniques using lasers to monitor the verticality of the structure were not viable in the case of the Burj Dubai due to lasers limited range of around 400 - 500 metres. Instead the Burj Dubai construction team is using GPS for this purpose.

The team is also using airlocks to combat the chimney effect, which typically affects very tall buildings with high contrasts between interior and exterior temperatures. If left unremedied, the cool air inside the building during Dubais hot summer months would sink creating high pressure at the bottom and causing problems such as stuck doors and whistling sounds, however airlocks prevent this by controlling airflow.

Greg Sang, Assistant Director - Projects, Emaar Properties has worked on the Burj Dubai project for two-and-a-half years and previously was part of the team constructing the tallest building in Hong Kong, the 420-metre-high Two International Finance Centre.

Its always exciting to create landmark buildings, something which becomes an icon for a city, he said. Im lucky in the sense that my work involves creating something physical, and I get a great sense of satisfaction from being able to look back at a project and recall that I was involved in its creation.

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