Project Dubai, United Arab Emirates

Burj Khalifa

Reaching new heights 

Activity: Buildings
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In the centre of Dubai stands the Burj Khalifa tower (formerly called Burj Dubai), the world’s tallest manmade structure. This impressive skyscraper, which reaches up to a record height of 828 m, is the focal point of the 500-acre mega-project 'Downtown Dubai' by Emaar Properties, described as the new heart of Dubai.

New standards require advanced technologies

The latest advanced technologies in wind engineering, structural engineering, structural systems, construction materials and methods were applied in order to build the tower. The materials were subjected to wind tunnel tests at hurricane speed (200 km/h) to make sure they would withstand all conditions. Flexible tubes and joints were used to enable some sway. The two most important challenges to achieve this project within the required target were the logistic organization of the vertical transport (materials, workers and waste evacuation) to achieve a construction cycle up to two floors per week and the pumping up of the concrete to the highest level possible (a world record of 585 m). In order to cope with the problem of placing concrete in high temperature conditions (up to more than 45°C), special concrete mixtures were developed and poured mainly during the night.

Tower of records

The Burj Khalifa is the tallest building in the world according to the three main criteria of the Council on Tall Buildings and Urban Habitat (CTBUH): 'Height to Architectural Top', 'Height to Highest Occupied Floor' (at 550 m) and 'Height to Tip'. Other world records for the Burj Khalifa include the highest residential floor (550m), the highest outdoor observation deck in the world, at the Top on Level 124 and the tallest service elevator, which travels to a height of 504 m. At the peak of the construction works in 2009, more than 12,000 workers and staff were on site every day. Six Construct was the first contractor to pump up concrete to a height of 585 m. 

Project details

Project name

Burj Khalifa

Location

Dubai, United Arab Emirates

Client

Emaar Properties

External partner(s)

Samsung C&T - Arabtec

Stakeholder(s)

Six Construct

Building Period

2004 - 2009

Maintenance by

Cofely BESIX Facility Management

Maintenance period

2009 - 2014

Architect

Skidmore, Owings & Merrill

Project Website

Burj Khalifa

Area(s) of expertise

High Rise

Total value

$ 930 million

Height

828 m

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