With a total height of 829.8 m and a roof height of 828 m, Burj Khalifa is currently the tallest building in the world, holding this record since its topping out in 2009.

Originally named Burj Dubai, the tower was renamed in honor of Khalifa bin Zayed Al Nahyan, the ruler of Abu Dhabi and president of the United Arab Emirates.

This iconic skyscraper quickly became a symbol of Dubai’s ambition to transform into a global tourist hub and gain international recognition.

Structural System

The tower’s structure consists of reinforced concrete construction from the foundation up to Level 156. Above Level 156, the structure transitions into a steel-braced spire. The construction required 330,000 m³ of concrete and 55,000 tons of steel rebar.

The foundation system is a piled raft, consisting of a 3.7 m thick raft supported by 1.5 m diameter bored piles, each extending 50 m below the raft base.

Dextra’s Contribution

Extensive pile load tests were conducted on the tower’s foundation. Additionally, Crosshole Sonic Logging (CSL) testing was performed to ensure the integrity of the concrete foundation, using 20 km of Dextra ソニテック tubes.

ソニテック is a fast, simple, and reliable solution for CSL testing, compliant with ASTM D6760, the standard for ultrasonic cross-hole integrity testing.

Moreover, more than 100,000 バーテック couplers were supplied for the piled-raft extension and reinforcement.