Foundation works completed at Kingdom Tower

Foundation works completed at Kingdom Tower

Raft piling works for the world’s next tallest building, Kingdom Tower, in Saudi Arabia, has been completed.

Jeddah Economic Company (JEC) has announced that the 12-month long foundation work project is finished, clearing the way for construction work to begin on the site next week, as revealed earlier this week by CWOnline.

Kingdom Tower, which is the focal point of the new Kingdom City, is to rise more than 1,000 metres and will be built on an area of 85,000m2 at an estimated cost of more than $1.5bn.

JEC achieved new world records using latest technologies for high rise buildings' foundation construction - 270 piles were cast in situ reaching 105m below the natural ground level and with diametre that varies between 1.5–1.8m.

The raft is considered one of the world's largest one-piece reinforced steel foundations with thickness ranging between 4.5–5m.

Both piles and raft are supported with anti-corrosion technologies to preserve the steel reinforcement using a constant electric current system known as the Cathodic Protection.

In addition, strain gauge instrumentation and load cells have been built-in to detect any changes in the soil and provide continuous readings about any environmental changes to the area around the foundations.

Finally, earthing and lightning prevention systems were installed into the raft piling foundation.

Mounib Hammoud, CEO of JEC, stated that work on the Kingdom Tower is now above the ground and construction work is moving at an accelerated pace and in accordance with the highest construction standards using the most advanced techniques.

He said: "Some of the techniques have been specified, such as the use of a high strength concrete reaching Cylinder Compression of 85MPa. The reinforced steel used is deformed bars Grade 60 and up to 40mm in diametre and with yield strength of 520 MPa.

"A further double height eight full refuge floors that are fire resistance will be allocated throughout the tower.

"The Kingdom Tower will be ahead of any other high rise building in the world with specifications surpassing what is usually required. The tower will have 58 high-speed elevators including the double-decker high-speed elevators reaching a speed of 12 metres/second, in addition to other distinctive features making the Kingdom Tower an iconic landmark that will be a source of pride for the Kingdom of Saudi Arabia and its people."

The Kingdom Tower features 170 stories, seven stories of which will be allocated for the five-star Four Seasons Hotel offering 200 rooms, eleven stories for 121 luxury serviced apartments, and seven stories for offices.

The tower will also have 61 stories that include 318 housing units of various types, a gym, spa, cafes and restaurants, several sky lobbies and world's highest observation floors located on the top floors 660m high enabling visitors to view the city of Jeddah from the sky.

Located on an area of more than 5.3mn m2, the Kingdom City will provide a contemporary lifestyle environment supported by an integrated advanced infrastructure.

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