|Dr. N. Subramanian
Joined: 21 Feb 2008
Location: Gaithersburg, MD, U.S.A.
|Posted: Mon Jun 07, 2010 1:37 pm Post subject: Leaning Towers of the World
|The Leaning Tower of Abu Dhabi
WORLD’S MOST LEANING TOWER REACHES HALFWAY POINT
A tower in Abu Dhabi has beencertified as the world's "furthest leaning manmade tower" by the Guinness WorldRecords, the Abu Dhabi National Exhibitions Company (ADNEC) hassaid.
The 160m tall Capital Gate Tower, which is being built by Abu Dhabi National Exhibitions Company (ADNEC), will lean 18 degrees westward -- over four times the angle ofItaly's famous Leaning Tower of Pisa. The design of the central core of the building, which slants in the opposite direction to the lean of the building, straightening as it grows, has never been attempted before.
It said that the tower earned the recognition afterrigorous evaluation by the Awards Committee since January, when the exterior ofthe 160-metre, 35-storey tower was completed.
CapitalGate's floor plates are stacked vertically up to the 12th storey after which,they are staggered over each other giving rise to the tower's dramaticlean.
The tower features other innovative construction techniquesincluding the world's first known use of a 'pre-cambered' core, which containsmore than 15,000 cubic metres of concrete reinforced with 10,000 tons ofsteel.
Both ADNEC and our partners have thoroughly enjoyed theopportunity to create an iconic structure which is not only distinctive inappearance but also extremely functional," said Ali Saeed Bin Harmal Al Dhaheri,ADNEC's Managing Director.
UAE is home to another world recordbuilding, the 828-metre Burj Khalifa in Dubai, which is the tallest building inthe world.
“When complete, Capital Gate will be a modern day icon for Abu Dhabi, recognizable throughout the world. Capital Gate is not about being the biggest or the tallest, it is about advanced technical ingenuity and aesthetic splendor,” said Simon Horgan, ADNEC Group CEO. “This is one of the most challenging buildings under construction in the world at the moment but due to the partnership between ADNEC, RMJM and all contractors on the project, ground breaking solutions are being designed on a daily basis.”
A gigantic internal atrium, including a tea lounge and swimming pool suspended 263 feet above the ground, has been constructed on the 17th and 18th floors, the halfway point of the 35-story, 525-foot tall tower. This milestone offered the designers their toughest architectural challenge and it is at this point that the unique lean of the structure becomes evident.
Because of its unique posture, the 35-story Capital Gate is being constructed on top of a 7-foot-deep concrete base with a dense mesh of reinforced steel. The steel exoskeleton known as the diagrid sits above an extensive distribution of 490 piles that have been drilled 100 feet underground to accommodate the gravitational, wind and seismic pressures caused by the lean of the building.
Capital Gate will house Abu Dhabi’s first Hyatt hotel – Hyatt at Capital Centre, a presidential-style luxury, 5-star hotel and will provide 200 hotel rooms for Abu Dhabi and will serve ADNEC’s visitors and exhibitors as well as international business and leisure travelers.
The iconic tower will be the centerpiece of the Capital Centre development, an AED8 billion ($2.2 billion) business and residential micro city being constructed around the thriving Abu Dhabi National Exhibition Centre.
Other Leaning Towers of the World
A leaning tower is a tower which, either intentionally, due to errors in design, construction or to subsequent external influence, does not stand perpendicular to the ground. The most famous example is the Leaning Tower of Pisa in Italy.
Leaning Tower of Pisa, the most recognized leaning tower
Leaning Tower of Suurhusen, the world's most tilted tower
Leaning Tower of Niles, a modern replica of the one at Pisa, Illinois, USA
The Huqiu Tower in Suzhou (Jiangsu), China
The Huzhu Tower of Tianma Mountain near Shanghai, China
Qianwei's Leaning Tower in Suizhong County (Liaoning), China
The deliberately tilted Iron Tower of Yuquan Temple (Hubei), China
A clock and water tower in the Teluk Intan town in Perak, Malaysia
The Asinelli and Garisenda towers in Bologna, Italy
The tower of the Oude Kerk in Delft, the Netherlands
The Oldehove in Leeuwarden, the Netherlands
The southeast tower of Caerphilly Castle in Wales
The Albert Memorial Clock in Belfast, Northern Ireland
The Metzgerturm in Ulm, Germany
The Reichenturm in Bautzen, Germany
A short church tower in Suurhusen, Germany (the "most leaning tower in the world" till now,according to Guinness World Records)
The Krzywa Wieza (Leaning Tower) in Torun, Poland
The Baszta Sowia (Owl's Tower) in Pyrzyce
The Leaning Tower of Nevyansk, Russia
The Söyembikä Tower in Kazan, Russia
The Campanile of San Martino church on the island of Burano, Venice, Italy
The Campanile of San Giorgio dei Greci in Venice, Italy
The tower of the Temple Church in Bristol, England
The Greyfriars Tower - the remains of a Franciscan monastery in King's Lynn, England. Nicknamed 'The Leaning Tower of Lynn' in reference to the Leaning Tower of Pisa.