Question: What is the degree of slope of the Capital Gate Tower
About the article "Leaning Tower of Pisa", section "Alternative candidates".

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Two German churches have challenged the tower's status as the world's most lop-sided building: the 15th-century square Leaning Tower of Suurhusen and the 14th-century bell tower in the town of Bad Frankenhausen.
"Guinness World Records" measured the Pisa and Suurhusen towers, finding the former's tilt to be 3.97 degrees.
In June 2010, "Guinness World Records" certified the Capital Gate building in Abu Dhabi, UAE as the "World's Furthest Leaning Man-made Tower".
The Capital Gate tower has an 18-degree slope, almost five times more than the Pisa Tower; however the Capital Gate tower has been deliberately engineered to slant.
The Leaning Tower of Wanaka in New Zealand, also deliberately built, leans at 53 degrees to the ground.
  The Capital Gate in Abu Dhabi – “World’s furthest leaning man-made tower.” (2010)  
The Leaning Tower of Suurhusen () is a late medieval steeple in Suurhusen, a village in the East Frisian region of northwestern Germany.
According to the Guinness World Records it was the most tilted tower in the world, though in 2010 the newly erected Capital Gate tower in Abu Dhabi claimed this record.
The Suurhusen steeple remains the world's most leaning tower that is unintentionally tilted, beating the world-famous Leaning Tower of Pisa by 1.22 degrees. 
Capital Gate, part of the Capital Centre complex, is a 160 metre, 35-storey tower thats built next to the Abu Dhabi National Exhibition Centre which incorporates a slanting-core concept to feature an 18-degree westward lean.
It includes of office space and house Abu Dhabi's first Hyatt hotel.
The tower is linked directly to the exhibition venue as well as a 2.4 km Marina Zone currently under development.
In November 2009, the tower topped out its central core and reached its final height of .
Capital Gate is the house of Abu Dhabi's second Hyatt hotel – Hyatt at Capital Centre, a presidential style luxury five-star hotel, which has 189 rooms.
In June 2010, the Guinness World Records certified Capital Gate as the “World’s furthest leaning man-made tower.” The new record shows that the Capital Gate tower has been built to lean 18 degrees westwards; more than four times that of the world famous Leaning Tower of Pisa.
Investigation and evaluation, which was made by a Guinness appointed awards committee, started in January 2010, when the exterior of the 160-metre (524.9 ft), 35 storey tower was completed.
The Capital Gate project was able to achieve its record inclination through a special engineering breakthrough that allows floor plates to be stacked vertically up to the 12th storey and staggered over each other by between 300mm to 1400mm, which allows for the towers dramatic lean.
The tower features other innovative construction techniques including the world’s first known use of a ‘pre-cambered’ core.
The technique utilizes 15,000 cubic metres of concrete reinforced with 10,000 tons of steel.
The core, deliberately built slightly off centre, has straightened as the building has risen, compressing the concrete and giving it strength, and moving into (vertical) position as the weight of the floors has been added.
Capital Gate was designed by international architectural firm RMJM.
Capital Gate houses the 5-star Hyatt Capital Gate hotel as well as approximately 20,000 m2 of premium office space.
Project management and handover of all the restaurants, show kitchens and foodservice areas were overseen by a Dubai based hospitality foodservice design firm. 
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