Slender Towers - Challenges and Opportunities

Winnie Kwan
Partner
Leslie E. Robertson Associates, Hong Kong

The ONE was constructed on a narrow site within a congested area of Hong Kong. At 172 meters, it is the tallest all-retail building in the world. Besides its height, a unique feature of the building is its slenderness ratio at 1 to 9, which is necessitated by site constraints. This presentation surveyed the trend for tall buildings to reach ever-increasing slenderness ratios due to the congested urban environment. Using case studies ranging from the ONE retail building in Hong Kong, to luxury residential towers in New York and in Hong Kong, to a unique office tower in Kuala Lumpur, the presentation examined the opportunities and structural challenges associated with slender towers, and explored the measures which have been adopted to mitigate and to overcome these challenges.

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