Engineering design for tall buildings recognised

Jerman Cheung Jerman Cheung East Asia Press Office,Hong Kong
8 March 2021

Arup enjoys a tremendous success at this year’s CTBUH Awards. A total of 12 Arup projects in Asia have been named as Awards of Excellence winners.

Organised by the Council on Tall Buildings and Urban Habitat (CTBUH), the awards programme honors projects that have made extraordinary contributions to the advancement of tall buildings and the urban environment, and that achieve sustainability at the highest and broadest level.

Our engineering designs for CITIC Tower and Raffles City Chongqing – the tallest buildings in Beijing and Chongqing – were awarded in multiple categories.

Arup acted as the structural and geotechnical engineer for this iconic landmark. We engineered a highly efficient tube-in-tube structural system composed of perimeter mega structure and reinforced concrete core which significantly increased our design efficiency in delivering a safe, cost-effective and sustainable structural solution to our client. We also provided fire and security consultancy, optimising evacuation provisions and conducting complex fire analysis to ensure the robustness of the building under fire conditions.


Citic Tower (Z15, China Zun), Beijing © Li Wentao Architecture Photography Citic Tower (Z15, China Zun), Beijing © Li Wentao Architecture Photography
CITIC Tower, Beijing © Li Wentao Architecture Photography
  • Raffles City Chongqing – Fire and Risk Engineering Award, Structural Engineering Award and Best Tall Building (300-399m)

Working with Safdie Architects, we addressed the structural challenges posted by the tower’s slenderness ratio over 9.4. We adopted four mega corner columns connected to the central core wall via diagonal outriggers and belt trusses. We tailor made a patented hybrid outrigger system using concrete walls, steel bracings and a structural ‘fuse’ to provide stability to the building against strong wind and earthquakes. Fire modeling analyses were also conducted for the Conservatory skybridge on top and podium levels to assess the evacuation provision and optimise the structural fire protection.

Raffles City Chongqing © CY Tang Raffles City Chongqing © CY Tang
Raffles City Chongqing © CY Tang

Other winning projects include:

We are involved in a total of 30 award-winning projects across the globe. The winners will be celebrated at Tall + Urban Innovation Conference to be held online in May 2021 and contest for the overall category winners.

To see the full list of Awards of Excellence winners, visit the CTBUH Awards page.