Engineering marvel unveiled: Kai Tak Sports Park sets new standards in design and innovation

A venue like no other

Central to the park is the 50,000-seat Kai Tak Stadium, dubbed as the ‘Pearl of the Orient’. Designed to address Hong Kong’s humid sub-tropical climate, the stadium features one of the world’s largest retractable roofs and a flexible pitch surface, allowing the venue to host a variety of events in any weather. 

Project

Kai Tak Stadium

The retractable roof, weighing nearly 4,800 tonnes, operates quietly and can open or close in just 30 minutes using advanced mechanisms similar to railway technology. To support this massive roof, Arup engineered a bespoke structure with four mega trusses spanning between 150m to 180m, anchoring on four bearing-free reinforced concrete towers at the corners to ensure an unobstructed view for every spectator. Building information modelling (BIM) was fully adopted to optimise the structural design, ensuring constructability and minimising steel use.

Given the stadium’s proximity to residential areas, the retractable roof is acoustically sealed when closed, using sound-proof barriers and heavy cladding panels to dampen low-frequency sound, making the stadium one of the most efficient soundproofing sports facilities in the world. 

Spectator experience redefined

The stadium boasts a pioneering air-conditioning system activated when the roof is closed. This system adopts a bowl cooling method with individual outlets beneath each seat, circulating cool air in spectator areas without having to cool the entire stadium.  This approach optimises spectator comfort while enhancing energy efficiency.

The successful implementation of this system is a result of the meticulous coordination and integration between structural and MEP engineering. Advanced precast construction techniques have been used alongside an innovative multi-trade integrated MEP (MiMEP) design approach, setting high standards in both functionality and sustainability.

Seamless accessibility for visitors

Pedestrian access to KTSP is seamlessly integrated at the podium level, ensuring safe and convenient visitor movement without the need to cross busy roads. The facilities throughout the park are interconnected through thoughtfully designed paths and walkways, enhancing the visitor experience.

Arup’s total engineering services for KTSP extend to the 10,000-seat Kai Tak Arena, the 5,000-seat Youth Sports Ground, and various retail and leisure spaces.

Working in close collaboration with the Culture, Sports and Tourism Bureau, Kai Tak Sports Park Limited, Hip Hing Engineering Co. Ltd, Populous, Simon Kwan & Associates Ltd., and ADI Limited, Arup provided civil, structural, geotechnical and building services engineering, as well as traffic, fire engineering, façade, acoustics, audio-visual, sports lighting, advanced digital engineering, security, environmental and sustainability consulting.