The cable-net roof structure is a key feature of this stadium redevelopment project. The final design is a lightweight looped cable structure with an outer compression ring and two inner tension rings. The new multi-purpose stadium can seat 62,062 and will also host NFL games.
This is an impressive stadium containing many dramatic long span solutions. The judges were impressed by the ingenuity shown by the structural designers in dealing with very challenging constraints and project requirements.
The roof is a complex lightweight cable-net structure with an external compression ring and two internal tension rings. Horizontal loads and uneven loading conditions are carried by geometrical stiffness only, thus optimising the primary structural members to a minimum size and achieving the desired lightness and transparency.
In addition to the roof, the concrete stands also incorporate long spans for various reasons, including the accommodation of the entire retractable pitch which slides back under the south stand when the stadium is in use for concerts and other events.
The attention to detail throughout is exemplary and is an excellent showcase for the structural engineer's art.