Megastructures

Beijing Water Cube (2008x5)

Air date: May 21, 2008

Just in time for the 2008 Beijing Olympics, workers are feverishly putting the finishing touches on the National Aquatics Centre – the Beijing Water Cube. A stroke of design genius, this Olympic Megastructure is a steel honeycomb-like frame enclosed entirely by a unique skin, modelled after soap bubbles. Using 90 kilometres worth of steel in 22,000 beams following no conventional straight lines, the Beijing Water Cube must be topped with 100,000 square metres of bubbles. Looking for a truly unique covering, the design team focuses on ETFE – a light-weight plastic invented to protect spaceships from cosmic radiation. Among ETFE’s unique properties, dot patterns on its surface can trap solar energy in the winter and reflect solar energy in the summer, keeping the building cool. The Beijing Water Cube is the largest ETFE construction in the world, and because of its honeycomb-like structure, 3,500 ETFE bubbles must be cut individually, and sized. Factor in that the dimensions have been created in Germany and must be translated into a Chinese database and the Beijing Water Cube becomes a bit of a logistical nightmare. Beijing’s Water Cube represents a true morphing of molecular science, architecture and structural engineering.