The eastern wall of the British pavilion at the 1992 Expo in Seville provided the finest opportunity to date to exploit the roll wave phenomenon. A vast sheet of water, some 70 metres wide and 13 metres high, covered the entire surface of the wall. At the time this was possibly the largest example in the world of such a water feature. In addition to the water wall itself, visitors passed through two curtains of water jets as they crossed a bridge over the surrounding lake in order to enter the building.
The magnificent building, designed by Nicholas Grimshaw with Ove Arup as engineers, was entirely clad in glass with solar panels covering the roof. In fact, the water wall and other features were largely powered by solar energy from the roof panels.
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