Variable geometry stadium for football or athletic events has deep pit in center between rows of seats, containing platform supported on tops of tanks which float when pit is filled with water

摘要

The tanks (12) may be divided into several compartments and may rest on the horizontal floor of the pit (10) when the water is pumped out. There is a small clearance between the sides of the assembly of tanks and the vertical sides of the pit. When the tanks are in its lowermost position, lower rows of seats (22) may be extended over the running track which forms the outer rim of the platform. The center part of the platform is used as a playing field (6) for Soccer, Rugby Football etc. When the water is poured in, and the platform is raised, the lower rows of seats are stowed away under the walkway (26) between the lower and upper (20) rows of seats.