STADIUM PROVIDED WITH OPENING/CLOSING ROOF

摘要

PROBLEM TO BE SOLVED: To provide a field where turfs are planted with a sufficient sunshine and a favorable circumstance for growth and maintenance of the turfs. SOLUTION: Fixed roofs 16-18 are installed at least to cover the spectators seats 12-15 oppositely arranged at both sides of a nearly rectangular or elliptic field 11 where turfs are planted. An opening partitioned by the edges of the fixed roofs 16-18 is opened/closed by a movable roof 20. And reflection sheets can be suspended from the edges of the fixed roofs to reflect the sunlight to the field where the sunlight does not shine, while receiving the sunlight from the opened space.