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in dollars) | architect = Rossman Schneider Gadbery Shay | project_manager = | structural engineer = | services engineer = | general_contractor = Sletten Construction Company | main_contractors = | seating_capacity = Volleyball, basketball: 9,000 American football: 5,500 | suites = | record_attendance = | dimensions = 189,000 ft.² Diameter 440 feet / 134 m | acreage = | tenants = }} The Round Valley Ensphere is a wood dome stadium in Eagar, Arizona, USA. It is owned by Round Valley High School and the Round Valley Unified School District. It is the only domed high school football stadium in the United States.〔Miner, Carrie. ''Off the Beaten Path Arizona: A Guide to Unique Places.'' p79. Google Books: ()〕 Opened in 1991–92 at a cost of US$11 million, the venue seats 5,500 persons for American football and 9,000 for basketball and volleyball.〔 The dome encloses a floor area of . ==History== In 1987, a $12 million bond for the dome and repairs was floated and passed after it was found that Tucson Electric Power, which operates a generating station in the area, would have to pay for $11 million of it. (Since the utility generates 90% of the property values in the area, it pays 90% of the property taxes.) TEP, at the time facing financial issues, sued to block construction, but trial and appellate courts rejected the lawsuit.〔 Construction began in the summer of 1990. It was forced to stop for three months for reinspection when two workers were hit by wooden beams and fell 75 feet to their deaths.〔 The dome held its first football match on October 11, 1991, featuring the Payson High School Longhorns.〔 The venue was closed in 2015 due to water damage and will remain closed for at least a year. The water damage was caused when heavy rains brought water into the building through the exterior doors.〔(RVUSD letter )〕 The damage to the synthetic turf in the facility produced elevated levels of mercury vapor, which require the facility to undergo professional remediation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Round Valley Ensphere」の詳細全文を読む スポンサード リンク
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