The Arena was designed for the CLO, which previously held productions at Pitt Stadium. The roof, which was supported by a arch, was free of internal support leaving no obstruction for the seats within. The roof, which had a diameter of , was divided into eight sections. Six of the sections could fold underneath two—in 2½ minutes—making the Civic Arena the world's first major indoor sports stadium with a retractable roof. A total of 42 trucks mounted on 78 wheels, 30 of which were individually driven, supported and moved the six moveable sections. The trucks, gear motors and 480-volt AC motor drive that moved the roof sections were designed and manufactured by Heyl & Patterson Inc., a local specialist engineering firm.