Packet 5: Tossup 4

A form of these structures which use a trunnion to move their leaves are their “bascule” type. Aeroelastic flutter can damage a type of these structures (15[1])that can (15[1])be self-anchored (15[1])or earth-anchored. A type of these (-5[1])structures, (-5[1])which have stiffening girders and hangers, (15[1]-5[1])can be constructed (15[1])with minimal falsework. (-5[1])A fan of cables under tension connects the (*) deck to a central (10[1])tower (10[1])in the “cable-stayed” type of these (10[1])structures. (10[3])Two cables (10[1])which form a catenary between two towers (10[1])support a form of these structures (10[3])with a long span. (10[1])Viaducts (10[2])are a type of, (10[1])for 10 (10[1])points, (10[1])what structures with “suspension” (10[1])and “arch” types, (10[1])often used to cross rivers. ■END■ (10[2])

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