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

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