Arthur Vierendeel and Thomas Pratt name two examples of these structures. The forces acting between the components of these structures can be found using Cremona diagrams. The number of members composing one of these structures must be greater than or equal to two times the number (-5[1])of joints minus the number of reactions. von Karman vortex shedding was initially blamed for the (*) failure of one of these structures, though the failure was later shown to be caused by (-5[1])aeroelastic flutter. (10[1])Many of these structures contain trusses to prevent buckling. A catenary is formed by the main cables in the suspension form (10[1])of these structures. (10[1])Resonance from the wind is often cited as the cause of the collapse of, for 10 points, what kind of structure that spanned the Tacoma Narrows Strait? ■END■ (10[1])