Which structural risk increased with the construction of longer steel suspension bridges in the late 19th century?

💡 Explanation

With longer spans, the natural frequency of steel suspension bridges decreased, increasing susceptibility to wind-induced resonance because lower frequencies are more easily excited. Therefore, tower collapse from wind resonance risk increased, rather than corrosion, buckling, or liquefaction which are influenced by material properties, temperature gradients and soil conditions, respectively.

• Which stability risk increased during the construction of Roman roads across marshy terrain?
• Which risk increases when seasonal silt deposition reduces Mesopotamian canal flow capacity?
• Which mechanical action describes the primary contribution of torsion springs in a Roman ballista?
• Which risk increases when arsenical bronze ingots used for Mesopotamia tools are repeatedly reheated during forging?
• Which outcome arises when sighting through a medieval Islamic astrolabe aimed far from zenith?
• Which risk increased when cast bronze sickle blades replaced flint blades during the early Bronze Age harvests?