Which limitation affects Inca suspension bridge suitability during seismic activity?

💡 Explanation

Inca bridges experience significant vertical movement during earthquakes; seismic waves induce a natural frequency resonance, amplifying oscillations because of the structure’s flexibility and length, rather than cable failure. Therefore, the outcome is vertical oscillation, rather than collapse via tension.

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• Which outcome occurred when Inca stonemasons employed interlocking techniques and poorly-drained foundations for suspension bridge towers?
• Which risk greatly increases when using plaited-rope suspension bridges lacking additional support?
• When using bronze ploughs against clay-rich Mesopotamian soil, which risk prematurely limits efficiency?
• Which functional error emerged gradually due to differential thermal expansion impacting the astrolabe alidade alignment?
• Which outcome results when excessive humidity permeates Byzantine glass tesserae?