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← HistoryDuring floods, which outcome resulted in historical braced Inca rope bridges made from plant fibers?
A)Increased tensile load capacity
B)Catastrophic bridge collapse✓
C)Elevated deck vibrational frequency
D)Reduced wind-induced oscillations
💡 Explanation
Historical Inca bridges faced collapse during river swells because high discharge increased drag force. Material failure propagated from weakened cables via increased shear stress in connection points; therefore bridge collapse, rather than other failure modes, was most likely because of cable overload.
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