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← HistoryWhich risk dramatically increased when medieval suspension bridges exceeded span length limits?
A)Rope tensile strength degradation✓
B)Tower foundation shear stress
C)Cable aerodynamic vortex shedding
D)Deck material galvanic corrosion
💡 Explanation
Rope degradation accelerates due to CREEP, because sustained load exceeding a threshold causes polymer chains to disentangle, leading to failure; therefore tensile strength falls, rather than shear failure since that requires different loading, and corrosion affects deck material, not ropes.
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