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← HistoryWhich risk increased while building Inca suspension bridges across gorges using only natural fibers?
A)Cable failure due to creep✓
B)Increased abutment compressive stress
C)Deck sway from vortex shedding
D)Pylon collapse from buckling
💡 Explanation
Cable failure arises with natural fibers due to creep causing progressive elongation under constant tension. Therefore, cable strength decreased over time because the time-dependent deformation accumulated rather than sudden rupture, unlike with steel cables which were unavailable to Inca engineers.
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