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Which 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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