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Within Inca suspension bridges, which failure mode accelerated when daily thermal cycling weakened plant fiber?

A)Anchorage point tensile rupture
B)Cable strand abrasive wear
C)Decking plank shear fracture
D)Tower foundation seismic instability

💡 Explanation

Anchorage rupture accelerated due to thermal relaxation because temperature fluctuations induced cyclical stress which fatigued the plant fiber through creep until it underwent catastrophic tensile failure; therefore, anchor failure is the root issue, rather than deck shear only impacting usability.

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