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← HistoryWhich consequence follows if an Inca rope bridge anchorage undergoes increased tensile stress?
A)Bridge deck catenary arches downwards
B)Rope fibers experience plastic deformation✓
C)Lateral oscillation decreases noticeably
D)Torsional resonance becomes highly audible
💡 Explanation
Anchor failure increases sharply because exceeding the stress limit causes plastic deformation of the rope fibers. This is because yielding occurs before complete rupture, therefore permanent elongation results, rather than immediate structural collapse.
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