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Which increased risk occurred when longer Inca rope bridges underwent periods, exceeding design assumptions?

A)Increased deck cable tensile failure
B)Increased embankment differential settlement
C)Taller pier masonry cracking risk
D)Main road reduced animal traffic

💡 Explanation

Increased deck cable tensile failure occurs in long bridges because creep, a diffusion mechanism causing slow plastic deformation under constant stress, gradually weakens the cable fibers. Therefore, fiber stress increases, rather than embankment settlement or pier issues, with heavier deck sagging.

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