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Which risk of failure increases when sustained ice accumulates on pre-industrial rope bridges?

A)Shear stress within hemp fibers
B)Torsional instability across deck planks
C)Galloping oscillations amplifying wind loads
D)Cable creep reducing tensile strength

💡 Explanation

Shear stress increases in the hemp of rope bridges because ice accumulation adds substantial weight, thereby exceeding pre-industrial materials limits. Therefore, fiber rupture becomes likely rather than torsional instability, galloping, or creep which are material or construction based issues not purely weight related.

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