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← HistoryWhich risk arises in Viking-era rope bridges from hygroscopic material degradation?
A)Increased axial tensile forces
B)Reduced static load capacity✓
C)Elevated natural resonant frequency
D)Decreased resistance to harmonic vibrations
💡 Explanation
Reduced static load capacity arises because moisture absorption initiates hydrolysis, weakening natural fibers; this is Creep rupture. Therefore, collapse is more common near supports; rather than purely tension-based, wind related or vibrational failure initially.
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