Which risk increased for Inca reed suspension bridges during El Niño events?

💡 Explanation

Increased rainfall causes fibers to swell, lowering the specific tensile strength. This Fiber Hygroscopy mechanism reduces the effective load the bridge could support because water absorption weakens the fibers rather than causing erosion or quipu degradation therefore affecting load capacity.

• Which error increases when an astrolabe's altitude scale markings are unevenly spaced due to manufacturing variations?
• Which consequence results when wrought iron fatigue occurs in 18th-century cannon barrel construction?
• Within Mughal-era pietra dura floral inlays, which consequence arises from differential thermal expansion?
• Which threat increased for Inca rope bridges during wetter highland seasons within the Andes?
• Which action risks a ship running aground using 18th-century dead reckoning navigation after days without sights?
• Which outcome was enabled during Byzantine glazed brick & tile production with repeated firings?