Which risk increased during Viking-era pontoon bridge construction?

💡 Explanation

Pontoon bridges had minimal rigid connections; increased deck span raises torsional stress because load is distributed unevenly, therefore twisting (torsional stress) is elevated, rather than improved bouyancy which distributes the load.

• Which consequence resulted from carbon levels exceeding threshold in early iron smelting?
• Which consequence arises as the voids in pietra dura narrow?
• Which outcome arises if humidity causes index mirror corrosion in an 18th-century sextant during celestial navigation?
• Which outcome occurs due to fluctuating moisture if subsurface drainage fails near Mughal gardens featuring pietra dura?
• Which consequence results from water hammer in early cast iron water distribution systems?
• Which consequence arose from the limitations in astrolabe precision during medieval navigation?