Which risk increased for Medieval siege fortifications built directly atop older Roman foundations?

💡 Explanation

Differential settlement increased because the new structure’s load distribution differed significantly from the original Roman design; therefore, new loads caused variable soil consolidation, rather than predictable settlement in uniformly aged soil profiles.

• Which failure results when stacked-timber Viking bridges experience differential settlement?
• Which structural consequence occurs when timber piles supporting Venetian buildings are continuously submerged in water?
• Which strategic outcome increased for Byzantium when offering silk tapestries as diplomatic gifts?
• Which operational problem emerged in 18th-century warships when broadside cannons were fired simultaneously?
• Which outcome results when the raised bed construction of Aztec chinampas fails during an exceptionally wet rainy season?
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