Which outcome occurs due to settlement beneath the foundations of a Roman castrum's curtain wall?

A)Arch displacement causing keystone instability

B)Differential settling leading to wall cracking✓

C)Mortar degradation causing efflorescence blooms

D)Over-compaction causing increased wall density

💡 Explanation

When settlement occurs unevenly, differential settling takes place because the soil compacts differently under various loads, causing stress concentrations within the wall. Therefore, wall cracking results, rather than arch displacement, mortar degradation, or overall increased wall density which are caused by different degradation mechanisms.

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Which outcome occurs due to settlement beneath the foundations of a Roman castrum's curtain wall?

💡 Explanation

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