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← HistoryWhich risk critically increases when Inca stone masonry walls experience prolonged ground settlement?
A)Internal stone crystal fractures forming
B)Wall stability lessens via toppling✓
C)Accelerated surface stone weathering
D)Inter-stone seismic energy dissipation declines
💡 Explanation
Prolonged settlement causes tilting, which increases the effective vertical load's eccentricity. The increased eccentricity results in a higher bending moment via the overturning mechanism, because the line of action no longer remains within the base; therefore, toppling susceptibility is higher rather than just crystalline failures.
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