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← GeographyWhich risk increases in buildings founded on loosely packed, saturated soil during an earthquake?
A)Liquefaction-induced structural collapse✓
B)Resonance amplification of shear waves
C)Shear failure from increased friction
D)Torsional stress from surface waves
💡 Explanation
During strong ground motion, loosely packed saturated soils can undergo liquefaction because shaking increases pore water pressure, reducing effective stress and soil strength, leading to structural collapse. Therefore liquefaction-induced collapse results, rather than amplification, shear failure, or torsional stress which depend on different types of seismic and structural mechanisms.
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