Which risk increases when building foundations sit atop liquefiable soil deposits during an earthquake?

A)Differential settlement and structural collapse✓

B)Amplified resonant frequencies with increased stiffness

C)Shear failure from high-cycle fatigue loading

D)Reduced ductility leading to brittle fracture

💡 Explanation

When liquefiable soil undergoes seismic shaking, it loses its shear strength because pore water pressure increases, effectively turning solid ground into a liquid, leading to structural collapse due to differential settlement. Therefore settlement and collapse results, rather than resonance, shear failure or brittle fracture which require firmer ground conditions.

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Which risk increases when building foundations sit atop liquefiable soil deposits during an earthquake?

💡 Explanation

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