PE Construction Practice Questions - PE Civil Construction Engineering Exam

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An overconsolidated clay layer has current effective overburden stress of 1.5 ksf and preconsolidation pressure of 3.0 ksf. A new foundation increases the final effective stress at the layer center to 3.8 ksf. Which settlement behavior is expected?

Only elastic heave because the clay is overconsolidated Primarily recompression only because final stress remains below preconsolidation Recompression up to 3.0 ksf followed by virgin compression beyond 3.0 ksf No significant time-dependent settlement because final stress is less than 4.0 ksf

Correct Answer:

Recompression up to 3.0 ksf followed by virgin compression beyond 3.0 ksf

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