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HKIE Professional Assessment - Geotechnical Discipline Practice Questions - HKIE Professional Assessment - Geotechnical Discipline (Hong Kong Institution Of Engineers) Exam

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A soil profile consists of a 3 m thick upper layer of dry sand above a saturated sand layer. The total unit weight above the groundwater table is 18 kN/m³ and the saturated unit weight below is 20 kN/m³. The groundwater table is located at 3 m depth. What is the vertical effective stress at a depth of 8 m?
Correct Answer:
104.95 kPa

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