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

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A 4.0 m thick marine clay layer with double drainage has a coefficient of consolidation c_v = 2.5 m²/year. For 90% degree of consolidation, the time factor is T_90 = 0.848. How long (in years) will it take for the clay layer to reach 90% consolidation?

1.36 years 5.43 years 2.71 years 0.68 years

Correct Answer:

1.36 years

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