The time required for a 50% consolidation of a 25 mm thick layer (drained at both and bottom) in the laboratory is 2min. 20 sec. a.) How long in days will it take for a 3 m. thick clay layer of the same clay in the field under the same pressure increment to reach 50% consolidation? In the field, there is a rock layer at the bottom of the clay. b.) How long in days will it take in the field for 30% primary consolidation to occur? c.) From the application of given pressure the anticipated primary consolidation settlement is 0.064 mm. What is the average degree of consolidation for the clay layer when the settlement is 0.02 mm?

The time required for a 50% consolidation of a 25 mm thick layer (drained at both and bottom) in the laboratory is 2min. 20 sec. a.) How long in days will it take for a 3 m. thick clay layer of the same clay in the field under the same pressure increment to reach 50% consolidation? In the field, there is a rock layer at the bottom of the clay. b.) How long in days will it take in the field for 30% primary consolidation to occur? c.) From the application of given pressure the anticipated primary consolidation settlement is 0.064 mm. What is the average degree of consolidation for the clay layer when the settlement is 0.02 mm?

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter9: Consolidation

Section: Chapter Questions

Problem 9.17P

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The time for 50% consolidation of a 1-in. thick clay layer (drained at top and bottom) in the laboratory is 2 min, 20 sec. How long (in days) will it take for an 8-ft thick layer of the same clay in the field (under the same pressure increment) to reach 30% consolidation? In the field, there is a rock layer at the bottom of the clay.
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