Answered: (c) In the soil profile below (Figure…

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.1P

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Transcribed Image Text:(c) In the soil profile below (Figure Q4c), a piezometer was placed at point A. The hight of water in the piezometer after a period of rising, reached to, and stopped at the ground water table (GWT) level (came to equilibrium). if a uniformly distributed surcharge load (spreading over an infinite area) of 120 kN/m? is applied on the ground surface (assuming uniform increase of initial excess pore water pressure through the whole thickness of the clay layer): What will be the height of water in the piezometer above ground water level (h) immediately after applying the surcharge? i. After 100 days of load staying in place the height of water in the piezometer is 5m above the ground water level. Determine the coefficient of consolidation for the clay in cm?/sec. ii. How many days will it take for the height of water in the piezometer to fall to the ground level. iii. 120 kPa 2m GWT Sand 3m Sand 1.5m 3m Clay A Bedrock Figure Q4c

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