Fundamentals of Geotechnical Engineering (MindTap Course List)
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 11, Problem 11.3P
To determine

Find the height at which the concrete cube should be raised and dropped for densifying the granular soil of 10-m depth.

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As shown in the figure given below, a 5 m thick layer of silty sand overlies a clay layer 3 m in thickness. Below the clay layer, there lies a 4 m thick gravelly sand layer underlain by pervious bedrock. The ground water table is at the ground surface. GWT Silty Sand 5 m Ya = 18 kN/m³ Ys = 19 kN/m3 Clay 1.5 m 3 m Ys = 18 kN/m3 x A Gravelly Sand Ys = 20 kN/m3 2 m 4 m x B WXXX a) Calculate the total stress (0), pore water pressure (u) and effective stress (o') at points "A" and “B". Show your work and tabulate the results in the following form. Point A Point B o (kPa) u (kPa) o' (kPa) b) If ground water table is lowered by 2 m for foundation excavation purposes, calculate the total stress, pore water pressure and effective stress at points "A" and "B" (i) immediately after, (ii) long time after lowering the water table. Show your work and tabulate the results in the following form.
The soil profile shown in the figure consist of a 9m layer of sand underlain by a 6m layer of clay. The location of water table is 3m from the ground level. The building to be constructed will cause an additional an additional pressure of 60 kPa on the ground. What is the primary settlement of the clay layer if: a. Clay is normally consolidated b. Preconsolidated pressure Pc=200 kPa c. Preconsolidated pressure Pc= 160 kPa
Please help me with homework help. I’m struggling and can’t find how to resolve this. Show all work so i may learn! Thank you!
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