Answered: A soil profile is shown in Figure 1.…

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter11: Compressibility Of Soil

Section: Chapter Questions

Problem 11.15P

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Question

Last Two Digit of Roll = 15

Transcribed Image Text:1. A soil profile is shown in Figure 1. Determine the total consolidation settlement of the clay layer 7 years after the completion of primary consolidation settlement. (Take necessary data from Figure 2 and Figure 3. (Note: Time for completion of primary settlement is 2.5 years) Also, determine the time to complete 60% consolidation of this type of soil; if the coefficient of consolidation is 0.053 m²/yr. Ag = Last two digits of Roll/Registration No. (kN/m²) 6 ft Ya= 15.1 kN/m³ Ya= 14.2 kN/m? 0 = 12% Degree of Saturation, S = 75% G, = 2.68 8 ft 13 ft Ysat= 19.7 kN/m³ Sand Clay Figure 1: Soil Profile

0.94
e-log o Curve
0.89
0.84
0.79
0.74
0.69
0.64
0.59
0.54
1
10
100
Pressure, kPa
1000
10000
Figure 2: Void Ratio vs. Pressure Graph
0.95
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0.55
0.5
0.1
10
100
1000
10000
Time
Figure 3: Void Ratio vs. Time Graph
Void Ratio
Void Ratio

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