Geotechnical Engineering

DHARM

N-GEO\ANS.PM5 878

878 GEOTECHNICAL ENGINEERING

CHAPTER 7

7.16. 4.5 cm 7.17. 0.565; 420 kN/m^2 ; Overconsolidated. 7.18. 1.246 7.19. 1.46 7.20. 1.34 7.21. Since the

pore pressure is greater than the neutral pressure, consolidation is not complete. 7.22. 70% 7.23. 20 cm

7.24. 63.75 mm 7.25. 3331

3

days. 7.26. 18.265 years 7.27. 1026 days 7.28. 5 cm 7.29. 5.87 cm;^4412

3

days. 7.30. 20.27 cm; 62,500 days. 7.31. 0.63 7.32. 780.8 days 7.33. 16.74 cm.

CHAPTER 8

8.10. 30°; 300 kN/m^2 (normal), 173.2 kN/m^2 (shear); 200 kN/m^2 (max. shear) 8.11. 42°; 37° 8.12. 133.22
kN/m^2 8.13. 38.22 kN/m^2 ; 6.77 kN/m^2 ; 57° with horizontal (major principal plane). 8.14. c = 87 kN/m^2 ;
φ = 36° 8.15. 435 kN/m^2 8.16. 488 kN/m^2 ; 126 kN/m^2 ;63° with horizontal (major principal stress). 8.17.
c = 120 kN/m^2 ; φ = 16°; 591 N; 330 kN/m^2. 8.18. 128 kN/m^2 8.19. c = 65.4 kN/m^2 ; φ = 18° 8.20. c = 215
kN/m; φ = 15°30′ 8.21. c = 70 kN/m^2 ; φ = 30° 8.22. 513.3 kN/m^2 8.23. 38°30′; 64°15′. 8.24. c = 91.3 kN/m^2 ;
φ = 10°; 117.8 kN/m^2 8.25. c = 40 kN/m^2 ; φ = 19°15′; c′ = 30 kN/m^2 ; φ′ = 24°00′. 8.26. c = 80 kN/m^2 ; φ =
7°30′ 8.27. φCIU = 18°;280 kN/m^2

CHAPTER 9

9.7. c = 16.96 kN/m^2 9.8. 1.9 (with respect to cohesion) 9.9. 12.5 m 9.10. 1.3 9.11. Fc = 1.5; F = 1.25 (for

equal mobilisation of friction and cohesion). 9.12. β = 24° (nearly).

CHAPTER 10

10.10. 0.06 t/m^2 10.11. 0.033 t/m^2 10.12. σz = 2.39 t/m^2 (Single point load), 2.21 t/m^2 (Four point loads),
2.16 t/m^2 (rigorous) 10.13. 38.2 kN/m^2 ; 18.3 kN/m^2 10.14. 122.75 kN/m^2 ; 105.1 kN/m^2 ; 47.75 kN/m^2
10.15. 58.2 kN/m^2 10.16. Centre: 3.183 t/m^2 (Single point load), 2.565 t/m^2 (Four point loads), 2.448 t/m^2
(rigorous); Corner: 1.473 t/m^2 (Single point load), 1.662 t/m^2 (Four point loads), 1.451 t/m^2 (rigorous)
10.17. 24.52 kN/m^2 (rigorous) 10.18. 25 kN/m^2 (rigorous) 10.19. 20 kN/m^2.

CHAPTER 11

11.7. 90 mm 11.8. 510 mm 11.9. 25 cm 11.10. Si = 72 mm, Sc = 362.3 mm; Total settlement = 434.3 mm

11.11. 137.44 mm 11.12. 465.84 mm; 41.66 mm; 83.33 mm

CHAPTER 12

12.13. 86.4% 12.14. 14.3%; 21.6 kN/m^3 12.15. 1940 m^3 12.16. 109.5 m^3 ; (9.18).kl 12.17. 6.5%; 20.66

kN/m^3 12.18. 12%; 18.94 kN/m^3 ; 19%.

CHAPTER 13

13.12. 303.8 kN/m at 3 m above the base; 587.3 kN/m 13.13. 715.2 kN/m; 1806 kN/m 13.14. Active;
Pressure in the dense state/ pressure in the loose state = 0.747; Passive: Pressure in the dense state/
pressure in the loose state = 1.760. 13.15. 92.8 kN/m. run at 1.74 m. above the base 13.16. 152% 13.17.
560 kN/m (ignoring tensile stresses); 1.11 m; 2.63 m. 13.18. 1189.4 kN/m at 1.87 m above the base.
13.19. 98 kN/m 13.20. 600 kN/m; 713 kN/m 13.21. σmax = 116 kN/m^2 ; (heel) σmin = 79.2 kN/m^2. (toe)