4. How would you design a drainage system for the gravity retaining wall is the previous problem? Use sketches to facilitate your description. Bearing capacity equation: q=CNFFF+NFFF+0.57BN,F_F_F Fo=1+(x) LN B F =1+2 tan ø'(1-sing')³ DF, = (1- Shape factors by De Depth factors by Hansen (1970) Inclination factors by Meyerhof (1963) Beer (1970) and Hanna and Meyerhof (1981) F =1+0.4(+) F₁ = F₁₂ = (1-B 90° F= B F₁ =1 F,=1-0.4(2) = Equations and Tables: K 1-sino' K = 0.95-sin o' Table 4.2 Bearing Capacity Factors K K o(overconsolidate) o(normally consolidated) NOCR Ka an²(45-%) = tan cosa-√cos a-cos² ' Ka= =COS d cosa +√cos² a-cos² K₁ = sin ẞ sin(ẞ-8)[1+, NC Na N₁ 01234567 5.14 1.00 0.00 5.38 1.09 0.07 5.63 1.20 0.15 5.90 1.31 0.24 6.19 1.43 0.34 6.49 1.57 0.45 6.81 1.72 0.57 7 7.16 1.88 0.71 23 Cosa+cos α- K₁ =COS& cos a-cos² o' 8 7.53 2.06 0.86 24 9 7.92 2.25 1.03 COSC = -√cos² α-cos² ' 10 8.35 2.47 1.22 11 8.80 2.71 1.44 27 12 9.28 2.97 1.69 13 9.81 3.26 1.97 14 10.37 3.59 2.29 30 1658982222222222 N Na N₁ 11.63 4.34 3.06 17 12.34 4.77 3.53 13.10 5.26 4.07 13.93 5.80 4.68 20 14.83 6.40 5.39 15.82 7.07 6.20 16.88 7.82 7.13 18.05 8.66 8.20 19.32 9.60 9.44 20.72 10.66 10.88 22.25 11.85 12.54 23.94 13.20 14.47 25.80 14.72 16.72 27.86 16.44 19.34 30.14 18.40 22.40 15 10.98 3.94' 2.65 31 32.67 20.63 25.99 (continued) sin² (B+) sin(ø' + d) sin($' – α) 1² sin(B-) sin(a + ẞ) sin² (B-) K₁ sin ẞ sin(ẞ+6)[1- sin(+6) sin('+a)² sin(ẞ+8) sin(a+ẞ) Table 4.2 Bearing Capacity Factors (Continued) $' No Na N₁ φ' No N₁₂ Ny 32 35.49 23.18 30.22 42 93.71 85.38 155.55 33 38.64 26.09 35.19 43 105.11 99.02 186.54 34 42.16 29.44 41.06 44 118.37 115.31 224.64 35 46.12 33.30 48.03 45 133.88 134.88 271.76 36 50.59 37.75 56.31 46 152.10 158.51 330.35 37 55.63 42.92 66.19 47 173.64 187.21 403.67 38 61.35 48.93 78.03 48 199.26 222.31 496.01 39 67.87 55.96 92.25 49 229.93 265.51 613.16 40 75.31 64:20 109.41 50 266.89 319.07 762.89 41 83.86 73.90 130.22

4. How would you design a drainage system for the gravity retaining wall is the previous problem? Use sketches to facilitate your description. Bearing capacity equation: q=CNFFF+NFFF+0.57BN,F_F_F Fo=1+(x) LN B F =1+2 tan ø'(1-sing')³ DF, = (1- Shape factors by De Depth factors by Hansen (1970) Inclination factors by Meyerhof (1963) Beer (1970) and Hanna and Meyerhof (1981) F =1+0.4(+) F₁ = F₁₂ = (1-B 90° F= B F₁ =1 F,=1-0.4(2) = Equations and Tables: K 1-sino' K = 0.95-sin o' Table 4.2 Bearing Capacity Factors K K o(overconsolidate) o(normally consolidated) NOCR Ka an²(45-%) = tan cosa-√cos a-cos² ' Ka= =COS d cosa +√cos² a-cos² K₁ = sin ẞ sin(ẞ-8)[1+, NC Na N₁ 01234567 5.14 1.00 0.00 5.38 1.09 0.07 5.63 1.20 0.15 5.90 1.31 0.24 6.19 1.43 0.34 6.49 1.57 0.45 6.81 1.72 0.57 7 7.16 1.88 0.71 23 Cosa+cos α- K₁ =COS& cos a-cos² o' 8 7.53 2.06 0.86 24 9 7.92 2.25 1.03 COSC = -√cos² α-cos² ' 10 8.35 2.47 1.22 11 8.80 2.71 1.44 27 12 9.28 2.97 1.69 13 9.81 3.26 1.97 14 10.37 3.59 2.29 30 1658982222222222 N Na N₁ 11.63 4.34 3.06 17 12.34 4.77 3.53 13.10 5.26 4.07 13.93 5.80 4.68 20 14.83 6.40 5.39 15.82 7.07 6.20 16.88 7.82 7.13 18.05 8.66 8.20 19.32 9.60 9.44 20.72 10.66 10.88 22.25 11.85 12.54 23.94 13.20 14.47 25.80 14.72 16.72 27.86 16.44 19.34 30.14 18.40 22.40 15 10.98 3.94' 2.65 31 32.67 20.63 25.99 (continued) sin² (B+) sin(ø' + d) sin($' – α) 1² sin(B-) sin(a + ẞ) sin² (B-) K₁ sin ẞ sin(ẞ+6)[1- sin(+6) sin('+a)² sin(ẞ+8) sin(a+ẞ) Table 4.2 Bearing Capacity Factors (Continued) $' No Na N₁ φ' No N₁₂ Ny 32 35.49 23.18 30.22 42 93.71 85.38 155.55 33 38.64 26.09 35.19 43 105.11 99.02 186.54 34 42.16 29.44 41.06 44 118.37 115.31 224.64 35 46.12 33.30 48.03 45 133.88 134.88 271.76 36 50.59 37.75 56.31 46 152.10 158.51 330.35 37 55.63 42.92 66.19 47 173.64 187.21 403.67 38 61.35 48.93 78.03 48 199.26 222.31 496.01 39 67.87 55.96 92.25 49 229.93 265.51 613.16 40 75.31 64:20 109.41 50 266.89 319.07 762.89 41 83.86 73.90 130.22

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter17: Retaining Walls

Section: Chapter Questions

Problem 17.5P

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