Refer to the retaining wall shown in Figure 14.18. Given: θ = 15°, a = 0, γ = 17.8 kN/m3, Ï•' = 30°, δ' = 18°, and H = 5 m. Estimate the passive force, Pp, per unit length of the wall using Zhu and Qian's method of triangular slices (Tables 14.2 and 14.3).

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22222333333 8 4567890 2 222222333 31 7 9 2 5 1112222222222222 1 186 0 2605059505173952 77889992 2 112 81 899 5 3715 2 1 Table 14.3 Variation of R Eq. (14.12)] R for ф, (deg) θ(deg) δ,14,' 35 0.2 1.2 .28 .35 45 0.4 14 1.6 .8 2.2 0.6 .65 1.95 2.4 3.2 0.8 1.95 2.4 3.15 4.45 1.0 2.2 2.85 3.95 61 0.2 1.2 1.25 1.32 14 0.4 1.4 1.6 .8 2.1 0.6 1.6 1.9 2.35 3.0 0.8 19 2.35 3.05 4.3 1.0 2.15 2.8 3.8 5.7 0.2 1.15 1.2 1.3 4 0.4 1.35 1.5 1.7 2.0 0.6 16 1.85 2.25 2.9 0.8 1.8 2.25 29 4.0 10 2.05 2.65 3.6 5.3 0.2 1.15 1.2 1.3 35 0.4 1.35 1.5 .65 95 0.6 1.55 .8 2.2 2.7 0.8 18 2.2 2.8 3.8 1.0 2.0 2.6 3.4 4.95 0.2 .15 1.2 1.3 35 0.4 1.35 1.45 1.65 9 0.6 15 .8 21 2.6 0.8 1.8 2.1 2.6 3.55 1.0 1.9 2.4 3.2 48 30 40 45 0 10 15 20