An embankment is shown in the figure. Determine the stress increase (in kPa) under the embankment at points A₁ at a depth of 8m and A₂ at a depth 4m. 5 m = 14 m B₂ 40-18+)G)-2 B₂ -11.5 m- B (α₂)] 5 m H 7 m -14 m- y=17 kN/m² 16.5 m

Subject: Soil Mechanics

H.Q 5 Figure below shows an embankment load on a silty clay soil layer. Determine the stress increase at points A, B, and C that are located at a depth of 5 m below the ground surface. + 6 m I Center line IV:2H IV:2H 10m y=17 kN/m

For linear stress variation over the base of the dam of the figure, find where the resultant crosses the base and compute the maximum and minimum pressure intensity at the base. Neglect hydrostatic uplift. Ans.Pmax=555 kPa; Pmin=129 kPa Note: unit weight of concrete is 2.5 times unit weight of water. 6m 19m 1 Y'=2.5Y 1 30 40 ¹3 mi 4 m -11 m

An embankment load on a silty clay soil layer as shown below. Determine the stress increase under the embankment at points A and B that are loaded at a depth of 6 m below the ground surface, please use figure (10.20). 5 m 1Н:2V, 1H:2V 1H:1V 8 m y=18 kN/m y=18 kN/m" 6 m : B Figure 10.19 Embankment loading 0.50- 3.0 20 16 0.45- 14 1.2 LO 0.40 - 0.9 0.8 0.7 0.35 - 0.6 030- 05 04 * 025 - 03 0.20 - 0.2 0.15 - 0.10 - 0.1 0.05- Figure 10.20 Osterberg's chart for determination of vertical stress 0.00 TI TT - due to embank- 01 0.1 10 ment loading 100 327

Consider the soil profile depicted in the figure below. The water table is located 3 m below the ground surface. Calculate the vertical effective stress at Point A in kPa (acceptable tolerance = 2%).

EXAMPLE 10.15 An embankment is shown in Figure 10.29a. Determine the stress increase under the embankment at points A₁ and A₂. 14 m- 5m 11.5 m- 5 m č A₂ At point A₁ -14 m- → 5m → ← 5m 5 m A₂ 11.5 m At point A₂ H=7m ► 5 m 8 A₁ 5m+¦+ H=7m >· 5 m X A₁ 14 m 16.5 m 5 m 14 m EXAMPLE 10.15 An embankment is shown in Figure 10.29a. Determine the stress increase under the embankment at points A, and A₂. 14 m 16.5 m y= 17.5 kN/m³ 5m9 = (2.5 m) x (17.5 - A₂ H A0₂ (1) kN/m³) = 43.75 kN/m2 Aσ₂ (1) y= 17.5 kN/m² B A₁ 1 90 = 122.5 kN/m2 + + T 5m 9=(7 m) x (17.5 kN/m³)= 122.5 kN/m² % = 122.5 kN/m² A₂ 2.5 m →→ ● A0₂ (2) A₁ 14 m- A₂ (2) 9 (4.5 m) x (17.5 kN/m³)= 78.75 kN/m² Aar: (33) A₂ 14 m 9 m ➜ 14 m 1

Given The uniformly loaded area shown below is built on the ground surface and carries a load of 160 kPa. D1-8 m D2 = 12 m D3 = 4 m D4-5 m D5 = 3 m D1 D3 D2 D5 A D4 Required Determine the vertical stress increment at a depth of 10 m below Point A. Provide answer in kN/m², to the nearest 100th.

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Q-1: For the following soil system determine the effective stress and pore-water pressure at the point “A" when i) water table is at ground surface ii) water table is 1m below the ground surface (consider ya = 16 kN/m³) 1 m Ysat = 18 kN/m 5 m 5 m Ysat= 18 kN/m Yw = 10 kN/m A Y = 10 kN/m³ (i) (ii)