Q2. A compacted fill embankment is shown in Figure 3. Determine the stress increase atpoints A and B due to the embankment load.+B2.5 m2.5 m6 m1.514.0 mA8 m+Compacted fill7= 21 kN/m³Figure 3. Stress increase under an embankment6 m

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Answered: Q2. A compacted fill embankment is…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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For the layered soil shown in the figure, H1 = 5 m, H2 = 5 m, and H3 = 20 m. The soil densities are ρ1=2040kg/m3, ρ2=1940kg/m3, and ρ3′=1020kg/m3. What is the effective stress at the bottom of soil 3 when h' = 15 meters? CHOICES A. 142.7 kPa B. 150.1 kPa C. 163.8 kPa D. 136.8 kPa
2 Figure 2.10 shows the subsurface profile for a project site. Determine the fotal stress, pore Section pressure, and effective stress for Point B. 3.0 m y = 14.0 kN/m Silty sand (SM) = 45% D, ·2.1 m y = 17.5 kN/m 4.2 m y 13.5 kN/m Soft clay (CL) 6.0 m 2.0 m 3.1 m y = 15.0 kN/m Medium clay (CH) Glacial till
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B) For the soil profile shown in Figure (2), the rate of downward water flow is 0.4 m³/hr.m². Calculate: Peizometric reading at point C. Total head loss. Effective stress at point B. m 6 m A C K=1.0 m/ sec Ys = 18.0 kN/m³ e-1.2 K=0.5 m/sec Ys=20.0 kN/m² em 0.6 Datum Fig.(2) Piezometer
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
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
G,+S,e , a) Starting from the basic phase definitions (see the Appendix) show that y = 1+e b) Using the expression above, determine the distribution of the total and effective vertical stress with depth for the soil profile shown. Plot these distributions for 0 60%, T, : 1.781 – 0.933 log(100 – U%) C,H - log 1+e, o, + Ao' C,H 1+e, S = - log
Figure 3 shows the schematic of an embankment. The unit weight of the embankment material y is 18.0 kN/m³. The embankment has a crest width of 15 m, a height of 30 m, and a 1:1.5 (V:H) slope. Find the vertical stress increases at Points A, B and C due to the embankment. 7.5m 7.5m 1 m H 5 m C 15 m 30 m A B 1.5
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. 4o = alt (B₁ + B₂ + -14 m- (az) B₂ -11.5 m -5 m- H=7m -14 m- [y-17 kN/m² -16.5 m-

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Q2. A compacted fill embankment is shown in Figure 3. Determine the stress increase at points A and B due to the embankment load. + 2.5 m 2.5 m 6 m 1.5 1 4.0 m 8 m Compacted fill -y= 21 kN/m³ 6 m