If in Figure 8.19 B₁ = 5.0 m, B₂=3.0 m, H = 4 m, z = 3 m, and the embankment applies a force of 137 kN/m2, the stress increase experienced 3 m (z = 3 m) below the bottom right corner point of the figure is, B₂- ** FIGURE 8.19 Embankment loading 105.58 kN/m² 62.34 kN/m² Ⓒ150.78 kN/m² Ⓒ224.88 kN/m² -9-yl

An embankment consists of clay fill for which c′ = 25 kN/m2 and φ = 27° (from consolidated undrained tests with pore-pressure measurement). The average bulk unit-weight of the fill is 2 Mg/m3. Estimate the shear-strength in kPa of the material on a horizontal plane at a point 20 m below the surface of the embankment, if the pore pressure at this point is 180 kN/m2 as shown by a piezometer.

For the embankment shown in Figure 10.45, determine the vertical stress increases at points A, B, and C

The figure shows a weir, the base of which is 6m below the ground. The necessary flow net has also been drawn assuming Kx = Kv = K. K = 0.005 m⁄sec. Compute the following: rate of seepage through the foundation in liters/sec. uplift pressure at“f”. uplift force per unit length measured along the axis of the

4. The masonry dam shown below has a crest width of 2m, base width of 15.0 m, and a height of 20m. Masonry weighs 23.54 kN/m³. If the allowable compressive stress at the toe is 345 kN/m², what is the permissible depth of the headwater? Assume there is no hydrostatic uplift. 2 m Elev. 8 m (crest) W.S. h/3 Elev. 0 m (base) Тое 15 m

(Use The Figure (10.20) to find the solution of this question) Two embankments loads on silty clay soils layers as shown below. Unit weights of the left and right embankments are 11 and 13 kN/m², respectively. Determine the stress increase under the embankments at point A that are loaded at a depth of 4 m below the ground surface. Center ine 1V:1H y= 11 kN/m 5m 13 N/m Figure 10.19 Embankment loading 050 3.0 20 045 14 12 LO 0.40 09 07 0.35 06 0.30 04 025 020 02 a10 Figure 10.20 Osterberg's chart for determination of vertical stress 0.00 TT TT due to embank- 100 ment koading 327 HEAI

Subject: Soil Mechanics

A building is founded on a rectangular mat of dimensions 20 m x 10 m as shown in the plan view in figure below. A surcharge of 300 kPa is applied within the area ABCD whereas a surcharge of 100 kPa is applied within the area CDEF. Calculate the increase in vertical total stress in kPa at the depth of 5 m below Point F

a= 5

2 A granular soil is subjected to a minor principal stress of 200 kN/m². If the angle of internal friction is 30°, determine the inclination of the plane of failure with respect to the direction of the major principal stress. What are the stresses on the plane of failure and the maximum shear stress induced? 3 An embankment consists of clay fill for which c' 25 kN/m2 and o = 27° (from consolidatedundrained tests with pore-pressure measurement). The average bulk unit-weight of the fill is 2 Mg/m'. Estimate the shear- strength of the material on a horizontal plane at a point 20 m below the surface of the embankment, if the pore pressure at this point is 180 kN/m² as shown by a piezometer.