Two embankments loads on silty clay soils layers as shown below. Unit weights of the left and right embankments are 11 and 13 kN/m³, respectively. Determine the stress increase under the embankments at point A that are loaded at a depth of 4 m below the ground urface. 3m Center line 1V:1H 7= 11 kN/m³ 7-13 kN/m [ HI:AT 5m 2 IV:1H

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

(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

2.3. For the circular footing shown in Figure (Q.43, estimate the immediate settlement at the center of footing [Hint: for round base convert to an equivalent square]

Q2. Analyse the stability of concrete gravity dam shown in the figure for the usual and unusual loading combinations. +70m 90m 1V:1H +0.0m Given data: f = 0.85, ø = 0.60, 7, = 6000 kN / m, o = 30000 kN / m² , of = 4000KN/m², Y con = 24 kN / m² , Yw= 10KN/ m , normal operating level is 70m, ice load is 60kN/m, silt height hs=5m., Y,=11kN/m, 0=32°.

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

(Use The Figure (10.20) to find the solution of this question) 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. 5m 1H:2V 1H:2V 1H:1V 8 m y-18 kN/m y-18 kN/m 6 m 4. y Figure 10.19 Embankment loading 050 TTTT 3.0 20 16 045 14 12 LO 040 09 07 035 06 030 05 04 - 025 03 020 02 015 a.10 Figure 10.20 Osterberg's chart for determination of vertical stress 0.00 due to embank- 0.01 0.1 10 100 ment loading 327

A trapezoidal channel with bottom width 3.5 m and side slopes 1H:1V on the left and 1.5H:1V on the right, with n = 0.016, and a bed slope of 2.6 in 10000 carries a discharge of 8 m³/s. Determine the normal depth and the average shear stress on the channel bed.

For a linear stress variation over the base of the dam and neglecting hydrostatic uplift. 20 m 120- 1 som 6. Locate where the resultant crosses the base a. 5.59 m b. 6.28 m c. 8.42 m d. 10.51 m 7. Compute the maximum compressive stress at the base a. 1390 kPa b. 1186 kPa c. 463 kPa d. 508 kPa

Question 11 A rectangular channel with width = 10 meters and depth = 3 meters has a flow slope of 0.001 and roughness n = 0.025. The flow rate is 80 m/s. Determine the shear stress on the channel in Pascals