4.4 Determine the increase of pore water pressure at M due to the strip loading shown in Figure P4.2 Assume v=0.5 and a = 0 for all cases given below. (a) == 2.5m, x = 0m, 4= 0.65. (b) == 2.5m, x = 1.25m, 4= 0.52. 9-215 kN/m² 25 m 5 m. - G.W.T. Silty clay

6. 7. Calculate the induced vertical stress at point A at a depth of 5 feet. The surface stress in the shaded areas is 3000 lb/ft2. Hint: The contributions of the shaded areas must be calculated separately and then added together. The contribution from the lower area will require the use of imaginary rectangles. (Answer: 1892 lb/ft2, yours may differ slightly) Four 40' diameter fuel tanks are constructed in a square pattern. The tanks apply a maximum surface pressure of 5000 lb/ft2. The spacing of the tanks is 50 feet center- center. What is the induced vertical stress beneath the center of the area at depths of 20 feet and 50 feet? (1400 and 1700 lb/ft2, some variation expected from chart reading)

5. Compute the magnitude of the resultant force on the indicated area and the location of the centre of pressure as shown in Figure 5. Show the resultant force on its location. 0.80 m 0.5 m Semicircular hatch 1.50-m diameter Turpentine sg =0,88 70 Figure 5: A Tank

P1: Consider the upward flow of water through a layer of sand in a tank as shown in Figure. For the sand, the following are given: void ratio (e) = 0.52 and specific gravity of solids = 2.67. a. Calculate the total stress, pore water pressure, and effective stress at points A and B. b. What is the discharge flow of the soil if k=4.0*10-2 cm/s and A=1 m2? 1.5 m 0.7 m 1 m 2 m Valve (open) Inflow ESand

H.W.3: Two solid cylindrical rods support a load of P = 27 kN, as shown in Figure 1 Rod (1) has a diameter of 16 mm, and the diam- eter of rod (2) is 12 mm. Determine the axial normal stress in each rod. iad Nadrom Shu 3.2 m (1) 4.0 m 2.3 m B

3. The upward flow of water through a layer of sand in the tank shown in figure has the following properties: e =0.50, G-2.67. Determine the following: a) Effective stress at point A b) Effective stress at point B c) Upward seepage force per unit volume of soil 0.8m 3.5m Supply of Water 0.5m A B 1.9m

When filled to capacity, the unpressurized storage tank shown in Figure contains water to a height of h = 30 ft. The outside diameter of the tank is 12 ft and the wall thickness is 0.375 in. Determine the maximum normal stress on the outer surface of the tank at its base. (Weight density of water = 62.4 lb/ft³.) h :

Same as Example 2.1, except that only the left loaded area exists and the Poisson ratio is 0.3, as shown in Figure 2.8. Determine the stresses, strains, and deflection at point A. E = 10,000 psi v = 0.3 10 in. 50 psi all o, e, w = ? 10 in. FIGURE 2.8 Example 2.2 (1 in. -25.4 mm, 1 psi = 6.9 kPa).

Direct Stress 25 kN 20 kN 30 kN B• C D А +1.5 m→ 3 m 3 m 1. The cross-sectional area of bar ABCD is 600 mm². Determine the maximum normal stress in the bar.

A vertical propane tank with an outside diameter of D=300 mm and a wall-thickness of t=14 mm is subjected to a horizontal force of F = 41 kN. The gage pressure inside the tank is 6 MPa. [D=300 mm, t=14 mm, F=41 kN, h = 1 m] Determine the shear stress produced by the applied force at K. 0 MPa 17.91 MPa 6.51 MPa 19.5 MPa 7.61 MPa Feedback: Shear stress is developed at point k due to the applied force P. Correct answer: 6.51 MPa