The soil conditions adjacent to a rigid frictionless retaining wall are shown in

Question

The soil conditions adjacent to a rigid frictionless retaining wall are shown in the figure below. A surcharge pressure of 50 kN/m2 is applied on the surface of the backfill. For Soil A above the water table, c'= 0, phi' = 38 degree , y= 18 kN/m3. For Soil B below the water table, c' = 10 kN/m2, phi = 28 degree, Y SAT = 20 kN/m3. Calculate the maximum Rankine active earth pressure behind the wan and the resultant active force per unit length of the wall Also determine the location of the resultant force. A retaining wall is shown in the figure below Find the active force per unit length of the wall and its location: a Using Coulomb's equation. Using Culmann's graphic construction procedure. For the earthquake force condition. A rectangular footing of size 12X24 feet Is founded at a depth of 8 feet below the ground surface in a c'-phi' soil. The following data are available: (a) the water table is located at a depth of 4 feet below ground level: (b) c' = 600 lb/ft2. phi' = 30 degree and y = 118 lb/ft3. Determine the ultimate bearing capacity using Terzaghi's general shear failure theory and Meyerhof general equation. What Is the maximum load the footing can carry if the factor of safety must be 3.0. A rectangular footing (L X B) is subjected to an eccentric load as shown in the figure. Determine the gross allowable load that footing can carry safely with a factor of safety of 4 Use Meyerhofs procedure and y = 120 lb/ft3, c' = 400 lb/ft2, phi = 25 degree, B = 6 ft, L= 12 ft, D f = 4.5 ft, e x = 0.5 ft and ey = 0.

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