A square footing shown has a dimension of 1.0 m x 1.0 m has its bottom 2.5 i. below the ground surface. Angle of friction is 30' with Ne = 35, Ng 22 and %3D %3D Ny 19. Unit weight of soil is 18.1 kN/m with a cohesion of 15.7 kN/m". 3 Saturated unit weight of soil is 19.3 kN/m. Use factor of safety of 3. Calculate the allowable load that the footing could carry. O If there is no gronnd water table below the foundation. @ If the ground water table is located at 0.2 m. below the foundation. O If the ground water table is located at the bottom of the foundation. OIf the water table is located at 1.2 m. below the ground surface.

A rectangular footing 3m by 4m is founded 1.2m below the ground surface for which the unit weight of soil is 17.8kN/m3. The cohesion strength is 10kPa and the angle of internal friction is 20degrees. Under the condition of general failure, evaluate the contribution from the following to the ultimate soil bearing capacity in kPa. The ground water table is at a level that does not affect the unit weight of the soil. Use Terzaghi’s bearing capacity factor. For Ø=20degrees: Nc = 17.69, Nq = 7.44, Ny = 3.64. 23. Due to Cohesion Strength  Due to soil overburden Due to footing dimension

0:YA O A comprehensive.. Example (1): A strip footing of width 3 m is founded at a depth of 2 m below the ground surface in a (c - 0) soil having a cohesion c = 30 kN/m? and angle of shearing resistance o = 35°. The water table is at a depth of 5 m below ground level. The moist weight of soil above the water table is 17.25 kN/m. Determine (a) the ultimate bearing capacity of the soil, (b) the net bearing capacity, and (c) the net allowable bearing pressure and the load/m for a factor of safety of 3. Use the general shear failure theory of Terzaghi. Example (2): If the soil in Ex. (1) fails by local shear failure, determine the net safe bearing pressure. All the other data given in Ex. (1) remain the same. Example (3): If the water table in Ex. (1) rises to the ground level, determine the net safe bearing pressure of the footing. All the other data given in Ex. (1) remain the same. Assume the saturated unit weight of the soil ya= 18.5 kN/m'. Example (4): If the water table in Ex.1…

A square footing having a dimension of 4m has its bottom at a depth of 3.2m Trom the ground surface. The water table is located at an insignificant depth. FS=3 Properties of wet soil are as follows: Specific gravity, Gs = 2.7 Void ratio, e = 0.35 Degree of saturation = 70% Cohesion, c = 19 kPa Angle of internal friction = 26 degrees Assume general shear failure. Calculate the following: 1. Gross Ultimate Bearing Capacity of the footing using Terzaghi's assumption, kPa. 2. Net Allowable Bearing Capacity of the footing using Terzaghi's assumption, kPa. Capa