Question 1:
A 2-m by square footing is located 1.5 m below the ground surface, as shown Figure
1. The groundwater table is located 2.5 m below the ground level. The subsoil consist of a uniform deposit of a uniform deposit of sand with Υ = 16 kN/m3
Υsat = 18.5 N/m3 a, c' = 0 and Φ = 38o.
Determine the allowable load to be imposed on this foundation:
a) Using Meyerhof's method.
b) Using Terzaghi's method by considering General Shear Failure mode.
c) Using Terzadn's method by considering Local Shear Failure mode.
Question 2
Consider the combined footing shown in Figure below where column no. 1 (200mm x. 200mm) is located 240mm of a property line and column no 2 (250mm x 250mm) is at a dicrtance of 6.8 m, (center to center) from column 1. Column Loads; Colums no 1 = 500 kN column no.2 = 660 kN. Assume the calculated ultimate bearing, capacity is 180 kPa and a factor of saftey is 2.5
a.) Calculate the size of the required rectangular combined -footing.
b) Draw the shear force diagram and bending moment diagram for your footing.
c) Check if there exists any unbalanced moment.
Question 3
The cross section of a cantilever retaining wall is shown in Figure 3 below. Calculate the factors of safety with respect to overturning, sliding, and bearing capacity.
