3,500 kN/m2; and µs = 0.35. (Useful formula and table can be found from Appendix)

Q1:

Example 12.6 A square foundation is shown in Figure 12.9. Assume that the load eccentricity e 0.5 ft. Determine the ultimate load, Qut Sand y = 115 lb/ft d' = 30° 5ft X5ft c' 0 Figure 12.9

4. A flexible foundation is shown below, determine the immediate settlement below the center of the foundation. Assume the thickness of the soil below the foundation is 20 meters. Following is the variation of the modulus of the soil below the foundation. Es (kN/m²) Depth below the foundation(m) 0-4 4-8 8-20 >20 1.2m 10000 8000 12000 ∞ 90 = BXL = 2m x 2m Us = 0.3 150kPa