A square foundation, 5 ft wide, carries a net column load of50 tons as shown in Figure P8.11. Determine the average stress increase beneath the center of the foundation in the clay layer: Using Eq. (8.25),a. Ucing Fas (8.26) and (8.10), and c. Using Eqs. (8.26) and (8.15).

Fig: 1

Fig: 2

Fig: 3

Fig: 4

Fig: 5