A column foundation (Figure P6.9) is 3 m 2 m in plan. Given: D f = 1.5 m, ' = 25, c' = 70

A column foundation (Figure P6.9) is 3 m × 2 m in plan. Given: D_f = 1.5 m, ϕ' = 25°, c' = 70 kN/m². Using Eq. (6.28) and FS = 3, determine the net allowable load [see Eq. (6.24)] the foundation could carry.

Figure P6.9

 

Eq. (6.24)

Eq. (6.28)

y = 17 kN/m3 1.5 m 1 m Groundwater level 3 m x 2 m Ysat 19.5 kN/m? 3