Refer to Figure 16.11. A 6.0 m high smooth wall retains a c' = ' soil backfill, where c' = 10.5 kN/m 2 , f'

Refer to Figure 16.11. A 6.0 m high smooth wall retains a c' = ϕ' soil backfill, where c' = 10.5 kN/m², f' = 15°, and γ = 17.5 kN/m³. The backfill is sloping at 5°.

a. Determine the depth of tensile crack, z_c.

b. Determine the active pressure variation with depth, based on Eqs. (16.32) and (16.33).

c. Determine the magnitude, location, and direction of the resultant active thrust, P_a.

Eqs. (16.32)

Eqs. (16.33)

Figure 16.11

o% = yzK. = yzK, cos a