ABSTRACT
Backfill Horizontal-Passive Earth Pressure If wall AB is pushed into the mass to such an extent as to impart uniform compression throughout the mass, soil wedge ABC in Fig. 11.8(a) will be in Rankine's passive state of plastic equilibrium. The inner rupture plane AC makes an angle 45° + qi2 with the vertical AB. The pressure distribution on wall AB is linear as shown in Fig. 11.8(b).
