ABSTRACT
PI 3. Active earth pressure in front of the wall from the point of rotation to the bottom of the
wall. This pressure is designated as P . a2
4. Passive earth pressure at the back of wall from the point of rotation 0' to the bottom of the wall. This pressure is designated as Pp2'
The pressures acting on the wall are shown in Fig. 20.6 (a). If the passive and active pressures are algebraically combined, the resultant pressure distribution
below the dredge line will be as given in Fig. 20.6 (b). The various notations used are: D = minimum depth of embedment with a factor of safety equal to 1
Rankine active earth pressure coefficient
Rankine passive earth pressure coefficient
Kp-KA effective active earth pressure acting against the sheet pile at the dredge line =yHKA effective passive earth pressure at the base of the pile wall and acting towards the backfill = yDoK
B
H
Figure 20.6 Pressure distribution on a cantilever wall.
