= = =

Normally the passive earth pressure Pp is not considered in the analysis. By neglecting Pp ' the factor of safety is

F = 1033-470 = 563 = 3.1 > 1.5 - OK s 181.2 181.2

Check for bearing capacity failure (Fig. 19.1b) From Eq. (19.8b and c), the pressures at the toe and heel of the retaining wall may be written as

q = R[I+ 6e] t B B

where e = eccentricity of the total load R (= LV) acting on the base. From Eq. (19.8a), the eccentricity e may be calculated.