ABSTRACT
Check for a foundation failure Consider the wall as a surface foundation with Df = O. Since the foundation soil is cohesionless, we may write
Use Terzaghi's theory. For l/J =34°, Ny =38, and B =2m
The actual load intensity on the base of the backfill
q(actual) = 18 x 6 + 10 = 118 kN/m2
684 ~ = '118 = 5.8> 3 which is acceptable
Example 19.5 (Koerner, 1999) Design a 7m high geogrid-reinforced wall when the reinforcement vertical maximum spacing must be 1.0 m. The coverage ratio is 0.80 (Refer to Fig. Ex. 19.5). Given: T
u = 156 kN/m, C
r = 0.80,
Ci = 0.75. The other details are given in the figure.
