For a retaining wall with a granular backfill, the following soil parameters, wall and backfill configurations are given:
\phi ^(')=30\deg ,32\deg and 39\deg
c^(')=0
\delta ^(')=((2)/(3))\phi
\alpha =0^(0),5\deg , and 10\deg
\beta =0\deg ,15\deg and 25\deg
Compute the Coulomb
K_(a)
and
K_(p)
coefficients under these conditions, 20marks