The watr tabble is 9' below the surface wthin a sandy gravel layer 30' thick. the sandy gravel layer overlays a 15' thick clay layer.
Sandy gravel (Dray Unit weight=110pcf, n=0.40 Gs=2.65
Clay(saturated Unit weight=112pcf)
C'(cohesion)=3.5psi phi(angle internal Friction)=27
The shear strength at the middle of caly layer=? psi
Sandy gravel (Dray Unit weight=110pcf, n=0.40 Gs=2.65
Clay(saturated Unit weight=112pcf)
C'(cohesion)=3.5psi phi(angle internal Friction)=27
The shear strength at the middle of caly layer=? psi