As for the Rankine method (where the active failure plane behind the wall = 45+phi/2), can someone please explain to me (or at least point me in the right direction) how you would derive the failure plane angle for the Coulomb method?
I need to provide an assessment of temporary stability for a cut in predominantly cohesive material. The cut is a temporary works solution, to enable a gravity wall to be constructed and the cut subsequently backfilled.
I understand the need to assess the stability in terms of total stress for...
