I came across the following frase "Slip surface exit angle is steeper than 45 degrees" while doing a very simple stability analyse with Geostudio/SlopeW.
The solution couldn´t converge/An unrealistically small factor of safety, I presume?
My geomechanics book tells me that the maximum exit angle
is about 66.7 degrees(when load is applied to a horisontal soil surface and the soil is homogenous cohesion soil).
Why can´t I calculate bigger/steeper angle´s?
Is this only with Geostudio/SlopeW or is it the same with other programs?
Or should I just get a better geomechanics book?
Very thankful for all replies(hope you understood the question)
Yours Ville Vallaton (Dennis the Menace in english)