How is the soil-wall friction angle determined, rigorously?
From my studies, I have been told to take is as ½ - ⅔ of the internal friction angle. But how does one get to this point. I have yet to find an explanation in any literature.
Thanks:)
Reading Das Principles of Geotechnical Engineering, chapter introducing shear failure.
A statement was made, that Mohr himself claims “all” material fail by a combination of shear and normal stresses.
1) Where can one find the supporting arguments?
2) What about a general case of a thin steel...
