Soil - Wall Friction Angle
Soil - Wall Friction Angle
(OP)
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:)
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:)





RE: Soil - Wall Friction Angle
RE: Soil - Wall Friction Angle
The dissimilar material friction factors (friction angle = atan(friction factor)) are used in various sliding calculations for many materials so they tend to not be defined in the Coulomb earth pressure sections of textbooks.
Google searth
https://books.google.com/books?id=Ozz8jXCp_jMC&...
RE: Soil - Wall Friction Angle
In certain instances, it's not necessary to use any reduction - for example on an MSE or a cantilevered retaining wall - one with a footing that extends below the retained soil.
1/2 to 2/3rds is about right though, when the design calls for such reduction.
f-d
ípapß gordo ainÆt no madre flaca!