MSE soil parameters for global stability analysis
MSE soil parameters for global stability analysis
(OP)
What value of c and phi are appropriate for the material (compacted sand) in an MSE wall? Obviously the sand must have a phi of about 36 degrees. However, when running a global stability analysis, there must be some theoretical c, otherwise the wall cannot stand vertically. I seem to remember giving it a c of 800 psf. Another way I have seen it done is to put an extremely rigid layer at the base of the wall so that a failure circle does not pass through it. I use XSTABL for my analyses.





RE: MSE soil parameters for global stability analysis
RE: MSE soil parameters for global stability analysis
I don't think you can get a material call sand with such a high cohesion. The c in sand depeds on the confining pressure of the test( CIU or CID). c normally don't used in MSE with sand as fill, even you compact it. Soils don't normally behave as you wish
Cheer.
RE: MSE soil parameters for global stability analysis
I also have a question regarding drainage of MSE walls. What is the typical behind wall drainage specifications in your areas? Do you just require a free-draining gravel/drainage system directly behind the wall facing or do you require it at the back of the reinforced fill section/face of cut as well?
Your experiences would be greatly appreciated.
RE: MSE soil parameters for global stability analysis
Dimitris P. Zeccos