Retaining Wall Stability Check Against Sliding
Retaining Wall Stability Check Against Sliding
(OP)
I was talking with someone who was coomenting on the sliding check for a soil retaining wall with water table part height of the retaind soil. His opinion is that since there is upward water pressure underneath the base, this will reduce the effective weight of the wall. And the frictional resistance W times(co-eff of friction) should be modified to reflect this reduced W. Although most engineers correctly include the horizontal water pressure for checking against overturning, not many check the resistance against sliding this way - they take the full W.
His comment seem logical to me. But in the past I have not considered this reduced weight of wall.
Also what is the appropriate Factor of safety against sliding? I come across cases where any value greater than 1.0 is taken as acceptable. And some ask for 2.0.
Your comments will be appreciated.
His comment seem logical to me. But in the past I have not considered this reduced weight of wall.
Also what is the appropriate Factor of safety against sliding? I come across cases where any value greater than 1.0 is taken as acceptable. And some ask for 2.0.
Your comments will be appreciated.






RE: Retaining Wall Stability Check Against Sliding
What is the scenario of the function of the wall?
Mike McCann
MMC Engineering
Motto: KISS
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RE: Retaining Wall Stability Check Against Sliding
Also, thinking back to my soils engineering days, I would think you might have some soil stability problems with this type of wall (as water tried to flow under the wall).
RE: Retaining Wall Stability Check Against Sliding
BA
RE: Retaining Wall Stability Check Against Sliding
RE: Retaining Wall Stability Check Against Sliding
BA
RE: Retaining Wall Stability Check Against Sliding
regarding the factor of safety question, I think that the reduced dead load given by the load combination should account for that.
RE: Retaining Wall Stability Check Against Sliding
The factor of safety against sliding should certainly be more than 1.0 and I would think 2.0 is a reasonable value.
BA