foundation behind MSE wall
foundation behind MSE wall
(OP)
Hello, I have designed a MSE wall that is 27 feet max in height. Now the owner wants to include a monument sign behind the wall face about 10' at the max height location. The sign weight is about 375 kips. The lateral pressure from a shallow foundation appears to overstress the goegrids. Does anyone know an appropriate analysis method if a deep foundation is used?





RE: foundation behind MSE wall
RE: foundation behind MSE wall
It seems over the top to put in a deep foundation just to support a monument sign. Why not treat the shallow foundation just as you would a superimposed bridge abutment bearing shelf and increase the capacity of the grids? (unless of course your wall is already built). You probably want to keep the bearing stress down to about 350 psf which will give you something like a 15' square base (just enough to keep a few feet back from the wall face).
RE: foundation behind MSE wall
RE: foundation behind MSE wall
Anyway- not every grid needs to be attached to the facing so you can make the spacing whatever you like. To tension the grid use some u-shaped pins near the face made out of bent rebar.
RE: foundation behind MSE wall