Thanks Ron. In fact the existing footing is my main concern. That is why i am trying to design a retaining wall to support the soil underneath the footing before starting to excavate in that area. My question is 1)What would be the forces on that wall? For example is the Boussinesq equation...
I am excavating 1.2m deep right next t a 7 story building. Depth is 1.2m below that building's foundation which is strip foorting. The footing is located right on the edge of the excavation. I have calculated a surcharge of 10 ton/sq-m for that footing. From the typical formulas, i come up...