Question: Given the data of Example 10.6. Instead of a load on the surface, compute the depth of an excavation to cause a reduction in stress

Given the data of Example 10.6. Instead of a load on the surface, compute the depth of an excavation to cause a reduction in stress at the bottom of the excavation of 200 kPa if ρ = 2.1 Mg/m3. The excavation plan area is shown in Fig. Ex. 10.6a.?

(Dimensions in metres) в 40 20 10 20- 40 - 60 --

(Dimensions in metres) 40 20 10 20- 40 - 60 --

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