3. Using the principle of superposition, plot the distribution of additional vertical stress and horizontal stress (in

both directions) with depth (from the surface indicated by the black horizontal line in the figures, to a depth

of 20m, in 0.5 m increments), under the centreline of embankment (2) for the loading case of Figure 1. Show

two example calculations (one at depth Om and one at 10 m) and plot the rest of the results.