A$.$ Refer to Figure $7.$ A strip load of $q=50k\frac{N}{m^2}$ is applied over a width, $B=20m.$ Given: $x=9m,$ determine the vertical stress applied to the soil element at point A located $z=6\mathrm{.}2m$ below the surface.

$(8$ marks$)$

Figure $7$: Vertical Stress on a Soil Element at a Point

B$.$ For the embankment loading shown in Figure $8,$ determine the vertical stress increases due to embankment load at:

i$.$ Point A

$(4$ marks$)$

ii$.$ At the same depth as above but at the toe of the embankment

$(2$ marks$)$

iii. At the same depth as above but at the centre of the embankment

$(2$ marks$)$

Figure $8$: Earth Embankment