Question. No$.1$

a$)$ Explain with the aid of diagrams, Dynamic Compaction and its application. What are some of its limitation in application and why

b$)$ Explain Deep Soil Mixing? Use sketches to illustrate $3$ different applications

$[2]$

c$)$ Describe with the aid of diagrams MSE usage and list $2$ suitable applications

$[2]$

d$)$ Given the following;

$[2]$

i$)$ A $10$ Storey building is to be constructed above a site with upper $6$ m of loose$/$soft silty sands overlying dense sands with water table $1$ m below ground surface

ii$)$ A major highway is to be built over $3$ m of soft peaty soils overlying stiff clays with high water table

iii$)$ A bridge abutment is to be built on a $10$ m embankment with steep side slopes $($about $1$:$5$ hor:vert$)$ due to land restrictions

For each case recommend a suitable and economical soil modification technique that will mitigate the anticipated major engineering considerations

$[12]$