QUESTION $2(25$ Marks$)$

Table below shows the site investigation data obtained for proposed construction building.

Evaluate the primary settlement and proposed two methods with comparison for ground

treatment.

Table $1\mathrm{.}0$

Table $2\mathrm{.}0$

$(25$ marks$)$

Depth $($m$)$ SPT N$-$value Typical soil

$01\mathrm{.}50$ Clay

$1\mathrm{.}5-3\mathrm{.}50$ Clay

$3\mathrm{.}5-4\mathrm{.}52$ Silt Gravel

$4\mathrm{.}5-65$ Clay

$6\mathrm{.}0-7\mathrm{.}56$ Clay

$7\mathrm{.}5-9\mathrm{.}07$ Clay

$9\mathrm{.}0-10\mathrm{.}510$ Clay

$10\mathrm{.}5-12\mathrm{.}011$ Clay

$12\mathrm{.}0-13\mathrm{.}519$ Clay

Depth $($m$)$ Typical

soil

Specific

Gravity

Moisture

Content

$(\%)$

Void

ratio $()$

Liquid

Limit

$(\%)$

Compression

Index $($C c $)$

Coefficient of

Consolidation,

m $2/$year $($C v $)$

$01\mathrm{.}5$ Clay $2\mathrm{.}48744\mathrm{.}9151\mathrm{.}117036570\mathrm{.}423$

$2\mathrm{.}3$

$1\mathrm{.}5-3\mathrm{.}5$ Clay $2\mathrm{.}48744\mathrm{.}9151\mathrm{.}117036570\mathrm{.}423$

$3\mathrm{.}5-4\mathrm{.}5$ Silt

Gravel

$2\mathrm{.}48736\mathrm{.}1750\mathrm{.}899672--$

$4\mathrm{.}5-6$ Clay $2\mathrm{.}48731\mathrm{.}0350\mathrm{.}77184530\mathrm{.}369$

$6\mathrm{.}0-7\mathrm{.}5$ Clay $2\mathrm{.}48730\mathrm{.}90\mathrm{.}768483530\mathrm{.}387$

$7\mathrm{.}5-9\mathrm{.}0$ Clay $2\mathrm{.}59733\mathrm{.}260\mathrm{.}863762350\mathrm{.}225$

$9\mathrm{.}0-10\mathrm{.}5$ Clay $2\mathrm{.}5832\mathrm{.}460\mathrm{.}837468340\mathrm{.}216$

$10\mathrm{.}5-12\mathrm{.}0$ Clay $2\mathrm{.}5832\mathrm{.}40\mathrm{.}83592350\mathrm{.}225$

$12\mathrm{.}0-13\mathrm{.}5$ Clay $2\mathrm{.}5819\mathrm{.}760\mathrm{.}509808380\mathrm{.}252$

Table below shows the site investigation data obtained for proposed construction building. Evaluate the primary settlement and proposed two methods with comparison for ground treatment.

Table $1\mathrm{.}0$

Table $2\mathrm{.}0$