$3-2.$ The data shown in the following table were obtained$3-3.$ A $10-$foot by $10-$foot square footing to carry a total load of

$425$ tons is to be installed $8$ feet below ground surface on a

sand stratum. Standard penetration tests were conducted on

the site. Test results were corrected for overburden pressures,

and the corrected $N-$values are listed as follows:

No groundwater was encountered during the subsurface

exploration. Estimate the maximum expected settlement

of the footing. Use Bazaraa's method.

$3-4.$ A square footing is shown below. $($i$)$ Determine the allowable

bearing pressure, using a factor of safety of $3.($ii$)$ Determine

the maximum allowable load on the square footing $($in kips$).$

Soil parameters are below:

$=100l\frac{b}{f}{t}^3$

${}_{\text{s}\text{a}\text{t}}=115l\frac{b}{f}{t}^3$

$c=0$

$=30$

$B=4ft$

$D_f=3\mathrm{.}5ft$

$3-5.$ A $5-$foot diameter circular footing for a new highway light pole is being installed at a depth of

$6$ feet below the existing ground surface. The groundwater table is at great depth. Determine

the allowable bearing pressure $($considering a factor of safety of $3\mathrm{.}0)$ using the following

parameters:

$=120l\frac{b}{f}{t}^3,c^{\text{'}}=100l\frac{b}{f}{t}^2,$ and ${}^{\text{'}}=28.$

in triaxial compression tests of three identical soil

specimens. Find the soil's cohesion and angle of inter$-$

nal friction.