In falling head test, the specimen length was $200mm,$ the cross$-$

section area of the specimen was $1,000m{m}^2,$ the cross$-$section area of

the standpipe was $40m{m}^2,$ the initial head difference was $500mm,$ and

the head difference at $3$ minutes was $300mm.$ The hydraulic

conductivity in $\frac{m}{sec}$ is most nearly:

a$.2\mathrm{.}27({10}^{-3})$

b$.2\mathrm{.}27({10}^{-1})$

c$.2\mathrm{.}27({10}^{-5})$

d$.3\mathrm{.}44$

Which soil laboratory test requires soil to be passed through a No$.$

$4$ sieve before testing?

a$.$ Liquid Limit Test

b$.$ Plastic Limit Test

c$.$ Sand Cone Test

d$.$ Standard Proctor Test

A $10ft$ wide strip footing is embedded $3ft$ in a silty soil with a

unit weight of $95$ pcf$,$ a cohesion of $300$ psf$,$ and an internal angle of

friction of $15.$ Using the Terzaghi Bearing Capacity formula with a FS

$=3,$ what is most nearly the allowable gross bearing capacity, in ksf$.$

Take $N_c=12\mathrm{.}9,N_q=4\mathrm{.}5$ and $N_Y=1\mathrm{.}5.$

a$.5,870$

b$.5\mathrm{.}87$

c$.1,960$

d$.1\mathrm{.}96$

If a soil has an internal angle of friction of $35,$ what is most

nearly the Rankine Active Earth Pressure Coefficient?

a$.0\mathrm{.}521$

b$.0\mathrm{.}271$

c$.1\mathrm{.}92$

d$.3\mathrm{.}69$

The load settlement behavior of a soil sample is to be determined

from a laboratory oedometer test. The type of soil specimen that will

provide the most reliable load$-$deformation characteristics is a soil

sample obtained from:

a$.$ A thin$-$walled pushed sampler $($Shelby tube$)$

b$.$ A Standard Penetration Test sampler $($SPT or Split Spoon

sampler$)$

c$.$ Trimmings from a hand auger

d$.$ Trimmings from the outside of an auger

In a two$-$way drained laboratory consolidation test for a $1$ inch

thick specimen, what is most nearly the coefficient of consolidation,

in inches $\frac{{?}^2}{m}in$ if the time to $90\%$ consolidation is $12\mathrm{.}7$ minutes?

a$.0\mathrm{.}5$

b$.0\mathrm{.}25$

c$.0\mathrm{.}017$

d$.0\mathrm{.}848$