Test 03&04 Geotech.pdf

7/23/2019 Test 03&04 Geotech.pdf

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Republlc of

the

Philippines

G ILLESANIA

Engine*ring

Review

and

TrainingCenter

Tacloban

-

Cebu

Sitaation

-

A

sample

of

saturated

clay

was

placed

in a

conlainer

and

weighed.

The weighl

waa

5 N.

The

day in its

container

was

placed

in

arr oven for

24

hours

at 105,C.

The

weight

reduced

tq

a

cqngtant

val*e

of

5

N.

The

weight of

the

conteiner is 1

N.

lf G

=

2

7,

determine

the following:

$ituation

-

An

embankment

far

a

highway

is

to be

conslructed

from

a

soil

compacted

to

a

dry

unit

wejght

of

1e

kN1m3.^The

clay to

be trucked to

the site

from

a borrow

pit

is

17

kN/mr and

rts

natural

water content is

5% Assume

G

=

2.7.

18.

-\I'/hat

is

the dry unit

weight of

soil

in the

brnaw

pit

in kN/m3?

$ETA

Test

S3

Uoqe,l*

bg

comqacled.to

attain

a

dry

unit

'.'"'weight

of

18 kN/m3

ar

a wafeiccriteni-ot

7*,n

,liitermiir'eiiiij

ril sample was

found to

have a

volunrle

at

22.3

*m3

iah

29,7 orams.

Tho drv

weicrhl of lhe samnle wxe

24.

A

maist sail

and

to

weigh

29

7-grams,

The

dry weight

of the

samplei

was

deterrnined

to be 23

grams^

What

is the

porositv

s{ the ssil?

rams^

Whai

is th-e

porosity

s{ the ssil?

g

-

/-.1

A.

1.78S

t.

a.ilB

c, 0.7s8

D.

1,618

i&.,zsYo

c

0.751

c.

12"22

n.35%

D. 0.52S

D. 18.66

?,.15.81

D.

12.84

D.

126

D.

52,7

D.

0.0?9

,

,

^.

16.19

'8.

18.21*

C,

17.15

D.

is.?i

-

'

:19.:

r,alculale

the

volume

of clay

from

ihe

borrow

pit

requirer

cubic meter of embankmeni.

,

X 1.2s6

m3

t l.ttz mt

c.

1.354

rn3

D.

1.411

m3

'20

I

lf

the

borrow soil

uvere

{* be

comoacted

to

attain

a

dr

i

4

5

Effective unit

weight

in

kNtm3

,.9.96 A

86S

$ituation -

Laboratory

tests sn

a sail sample

yielded

the

following

informaiion:

G

=

211,

G.

=

1.22, MC

=

l5%.

6.

lAllrich

sf the

follouing

mast nearly

gives

the

void

ratio af

the

soil sarnple?

A. 0,62

.

0.62

B

A]8

C.

0.87

Which

of

the

foliowing

most nearearly

gives

the

degree

of

$. 0.35

saturation

of the

soil sanrpl*?

A.

78.2%

8.

33.9%

2::45.2Va

O.

42.8Q/a

1i/nic*

*f the faliowing

rnost

nearfy

gives

the

porosity

of

the

soi

sample?

A.

936%

8 47.8Yo

C.

54.6%

43.8slo

amount

of

water

required

per

cubic rneter

cf embankment,

assuming no

loss

of water during

transporfatton

|

331-iters

B.44liters

t

Z?Lilers

D. F5liters

21.

A

samfle of

saturated

soil

weighs

588 N and has

a

vglum*

of

0.03 m' lf

the voids

ratio

of the

soil

is

0.75,

determine

tlre

specific

grauity

of

the

solicls.

*2.75

B_

2,54

Q.2..87

D. 2.86

22 A 50

cc of moist

clay was

obtained

by

pressing

a

sharpened

hollor,v

cylinder into

the

wall

of a

test

pit.

'The

exlruded

s'amole

hacj

an initial weight

of

85

grams

Atter

oven-dryinq rt

weidhs

60

grams.

lf

G

=

2

70,

detern:ine the

degree of

saturatioi

of

the samDie.

A. 87%'

B.

33%

C.

80%

6.

gOoto

23 The mass

specific

gravity

of

an undisturbed

soil sarnple

was

determined

to be

1

96 at

wa{er" content

al

16%,

The vcid

ratios

in

lhe

loosest

and densest

stalss were

determined

to

be

0.SB

and

0-42,respectively

Determine

the

relative

d*n*ity

af

themass.G=2.7

t{.:61"3%

8. 52.Vah

C.

6S.4%

D. 74.5o/s

t5...A.675

g.

A.322

Bulk

unit

'rueight

;n xttlm3.

A.

21.33 9 1977

Dry

r.init

weight

in kN/mr

A. 16.25

B.

'r7S7

c.

13.56

'c.

fi.42

situ soil?

A.

f.51

:D.,

A.42

C.

A.27

14.

Which

of ths'follnwing

most neariy

saturaticn

of

ihe

in-silu

sail?

A.

75o/a

"8.

46Y*

Situation

-

The

moist

weight of

0.1

ft3soil

is 12,?

lb,

The moistsre

*ontent

of

th*

ssil

i* 12%

anej

the

specific

gravity

of

soil solids

is

2

72.

Determine q,,rg lowinS:

I

The

dry unit weight in

lbift".

A.

102

,.Y,

105

C.

118

{,

lu{

ir/

,VV

L" I l(

10.

-The

degree

of'saturation in

percerrt.

* 58.5

B.

55.4

C.

63.

_

* 58.5

B 55.4

C. 63_1

11.

The

volume

occupied by water in

ftr

-'-'.,A,-0

fts''"

--51"a]5r3

""'

ji"'o.ozr

$ituatian

*

Given

the following

characleristics of

a

sail

sample:

Voiuae

=

0.5 cubic fi.

Mass

=

56.7

oound mass

The solids

have

specific_gravity

of 2.69.

Afler

oven

drying, the

mass

of

the

soil was 48

7

oounds.

12

Which

of the

fqllowing

mo'si

nearly

gives

the density of the

in-

situ soit, in lb/ft"?

A 1042

A

pA7

C. 1231 D. 113.4

13.

Which

of the

follswing

mo$t

neady

gives

the

porosity

of

the

in-

0.32

the

degree

of

Situation

-

A

fully

saturated

clay

sample has a mass

of

1,526

grams.

After

oven-drying,

its

mass

was

reduced

to

1,053

grams.

The

specific

gravrty

soil

particles

is

2.7.

't

5.

Calculate the nattrral

water content

of

the sample in

percent.

A. 52

'8:

45

C.

36

D"

40

'16.

Calculate

the

vsid ratio in

percent.

A.

85

8,

111

C.

136

Caleulate

the

porosity

in

percent.

A ia R aA- {d,

t,Q.:61ok

D.

35%

\D'.;121

D.

5S

,f'

JEr-PrPsqt

?-

**\I*-NTE

.J?

]'l',lrys*rftev.*:.#r

1.

Water

content

A.

3C%

8.

2*a/o

2. Vaid

retio

BqABp

of clvll

Er\lp.tNFSzu#c

TFST

03

*

ACHIFVEMSNT

TEST

{GHOTECH}

$aturday,

June 29,

2013

illqT-FUC,TIOlt

Selec;t

ihe

cotrect

answer for

eryh

o{ ths

{ollswing

questions.

*.Vqrt

grry€ggw for

eadr

item

by

shading

the

box

trJ$p?l ,tg g

tlg{q

qf

ygq,gfqice

gjlgt

e1r3ygfqpgtFty$d srRlcrlY

NOEHSIREE

ALLo1fr€D.

ue6

pencit

fo. r

onry.

-

NOTE:

lA*-{CNEV[R

YOU

CAN

ENCOUNTER A

CARET

T}

S$N,

IT

MTANS

EXPilNFMTIATION

25.

Saturated

silty clay

encountered

in

a deep exeavation

is

found

to have

a wEte{ content

of

28%.

Determine

unit weight

of

the

clay in kN/m'

Assume

G

=

2.7.

,u;

1s31

B"

18.54

8.

20j4

C

19.97

26.

A

soil

mass

has

a

porositv

of

38

percent

and

deqree of

saturation

of

92

percdnt.

Ttie

specific

qravitv

qf

the o-articles

is

2.71

Find

the

specific weiqht bt

tne

sbit

n'dss

in

ocf.

A.

134.8

B.

i12.9 t. SA.Z

il..

nA'.t

r27j

The

water

table

in a deposlt

sf

sih is

towered

from

a depth

of 3

"-

'1

m to

a depth of 6"5

m.'

Ali the

silt is

saturated

even ihirlfre

water

lable is

lowered. The

water

contenl

is

25%.

lVtriefi

af

the

follawing

mosi

nearly

gives

the

change

in

effective

pressure

at-a depth of

1S

rn,

on accsuni

sf the

lowering of

the

water

table?

A. 47.7

k?a B.

31.8

kpa

I.

g+,S

kpa

n.

36.3

t(pa

28 The

water

table in a deposit

of

silt

is lowered

from

a deprth of

3

m

to

a depth

of 7

m.

Al

the

silt

is

seturated even

aher

the

waler

table

is

fswered.

The

waler

eonient

is

250/0.

Which

of

the

tollowing

most neariy

gives

the

change in

effective

pressure

at_a depth of

10 m. on account of

the'lowerjng

of the

water

table?

j.

39"2

kPa B.

45.3

kPa

C.

53"2

kFa D.

32.7

kPa

A.

48

B.

36

''4 s5



CiLL

[5AI'iiA

E"rS,

neEnnS Revievr ,rno

Irairring

Centet

cohesrortiess

ioil

Find th*

nearest

value i* the t*tal efrrth

thr$st on the

wall in

kl{

per

lin*ar rneter

i{ th*

soil is dry.

8.

83.6

c. 37.5

fi.

76.4

Situ*iion

-

The

results

*f a

ccn**iidated-drained

lriaxiai

test

ccnducted

on a nai-maily cor-'isolidated clay,

aie as fcilows:

Chainb*i

coniining stress

=

23A d?a

Deviatlr

sire$s ai

f*ilure

.

350 kPa

i2S

i

Calculaie the antlle

*f

friciicn of the sr:il $affiple.

-a'e

zq.sz

E,' 21.a2"

c.

18.iz' *.

19.97"

'i30

l

Calcuiaie ihe

shear str*ss otl

the ferlure

plane

---:

A 140

kPa

^5

16S kPa C. 13{l

kPa

D,

J45

kPa

13Tl

Catcutate the

e{f*etiv*

norrnal

.stress

on

.lh€

piane

*f

*-

maximum shear.

A. 2{}7 kFa B.

5*4

kPa

C.

428

kPa

l&"

3$3

kPa

Situation

*

A

retaining wali

5

rn

high

supppris

cohesiorrless soil

having

a dry

density

of

1570

kglm"

afigle

of shearing

resislance

32'

and voici

ratio

of

0.68.

The surface

ol ih* spi]

is horizarrial arrd ievel wrth

the

ioiJ of

the

wall

lrieglecting

wall

fri;iron

artci trsitig

Rankrnes

Foim,ria

foi aetive

pressure

of

a1

JJ.

Find lhe

*e&re$l

valu*

tc th* thrusi

on the

lvall in kN

per

iinear

metei-

if c.*"' irg t* inadequate

drainage,

it;is

waterlogg*4

io

a

lev*i cf 2 5 rn below the surface

.

A"

51"2 4, *e.A

C.

?2"4

D.

S4.2

Flnd

th*

nearest vaiue

ta

the

height abov*

the

base

*f

ihe

wail, ihe thiust asts during

ihe waterlogged

condiiitx.

A. 2"5& m

B.

1.42

rn

E

214 m

O.

1.85 m

$it*atian:

A lully $at*ratrd clay siernp'e

fta*

a

ln*ss

of 152S

Craiils.

Afier

r:rven-drying,

its

ma$s

lua$

redsced

by

2S1

gierris.

The

specific

gravity

*nil

parti*i**

is ?.S$.

35.

Ci*lculaie ti"re rraturai

water cotrlent Df the

sarnple

ir:

p*rc*nt-

A.

35.6

*.

287

{g:

22

6

tr"

1S

S

36

Caiculate

the void ratic

rn

perC*nt.

{8t

60.5 B

06 t.

54.2 n

76.9

37. Xaieulate the

porcslty

n

percent

A. 43.S

'8.

32.4

C.

4s

'&)37

7

$itqs#sn

-

The

s'and shourn

in Figure Stu{-3.212}has

vcid r*tio of

S.S* and

Q

t

2.7A.

H'

=

1.5 ril. H2

=

3 m, and

H:

'

S.4 m

38.

Determine tlt^s

n*srest

vaiue

te the

*f{eciive

unit

weight

cf

sancl

in

kNimr

n-

s.6e-

F.

1i.s6

frn.az

n.

ez1

39.

Detern:ine

ths near**t

v;*lue {o

the

lot;:l slress

at

X

in kPa.

--,-#,

tr+ B 7Q"2

.

c.78.*

D

82.3

r4Cl

'D'eier-rninc

the

nearest

r:alue

i*-the

effe*tive

slress

aFX

in

-'

hPa,

n.

27.3 3. 32.2

c. 36.5

D. 29

S

grcund

surfece

t

I?Jl

itVfiict"t sf the

fsllowing

gives

the

effective

stress at

point

A

'*-

A. 11.skpa a.

tsl:ipa

c.

14$kFa

D.

14.?kFa

tF)ll

rnnrcrr

of

ihe

tollovrinq

qives

the effective

stress

at

porol

F:

.28.5

kP.r

B ZZ"q\pa

,.

26

1

kPa

D

32li

kPa

Figure

$M-3'X2)

Situatisn

- A

s*iJ

pr*file

consists

of a

clay

lay*r

unclerlain

by

a

sand

layers

aa'shawn

irr

Figur*

38.

A tube is

inserted

intn the

bsttoff

-sand

leyer

and the

water

ievel ris*$ ts

1.2 m

ab*ve

the

:.28.5kPa

H.T7.qk?a

J.2S'i

kFa

D'

323kFa

'+:J

Wnrcfr of the

followine

qlves

the

effeclive

stress

at

poini

C.

*'

f,-40 5

kpa I

3BE

iPa c.

45

7

kPa

D.

5?

3 kPa

'

'

t.4c

5

kpa

B

3831Pa

c.

45

7

kPa

D.

52.3

kPa

'

,

Figure

38

Situation

-

A 15-m

thick sr-rbmerged

saturated

clay

layer

has

water csntenl

of

48%. The

specific

gravity

oi

ths

solid

,

particles

is 2 72.

44

Detemine

the spe*ific

gravity

*f

tlte sci

maes,

'

*

A.

175 B

',i.85

C.

1.67 A. 2j4

45"

'Determine

the totai v*r"iical stress

at

th*

nridheight

*f

the *iay

iayer

in kPa

"

A

213.47 B

158.74 C. 25S.92

t.

128.4e

146.;

Determin*

the

effeclive

verticfil

sirese

at

ih* b*ttam

*f

the

-

clay

layer, irr

kPa

A.

78.v6

B.

54.S e.

105.8

. {}

124"fi

Situation

*

A can**lidaled-draintsd

triaxial t*st'vras

conducted

cn

a

normally eons$fid*ted

ciay.

The

reculi* ar*

*s

f*ll{'tvs:

Ch*r-nber

confining str*$$

*

180

tcFa

Deviatcr strress at

failurc

*

31S kPa

?Zl Co*prt*

the angle of

friction

of-the

soii

sample

it1

{tegrees.

:

A 3124

p

27.5s ''

c"

25.3s

fr.

22.47

1461

Determine

the shear stres*

on

tlre

faiiure

plane

in kPa.

'-"'

A. 15:

B.

1S?

q

137 fr^ 142

*9ll

Campute

ih$'efe*tivc

nsrrnai siiess

iil

KFa

cn th*

plane

cf

'

'

maximurn

shear

I

*

]*t

-.18.5

kf,,llm3

7

rn

]*r

*

19 kN/rn3

y*, =

i./

kNrrm3

*.

335

3 463

c.

*3J5

n.

387

kOi

e

ground protile

consist

of

2

m of silty

sanci

underlain

by

3

m

'*-

of

clay

The

ground

water

tabie

is

3

rn

below-the

grourrd

surJac'e.

The

s?nd

has

a

unilweight

af

f4

KNlm'

Tde

ciay

has

a-unit

weight

ol 16

KN/rn"

above

the water

taLrle and 20

Kt'Jim' beiow fte

wat*r

tsble.

Deielfiline

th*

total stress

ai

the bottom oi

the

clav {aver,.

A.

6$KPe fr.

72'KP'a

'[.

84KFa

t].

$8KFa

$ituatinn

-

A

soil

dsp$sit

is shown

in

Fig*re

3?.

The

ground

water

iable,

i*itrfilly at the

grorrnd

sut-face, wa$

lovr'ered til a

depth

of 25

ft below

ihe

gro'.rrrd

A.fter

sr.rch lowering, the

degree of

saturaii*n

of

t|:e

*and

ebtve

vrater

lable

was

lorarer-ed

Io

20%.

51 .

Whi+lr eif

the

foliowrng

grvec

the

vertical

sffeetive

pres*ure

at

the

rnidheight of the

clay iayer befare

lowering

th*

wat*r la*le,

in

psf.

.r\

A 4,830 I

2

4s0

p)

+,:rso

D

6,75C

i52r

ifUiricn

of tire

foilowinE

gives

i6c

vertir.ai

efective

pressure

at

"-

'

the

rrridheight

cf

ths

clay

iayer

afi*r

lowering the vraier

table,

"

[oi *

B

b,rzo

.

c 4,7G0,

5s3o

l-Sji

tnmicn

of

tne

Tfiitowing

gives

iire

verticai effective

prsssure

'"

'-

when

there

i$

nc

r,^rat*r

in ihe

sand

layer, in

p*i"

&

6?10

C 5180

B

7

45A D.

4.660



9J:

q:l:I

rt-Wlts

cT te'-*

laver. in kPa.

A:

365

g.

334

c

287

5?.

Det*rmine

the

effective

vertical

*trese

clay

layer, in kPa.

A 200 B 185

C.

114

Situatien

*

Figur* 34i08)-1

shows

the layer*

af $oil

in llibe.ihat

is

1*0

mm

"

100 nrm

in

cr$ss-secticn. Water

is

supplied

to

rnaintnin

a

con$tani

head difference

of

300

mrn across

the

sample.

'lhe

hydrauiic

*':nductivitiet af

the

ssils

in the

direition

c;ifiow ttir*ugh

them are as

follsws;

c",;l

OUII

A

L

S0.

Calculate

the fiearest

vailte

tro

the total

flcw

through

the soii,

n

ccy'sec.

A, 0.1?4

B.

0.018

.CI

0.CI81

D.

0.036

S'i . Calculate the

nearest

value to

th* value

af he

in

mrn

A.''

3*5.3

g.

247.5

C.

154.6 D.

100

62.

Cetculate

the nearest

valil€ tc

the

vah"ie

cf ha

in

mm.

s. 396

at

th*

b*lt*m

of

the

p.

138

k

qcm/seg)

1

,

1A-'

3

x

10-3

4.9

x

1Q'a

*T*

I

i

I

5Gft

I

I

I

I

I

,t

-?*-

l

25'ft

I

_i*

Sltu*ti*n

*

The ccii

in

Figure 25

h**

e void

ralis

slf

0.50 and

G

:

2.70.

fu

*,

1.$ m, hz

=

3

m.

$4. Which cf

ihe

Joliowing

is

cicsest

to the effectiv*

unit

weighi of

sand

in

kN/m'

*{Ai

1524

B

1o:14

c. 14.2r

a

11.12

{

55{

\{irrch

of

the

folloiving

ia

the clo$est

io

the effectivs

$tress

*t

'

--:

Doini A in kPA

Ji

ii.:s

e

ft

64 L zl.4i

D.

oz;e

lffi.iv'ltricf'

of

the

following is clnsesl to critieal

hydrauiic

gradient

**

of

sand

(f'-rr quick

condition)

A. 0.*5

B.

1.S7

&.

1.13

D.

1"54

$ltuatien

-

A

20

nr

thick

submerged

saiuraled

clay

layer

has

water

cantsnl

at 57%.

The

-specific

gravrty of

the

solid

sarticles

is

2.84.

57.

beternrine the densitv

of

the clav

in

kc/m"

l,

vot

B

1852 c

'1614

iJ.

1528

58.

-Determine

the tatal

verlical stress at

the

bott*m

cf

the

clay

Fig&re

SZ

t

287.9 n.

2S0

c.

254.3

D.

185.4

wate 'SuPPlv

Figl'rs

g4{o$}-i

Page

3

$ituation

*

A

bar*hcle

log

profile

in

a construetion

pr*ject

is

shswn

in

Figure 45.7(1)S02.

'll1e

proposesl

*$$strilction

wiil

imparl

a

nei stres$ of

12

N/cm'.

U*e

*nit

ureight

*f

water

equal to 9.81

kN/m'

63 Determine

the neare$t value

to

th*

buoyant

unit weight af the

clay

in

hNlm'.

t

8.43

B"

7.63

C,

p.S?

fr.

1*.12

ti4"

-Setermine

the

nearesl

value tt the effestive

,rerticai

stress,

in

kPa,

at the midheight

oi tha cfay

layer.

A.

187.$

8"

19C.8

Q"

178.4

D.

162.3

65

llJhat

is the averagn

*ettiement

af the normally

consotidated

ciay

layer

in cm"

C*mpresslon

ind*x

C.

=

0.009{LL

-

1fl).

A. 27.1

tl.

25.4 c.

23.4

whers;.

=

"dit

leighi

of

soil

particiFi

0. 2s.4

glr

*n

CI *94

Figure

45.7(i)Sr02

'

Situation

-

The

sorl

profile

on

the

proposed

land filling

prclect

is

shewn

in

Figure

32 2(9).

The vrraler tabi*

is

?

n:

belovr the

grcund

surface.

A ? 5-m

thick ianqJ

fill is

tc

be

pla**d

*v*r

the

existirrg

ground

surface.

66

What

is

tf€

neareqt

vair.ie

1c

the

efferetive

unit weight of the

clay

layer

in

kNim'"

A.'1A.4

B.

S6

1.

1*.9

D.

12.5

67.

Wh*t

is

th*

nearesi

value to the increas*

itt *sii $lrs$s dile

t*

the nronosed land

fril.

in

kPa?

a s:

z

4.

++.s

c

36.8

68,

i.tJhat

is the nsaresl vaiue

tc the s*n*oiidxtion

*ettlem*nt tf

the

clay

layer,

in

mm.

,^

88

8.

9S

C.

77

D. 6$



GILLESAj',J1A

Fnginee.ing

Revi*w

and Training Center

-?-+

I

j

:.5 m

1

{

I

r{

4ftr'-

I

I

+

-r--'

^t

llm

I

-J--

$ituatirn

-

Cl*ssify

classi*caiisn

$y$lem

fi9.

What is

th*

el*ssificatisn

of

*sjlA?

t

A-1-b(Cl

ts

A-1

a(0)

,,Cj

4"3(0)

/C

V'/hat

is the ciassiflcation of Snil

3?

iAlAT-6(21)

B A-5(3G) c

4-6(21)

7 i.

YVhat is the ciassification

of Sorl C?

A. A-1-bi$i

*. A-3ifi)

C.

A'1-a(0)

Figure

SM-45

Tairle 3.1: Cia$cifisatiiln 0f

Materisls

A,3 A.24

A-2-5

A"?-6

.A-2:7

50 max.

30 ma.r. 50 max. ;'i

m:n.

15

riax.

35 nrax.

'lf

max.

35

nrax. 35 ma;.

35

max. 35

mar

'Fiopqsed lgtd.fill'.

.

.

.

r-

*,1./,sl<Ellr:

.

."

'."

.

Figure 32.2{9)

the following

:oils

l:y th*

AA$HT0

.

Use Fig*re

S$,4-45.

Descriplion Soii

A

$oit

B

bori

u

Perceni iiner than iric. 10 sieve

Fercent finer than i',lo 40 sieve

Pereent finer

than

N*.

20*

bttrvtr

l-iq*id limri

Piastlc

Limi*

4*

to

s

I'lp

I

{JU

82

?a

4Z

90

{)U

46

?o

ipercenlage

;.:assitrgi

Na. 10

Nc.4c

I'io. 20s

Charectsrlctic$

.11

traclion

sas$ing

i.ir,.

40

Lieuid iimit

Pl4$ti+ily

ifldex

Usual

iyles

ol

*igriiicani

e**slilu*nt

;-ilatenals

Oeneial subgrade

S

max.

tlF

$llueiragrrrerrts,

Fl*e

gravel,

and

$ard

san*i

fr.

p,-?-4{fi)

t

e-Etm)

ib;

e-e'sii:;

4il nax.

41min.

40

max.

41 min

jC

qrax

l0 max,

11 min.

11

fiin

S,liy

Or

crayey

gravel

and

sano

Fxcelle*t

lc

gsod

44

A-5

A.S

A.7

-5'

36

min,

36

min.

36

rin, 36rnin

4l

max.

41

min.

40 mar.

41

min.

'10

r*ax.

l0

max.

11 nrir.

11 min.

$iity

scils

ClaYeY scils

Fair io

psor

Sr*ur ciassifieation

No. 10

Nlr 4tl

Na 200

Charfictsristics

cf

haciiqn

passirg

No

Ljquid

knit

Plasiiciiy inriex

$sual'tr ps* al si6nitiearit

constiiuent

mateiisls

Ge*eral

$ituati*n

*

A

layere*

coii is

shown in

Figure

2?-14fi4)521

.

?2

Calcul:rte

lhe equivaient

coeffrcien{

*f

permeability

in

thCI

hoi

reontal drrec_tion,

in

crn/seco

R 8 521

*

lC1

@,8

025'

104

B. 7.458

x

10-a E. r.'t:s'

"tg-o

7-c. Calculate th* equivalent

r*effici€nt

of

permeability

in

ti:e

v* 'ticai

direcli*_n.

i*

crn/s*r.

:lyj

3756

*

10:

C.

5.247

x

1A's

E.8254x10" D

4128,10

74

\r'Jhai

is the

ratrp

of

(k6)"o

to

(kv)"q?

A.

287 Vi 214

C.

18.5

D.

15.7

.

roF,c

a

rigrrre :2-14t04)521

**r

N D*rr



,*@L

gmmwiqpt*"s

\

ffiggS#s

E*

u**sr

R*pubiic

0f

rhe Piiiiippines

€ILLESANIA Engiueering

Revi*w and

Training

Center

'

Cebu

-

Tacloba:r

BOARD

OF

CIVIL INGIN[ERIN6

fi*Y;;5:ru:ff*

f

grrrP'sctu

P

\rur;

NrIE

J?,

STT E

?est 04

ENCititNTitR

A CARiIT

(^l

stcN, iT &{'r,-ANs IXFotr{ 1i'l'l'lATlorr*

1, A

father and his s{Jn

can dig

a.well

if tiie

l*tlier

works

6 ho*rs

and

hi:- scn

u;orl<s

1?

hcurs cr they

can d{r

it iirho

fathcr

works

t

hours

and

tirc .qon wr:rl<s

B haurs.

llorv

iong wlli

it

taka

fbr the

son

rc

dig

thc rqell *i*ne?

@

5

houru

B.

1{.} hcrurr:

C. 15

hr:rirs

+? 20 hor,rs

2.

Give

l

the

{:qr*alio*

of

a

par*bola

3x

"p

2y:

-

4y

*

7

=

0.

Lacate its

4"

goat

is

tied io

a corncr

of 3ii feer

iry 35 feet

building. [f the

nrpe is

.|0

feet lang

and

the goilt

can

reai:h

I ft farther than

the rope l*ngth,

what

is ihe nraxinrum ,rlc;r

thr'${JaL cai'r .

uvcr, in

ft;?

ll.

,4{}84

H.

+323

L. 45tt:l

D. 37hl;

.A.

pyrarairi

with

a

sqaare

basc h.rs

ari aliirude al 27

crn. lf the erige

of

5.

Wl:al is thc

mreidli: terrrr

in thc e.r'pa*siln

of

{i:"i

3x;tt

(&

567*"t,

S

Ezot,"'

c.

-/ax1z

r,.

z7t)

iilihat

is thr:

riuoti*nt rrhen

,1

-*

8i ir:

rlivirl:rl

hv i:?

c.

7ax1z

lJ.270xE

Whar is lhr'.lllc,lii,nl

rvhcn

.1

+

8i

rs

divrdrd hy

i:?

A.

ei4i

'Q

*.'ti

L. B 4i

D,

i+4i

C.

8-4i D.

-A*4i

{Jn a certain e-xanrinatisn,

a

slildeni

must

al:slrer S

cut nf

12

questia*s,

inrluding

exactiv

5 of the flrr^t 6. In irow

many

1'ays .an

iie answer

the

examlnatiotl?

l. rca

B.

z4a

c.

6rl i).

q0

thn basc rs

16 cm,

calculatc

tlre'rrrllrme

cfthe

pyramld.

/i.

lHtg

tJ

277{: C

't7t,5

fr}

Z:10,t

c

a

tal1

60-cm

di;rrneter

ryli

atcr. If

cach

rnalble

is

i,5 em in di

depth

of;futel i*

cm?

.t175

€.

23.12

circumscr bed airo

{-}tth{:

0riagcx

in sq. cti.

\,.

L

3tt

ur

dlficr*n1.

coiarcd

flags

c;i

I"law

niany

signals

ca

cf

one

or

nrore flags?

;

t54

manv

dcgre*s is 5

ner

with

20

+.

E

Situation

I.

-'l'he

ij,:w.c

.roofiruss

shown

'

carri*s

the

given

loads. The

wi*d

klads

are

perpcndtc*ia:"

l*

fhr,

i*clined

meml:ers"

iletermin.;thc

loilowing:

ai.Tlre

rr.rgnrLrrdt. rrl

thc

result-an

L

A. 11.24 B.

'.73

A. 4,"S

m to th* ieit of A

L

q..P,

m

ic the right ci

A

1.1. ODr:terminc

lhc

elfective stre

A.

5010psi'

8.

4788psl

Situation

2

-

The

cantilever

slrr:wt

is

builf

into a lrra

thick so

lh;il ii rests :rgainst

p{rints

A and B. Thc

bcam is

'

12 ieet lnrrg

anri rveigl-:s

fl00

lb/ft.

A

cancentratcri loitei

r-lf

200$

ltr is

applied ;rt

C.

12. 0Conlprt{l

the reaction

at

A

in lbs.

rAJ I560ti

B.

i

340i)

13.

?Lcmputc

thr:

rrartion

at

F

56

A.

275

A c{rntrai

bca

the

ir

c

lhr

r=dir

A.

4.5 c

21.

'fhc

sides r;

Find

the rndi

T71

lrre

shows ihe

loadilg

due

tc

ufe

tirat

is

upstlcirm

of lhe flood barrir:r

gle

ct tlie wcight

of the

structrrra,

Determine thc

lbilowing:

2?.

'T'Thel.e

action

at B in lcN

n ?0? c

icle*tiral

smailBr circles

are Lo

aily

tangent l.o each

* her

and

nec

*l lhe central

ci::cl*.

What is

C. 5.5 crn

l].

6 cm

are a

=

3

sr,

b

*

3 m,

c*

4

m,

anrl

d

*

4.

m.

bed

crrcle

t. 1.84

r).

2.76

nak;es r,r'ith the

.)/

t

g

9.

10.

rs?

fr GIA

right of

A

ill

rib

*atio

f,h,,

s4,vat

3rti

t

Situation 2

-

A

da1,

iaver

25

lecl

th

:riain with

50

sarrcl

{G

=

2.71}

'[]ic

warrr

tablc is 2N ieet

belorv the sanil

srrrface.

Tlre

saturat*d unii rv*ight

ef

ciay

is

l+L

pc{

bei+..v thc rvatel tubh

itas

a

unit

w'cigl:n

i:f

12$

pcf

.

7)

tl'le

water l-abJe

has

:lveragr

moi$tilre

collent

of 2

thc

sand

n as frrurrd

t*

have

a dry unit

we iflht

of 92

{-,

525

D. 963

23.

:;,'l"lre

rr.dction

at A

in

klV.

gA:

lse:

'Y.

saz

c.

1247

a. 1176

t3The

angle

in

degrees

th*t

lh*

reacti$n

at

hr:rjzontal

axis

[pr:siiive

countcrclockrvise]:

J.

-18

H,

-15

{'..

-21

D.

-36

iri*d

tire

sum

o{_tire

finite

scqucn**

Bl,

54, 3b,

_..,

L6.

t\.

221

s)

ztt

(.

233

tt

?.74

\{hrre

ir

the

rriiitcrcf

{hc

curvn2xr

+

lyz

-.

.y

+

gy

6

=

0?

_-

,

,i

{4,-5J

B

(5

+J

G

'

,,

i'iu)

"r-it,

Ztrj

;

27

i

A

itone is

dropped

down

a

ra:ell

and

5

sec

iater the

sound fif the

*

splash

i>

heard.

lf

t.he

veiccity

*f sr:uncl

is 1120

fps,

how deep

i

thr

w

cll?

.

A.

421

ir

B.

287 li:

d. 17Bft

&.

353fr

'lB,

i'ailtts

A

rnd B l00U

m d[)art

]iri

piottcui

iln

a

:tr.aight

highway

'-

runningeasl

and

lvest.

From

A.

t)rc

be;ringlla

towerd

is 32.

Wof

N

and frorn B the

tre;rring

of

ii

is 26"

N of

fi.

Whrt

is rhc

ncarest

ciistance

of

tower

{l

tc

the highway?

A.

567rn

fr.

321

m {.

43?-m

fil

zzr

g.

836

Delerr::ir-rc

th,e

irnit-weight of sand aboye

ihe wa

A.

i15.7

licr

@

10.q

p.l

C.

t24.7

tc{

ptr*

l2rl)rtr.rrniti,

the

void

ratirr

nf

rfu'

r,utti.

{

E

',

}

A

(jl.Str,t

t].75.6t/r

ogtrqy;,

{

w3'f,

lay

layer

)7,4i

+-*;

c

t).

C.

,"

I24BB

r.6200

in'{b';^

A"

t3400

@

rz+aa

r62A{}

i56$il

{r$qr,

r"/t$q

nM-zae

rrtc

ofuryp

2o

1n?t

in

Fio'

if

a sig

e snialicr

OThe

ilciinaticn

*|i.il<l

res

*7

ttt,z

B.'{)z.t

5W1l."."

ri

iil ihc

ri:sulteni

5.

374

tn



29. A fnrce

*f

6{){} }J

:clirrg al .J2''

i: cc*:hjnerJ

with

s f;rct:

*i

4lliJ N

a{'tjnE al

Zit',

. W

I}.,1

is

thc

rcsLtllilni lrji'cc in N?

,4 A-)

t

R

7$:3

t^

'rti7

i\. .;

6tt'+

$itn*ti*ii

4

-

?hr

lci,r:: 3(

oi'tirc

rtil'f

icg dcrrirk

rirown

i; conlai**d

in

.

the XY

piane.

'l'hi:

niali.

AB

il

vcrliial a*rj

:'csts

in

a

rcckr:i

rl A'

Pltni: A

atrr-i

Ii

;:"u

ji1

tiif

;ailc

i-iiliiz*niai

plans.

Llcttftl:ini

the

iuil',.r'ilrg:

,lU

i,;

'r,

r e i'r

tsg

ill

irl

\rw::

n:

A. 934

r.

612

q.

5i5

A. 786

31.

?larq-'r il

l,:g 8D

i:r Hewl.;r:;.

.A.

61? 8,

834

t,

]86

D.

ii5

li2.

.$T'l:*

]LcoitlanEnt

t:l

f

ltr

i-'e;ilritg

;-c;cii{in

al

A

tn Fis:rrl*lrs

L{t

&.

1875

{1. 5*0

{}. 1275

4*.

lYhat

iire

tllr

coordinat*s nithc

ccntel"

of

lhe rulYe

xr

.

y2

-

2x

-

4y

-

A.

{-1,"r1

1t.

{"2,-7.)

e"

$,7}

l.}.

i2,li

A

wr:cdcn

ionr

rif alllluiie 6iJ cm is

ir:i

bc

sa',t'ed

illn

Lwi.r

p;il"ls

al

rqu':l

we ight.

lilw

fer lt*m il:e vertex

shouiil

i:he cui.,

pn..llle1

to ti-is

lr.t:t'.

hi rnaCc?.-

2

,17

.h4

mr

rE.' 12.3o

cm

f,.

35.,11

cnl

L'. l-8.?1.

.m

-llhree

:iph*rr's

r:1' radii r, 2i, attd 3r',

r'i:spe":li"-*1y,

i'r*

rnelted

anrl

l".ffied irio

a

ni:w sphi:t'r. \n/h;i.

is

the srtri.;lr.-e area r:f tiris sphstc?

A. t{i3.Sr'z

il. ?8.5r:

t.,

l'25.4rt 4.

t3g.tr't

49,

Tlr*

lii:'c*s

2{i* N,

500 il at;,j

'i0{t

i{

arc

ilt

cqiriiihliiint.

'vYhat

is

tht

arrgit

l:itlvv'een

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