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8/18/2019 Ias - Civil-Engineering_2 - 2012
http://slidepdf.com/reader/full/ias-civil-engineering2-2012 1/24
C S t M I
EXA M 2 0 11
- -
SI. No.
F-DTN-M-DJWB
CIVIL ENGINEERING
Paper II
Time Allowed : Three Hours
Maximum Marks : 300
INSTRUCTIONS
Each question is printed both in Hindi and in English.
Answers must be written in the medium specified in the
Admission Certificate issued to you, which must be stated
clearly on the cover of the answer-book in the space
provided for the purpose. No marks will be given for the
answers written in a medium other than that specified in
the Admission Certificate.
Candidates should attempt Question Nos. 1 and 5 which
are compulsory, and any three of the remaining questions
selecting at least one question from each Section.
The number of marks carried by each part of a question is
indicated against each.
Notations/terms used have their usual meanings, unless
otherwise indicated.
If any data is considered insufficient, assume suitable
value and indicate the same clearly.
Provide diagrams in the answer-book wherever necessary.
A graph sheet is attached to this question paper, which
may be detached and used, if required. The graph sheet is
to be securely fastened to the answer-book.
Important : Whenever a Question is being attempted, all
its parts/sub-parts must be attempted contiguously. This
means that before moving on to the next Question to be
attempted, candidates must finish attempting all parts/
sub-parts of the previous Question attempted. This is to
be strictly followed.
Pages left blank in the answer-book are to be clearly
struck out in ink. Any answers that follow pages left blank
may not be given credit.
S Z 1 7 7 1-
011 EF T frc7
e f <
7
-cri Prei
C R
- Eg VI
tl
8/18/2019 Ias - Civil-Engineering_2 - 2012
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Section 'A'
1. (a)
i) Which building block/s you will like to
use for a sound and thermal proofing of a
studio and why ?
(ii)
Natural/Mechanical/ A.C. — Which cir-
culation and cooling system is best suited
for our country and why ?
(iii)
Which sampling procedure/principle you
would recommend for quality control of
R.C.C. work of a mass housing project
and why ? Serial/Grid/random ?
(iv)
Resource allocation and levelling will
completely upset and change the
optimum time schedule as obtained by
crashing of network based on costs only.
Comment.
(b) (i) Which cement will you recommend for
— mass concrete
—
low permeability concrete
—
high strength concrete ?
(ii) Which type of cement concrete you
will recommend for 'blast resistance
purpose' and why ?
F-DTN-M-DJWB
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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1.
e
w 4 9
-
w/491 chl Burr taft utrr . thu i
1 ; 1
w
-
t4 *
. t ‘L I =1 w i liT 4 )*.11
aril arl
-
t 9441 ?
7ilk
-
r-trd*/*fi*/
iiihn th tiatul
l
itra
t ial 1 1 9 -
T U T Z S T t 34 T q 4 1 ?
(iii)
Icf) 17 9-
f9Trfur
arrc
4 1
T f t
tIdI fffir-
T7
r r c r (114,1
RRT/RT
-a
*r 9
- zOr 04, 4*
Trr/.
)7
F a T a r zrr-
*, f t 441 ?
(iv)
W 9 T I
chiel 3
TWqa q)
kdff
chi ld
tuff gi*i
9 T H
f**r InT
114
41T u ff fdgri P1T t1 4 -1(1c1
,
a - T T
4 1 I 1 1 7 kcc roif 'tf-A 7 I
(q) (i) crgd
k fF7
au
f;hti f4 4
-
E
3Tifrr
— tOz
— w+H-gdi
lieu *Az
—
t111-1 *RIZ
(ii) 'Res a gf-e
th
chid' * f
fmtl
7*R k Th**r 741
r
-
2 4
-r441 ? 2
F-DTN-M-DJWB
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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(iii)
Illustrate briefly one estimation method
for one bedroom house.
(iv)
Which compaction and consolidation
equipment you recommend for quick
construction of a high rise building and
why ?
(c)
i) Briefly discuss factors contributing to the
ownership cost of a heavy construction
equipment.
(ii) Briefly elaborate the factors contributing
to the rental value of a heavy construc-
tion equipment.
(iii)
Explain the functions of 'spurs' in river
regulation. Also state the parameters on
which design of spur depends.
(d) During a particular stage of growth of a crop,
consumptive use of water is 3.2 mm/day.
Determine the interval between irrigations and
depth of water to be applied when the amount
of water available in the soil is (i) 35%
(ii) 75% and (iii) 0% of the maximum depth
of available water in the root zone which is
100 mm. Assume irrigation efficiency to be
60%.
2
F-DTN-M-DJWB
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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(iii)
t @TZT9 WU (Ai •tcfri t 197 afitt
arr*79
%T0
cr 4 w JR
4
-
(iv)
han 3/4
fv
Wm
3 / 4
kg
7-
E r
7
ft
a rq
-
s iwr
IT
'?
(i)
7T
4re
RTifur
Ei7
3 / 4
m
3 / 4
1 Ti
17«q141
3 / 4-
t
- 3 / 4 ):
41
e m s
4 «-1R;44 1
flf
-
7I
(ii)
7 3 / 4
me
f9
1
47
Ei7
- 3 / 4
R-c r E r r
4 C q , 1
3 / 4
kg
.f ticqiLi 3/473 /4)
:
3 / 4 )- 4 4 Er
I
0
10
9 -R.0
k s ta.
: R
4 - 1 . °
T
t 4 1
I
t ?
/ 4- 3 1
-
fl
g 3 / 4 7
-79
lei 4 Trffth
vz srm-
r17
ad
( ti ) 73/4 3 /4 97
-
3 / 4 wear(
r(
CILI 3.2 mm 7191
47 t I AO
frit
JI1
ft
3 / 4 r ,
7-7
/ 4
- to
47)
100 mm t,
,
flciou
ft Hill 3/47 (i) 35% (ii) 75% 771 (iii) 0% O' ffa
frrarz
Eff w r
*duff Fut Tc
4t
.1&1{ 1icl
*11-
4g l
RN
4 1 1 t f 3 / 4
Taf q4 Tr 60% t I
12
F-DTN-M-DJWB
Contd.)
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(c) Explain the impact of flood wave on river
water levels and flood travel time and explain
the terms 'prism storage', 'wedge storage' and
`Negative wedge storage' with a suitable
sketch. Also write an equation for flood
routing where storage is expressed as a
function of inflow and outflow in the river
leach.
2
2.
(a) A small
CPM network has the following
data. Establish
the optimum schedule for
(i) minimum cost, and (ii) minimum duration
if the indirect cost is
it
3000 per day and all
normal total direct cost is t 2,00,000 only.
Atli'
vity
Following
Preced-
ing
Duration, days
Time cost
curve
slope in
T day
Normal
Minimum
A
D& E
—
8
6
2000
B
F
—
12
8
1 50 0
C
—
—
20
19
2 5 0 0
D
—
A
1 0
9
3000
E
F
A
5
3
1000
F
—
B & E
10
9
2200
20
F-DTN-M-DJ WB
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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417 mei citil r aitift
- 5
c1: M IT
M '
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l
t
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trro
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-
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I 4 n
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Tsar Ru in
a g E
sin
T I M M
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T
isrfaraw
*
A
D & E
—
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6
2000
B F
1 2
8
1500
C
—
20 19
2500
—
A
1 0 9
3000
E
F
A
5
3
1000
F —
B & F
10
9
2200
20
F-D1N-M-DAVB
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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A
10 Ws
th ,
f ) 1
)
---
o
(b) (0 A part of the network is drawn as
follows :
Tabulate the dependencies as shown.
If actually Z depends on B & Y and
R depends on Y & Q only is there any
error ? If yes name this error, and redraw
the corrected network.
+2+6=10
(ii) State and explain factors which influence
the silting of reservoirs. How this affects
the useful life of reservoir ? Also explain
the terms 'live storage', 'dead storage'
and 'effective storage' in this context.
10
F-DTN-M-DJWB
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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(i) 4Z-
4
1 7 4 7
: ) 7 : 1
-
19
- 1
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A
l0
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441
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e ftcr, qrq ci te ctR ici,
i4Z
tR
-
11
B
3 i
-
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Y TT T4TR Trlc
e
311(Q
E R
7E4
id ii14
4)
V . 1 1 1 1
9 7 4
z4 4A
Feirl 47-
44 7: W97
2+2+6=10
(ii) 39'
chk chl cb) adi Q 4
,-r
-4147
wow
0 4 fliq-era
4 , 1
9wr-
4-
6
ct,<
z t
mcdwzr
- T 9-
titi
chit
SIST4-TAU T
-k-
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(1
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-
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9 1 7 f r
9
1-Tr* Kr)\
-
fta
4)'ite
J
474 tFru
ttf-
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0
F-DTN-M-DJWB
Contd.)
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(c) Annual flood data of a river for 30 years
yielded mean annual discharge of 30000 m
3/s
and a standard deviation of 15000 m
3
lscc. For
a proposed bridge on this river, it is decided to
h ave an acceptab le r i sk of 10% an d se rv ice l ife
of 50 years.
1.
Estimate the flood discharge for design of
bridge.
2. If the actual flood value adopted in the
design is 1,18,000 m3
/sec, what is the
safety margin for maximum flood
discharge ?
(Given that Reduced mean and Standard
deviation for Gumbel distribution for 30 years
are 0.5380 and 1119 respectively.)
0
3.
(a) (i) Compare and contrast the
—
self compacting concrete and
—
harsh c onc re te .
Where each is used ? Comment on the
workability.
0
(ii) List different type of stone masonry.
Explain the purpose of through stones in
random nibble masonry. What is the
stiching of distressed big stone blocks ?
Disc uss .
0
F-DTN-M-DJWB
0
Contd.)
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30 Tin arrUtiied ZTR
7Te
:inr6FT
314 9. 6
1114 Pithtui 30000 m
3
/s yet
P U N T
ITRT
.
R 9 7 9 1 5 0 00 m
3
/sec f I w
1
1
T
rt
IT
9 V . T T P d a
.
iffq zff
far Rtrr T i m
R
a r
-rrf9wq
-
IR4 7 r
10% W
4
T 5 0 TEI lT ;Aaict iim
1. 4
-
q q 3rflimcz @
friA 7
2.
<l ied len c1Ir
Icr9 -
t
1,18,000 m
3 /sec f;v4i 711
fa
3
6 4 5 7 1
1
'
61 1 4 ftirk
trr *M7 krcur F rk-F4 9.
qzrr t ?
(Ret-a.
Trrg r ca r-
r
a
-
s9 T
iert
30 RN
N 7 s t o
-
RT : 0.5380
3
1t< 1.119 t I)
20
3. (T) (i) rff( MIT iti
4 i qffia
—
om: titm)
zu
p i
Rrz
9 4 11.r eh (' fi izrr
*114.
1
q,I4'11eTf1I tR •
Fullih
- :
-N7 I 0
(ii) fifimnrr crsg
ft
-qv{ krt
r- A 7
trr&W
3
14
1
7 WRIT 1;111i4 ii i4
IT S T 4 a
,
T r 1 4,14 P ? slem-a
a
4c6
11
6i$1{ 4 4 T
C 11 t ? 0 1 1 611. ‘lf'47 I 0
F-DTN-M-DJWB
1
C on t d . )
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(b)
(i) The following data is given for two
power shovels. Identify the proper
choice. 0
Interest rate 10%.
A
lacs lacs
Initial cost
.5
.0
Annual costs .5 .3
Salvage
25
5
Useful life years years
Annual
quality gain
il
2
(ii) Explain and differentiate between unit
hydrograph (UH) and Instantaneous unit
hydrograph. Also explain the computa-
tional steps for deriving 2h UH from a
6h UH.
0
(c)
What are the conditions based on which the
effective length of the spillway is decided ?
What are the various methods adopted in
energy dissipation below a spillway ? Explain
the most suitable energy dissipation arrange-
ments that you would recommend for each of
the following conditions.
(i) When Jump Height Curve (JHC) is
always above Tail Water Curve (TWC).
(ii)
When JHC and TWC nearly coincide,
and
(iii)
When JHC is always below TWC. 20
F-DTN-M-DJWB
2
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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(u)
(0 e arch
1 1 M C I
i 147 11
-4
afr4
f=7 t \Ficruiff 43Tfw
10
«ar~~
10%t
I
A
Mllq
wsi
alit
-NTT
.5
0
izt, ?rid
.5
.3
r I t T I N Y I
5
9P-1
-9-
d 39
IN•
aw
l
arfif
li triffrff54
:1
2
(ii) PTV TWA7 44
3Tk4 14
1-4i M
. )
. 4
(i)
u,ch ich 1
-
4 5 1
4
1 1
,
) (UH) e rr
(ii) TWNTT
crT 2h UH
4 6h UH
h) jcc9q
d A 4 k
N7
riflu id Fold, P t
o h )
'07 I 0
(Tr) 4 TfttrfC
eTfurn
' fm4k 3Trurc
Avil
id) t ?
ow
fiRTw faruth:
? 414 4)
fa
k
earl 377 c1
11 d-oir
-R4
-
4M4 Brom
a,a ?
(i)
7 4 .1-001,1 t l r15 t i
4*) qr1
- 1 -
.0
7f
t
h)
, L
i& t
(ii)
w 4 74*m-4
fT4 wrwr Ow*
(iii)
7-4 4 7
-q• tft ur
14 *1
20
F-DTN-M-DJWB
3
Contd.)
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4. (a)
(i) Sketch
a drag line and explain function
of each part.
0
(ii) List the different ingredients of a brick
making clay and function of each part.
10
(b)
hich tests on timber are carried out,
both along the grains and across the
grains.
List the normal defects in timber with
sketches.
0
(ii) Explain briefly the functions, location
(with/without sketch) and design
considerations of the following :
(i)
Undersluices
(ii) Fall
0
(c) (i) What are the various causes of seepage
and percolation losses from a canal ? 5
(ii) Explain the term Hydraulically Efficient
Channel Section . Prove that the most
efficient trapezoidal section is one half of
a regular Hexagon.
5
Section IV
S.
(a) Describe the Boussinesq approach of stress
distribution for one layer theory and
Burminster approach of stress distribution for
two layer theory in a flexible pavement. 12
(b) List human factors governing road user
behaviour. Discuss briefly.
+7=12
F-DTN-M-DJWB
4
Contd.)
8/18/2019 Ias - Civil-Engineering_2 - 2012
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4.
() (i) Cr
.
*itrrC,
n
ITPT % )* FIE 4071
0
(ii)
tc
, F 4 T O 4 1 M 1 1 4 i
rEnV
T K
-
t 9 1 1 T W S W . i e c t . T T
10
(ca) (i) 9m
-
rtz*k
s f i :
4 far 4 9
qr
rmor
frur 04 'crew 47, AI; ?
R5r alellcbc V3/4
E f 3 / 4 k i l3 4 1 r 4 4
4 1 4 1 -
1
DT I
(ii) Ott 4 PfrikiNci
R 6 r
M9
R. )
c h R i r u z i
-rsrata76 cr
-4
3thw
a r m r
-
i f f i T e
.
c n 1 C 4
g :
S -73/4
00 W M
0
(TO (i) cw
fuy cute atmtii
4 € t
q i c i
4 7F4
7
411?
‘
,,
R4 144 vii 1Tfl tift
- - -
4
e 4 RE'
frrA7 I AZ er77 rairuch 44T
<q) trir4 4
Nor Witt tirra
3 1 7 E r T t I
5
5.
(W) cIT 974 Tip
.
if, 7*
- -
4if4n
ANfritch crw
t rmfilzia
siwuRurr W1 cater uf-d
- -4R
4-d7
r w s a m
-k-
a r r1 a t f f isq l *A V 12
(•) 110 av 4 l
a
z 4 4 1 <
a4.ca wr4
z1111414i tfr7I t14,1 acr
arrfErrer
-A -
qI
+7=12
F-DTN-M-DJWB
5
Contd.)
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(c) A fixed time 2-phase signal is to be provided
at an intersection having a North
,
South and an
East-West road where only straight ahead
traffic is permitted. The design hour flows
from various arms and the saturation flows for
these arms are given in the following Table :
North South
East
West
Design hour flow (q)
in PCU's/hour
800 400 750 1000
Saturation flow (s)
in PCU's/hour
2400
2000 3000
3000
Calculate the optimum cycle time and green
times for the minimum overall delay. The
inter-green time should he minimum necessary
for efficient operation. The time lost per phase
due to starting delay can be assumed to be
2 seconds. The value of amber period is
2 seconds. Sketch the timing diagram for each
p ha s e .
2
(d)
(i) Discuss any two methods for predicting
population with their relative advantages
and disadvantages.
(ii) What are waterborne diseases ? Also
discuss their control measures.
(e)
(i) Explain breakpoint chlorination and
super chlorination.
F-DTN-M-DJWB
6
Contd.)
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(Tr) R ift at
-M rq q, .10 crT
,ITic-eutrr Tarr 14.-
E r W T T r
-
c“9 4T Td
n i)-
rsr
qic1144(-1 SITM t) , t cL
T
wig
t ~ a l T
4k-d7
3i1WIT9' Eitref
MIW Ira 4
MIT
7
A
-raff
Up-0-1 arra
-p-FFaf-
gwru Rqi TT( t :
1
at
e z i n
Tat
trikgr
affa
9 4
-
ff Eiat (q)
3 1 1 1 7 ( 4 1-
PC U's /h r
800
400
750
1000
T i I T R 3 T 1
-
1 7 1 1
,
(s)
PCU's /hr
2400
2000
3000
3000
r W
7 1 -
cIH 1st) (14-14 RTr
tpiq aT 3(r*
-
99
ar-
A7I atff:71
T r i T E r
aff4aI
Mei f
i ) r t i W11 7 7 I afroTff te
.
4}Rui1
c ) c h m i
Wig 1
1 a 2 43 4T9T IT
tick
-1W
1
-
19
-
419
2 4i31
1
otfici-arftfir
Fqx67
2
(Er) (i) ‘
,
1(Wl
u*
ir
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ta
0 2
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6
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0
14111v4 I cbli
%-
1
7 %*
ii(lt
,
A ar
-4q I
6
(3
) (I) R---
1
1 4 s gd ia ciA u t a w r a ff
d- 9
-1ewk
u r
ti
-(F-47
F-DTN-M-DJWB
7
Contd.)
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(ii) Determine amount of bleaching powder
required annually in a water treatment
plant treating 10 million litre per day of
water if 0.2 ppm of chlorine dose is
required. Available bleaching powder
con ta ins 30 per cen t of ava i lab le ch lor in e .
10
6.
(a) (i) Define probability density function (pdf)
and cumulative density function (cdf).
Draw pdf and cdf for a Normal Distribu-
tion.
+5=10
(ii) Define Running speed, Time Mean
speed and Space Mean speed. Explain
method of measuring spot speed using
Enoscope.
+6=10
(b)
(i) Explain different types of road signs with
e x ample s an d ske tc he s .
2
(ii) Explain
equent ia l
ransportation
plann ing pr ocess .
(c)
(i) Design the spacing and size of the dowel
bars at an expansion joint of concrete
pavement of thickness 20 ern. Given the
radius of relative stiffness of 90 cm,
design wheel load 4000 kg, load capacity
of dowel system is 40 per cent of design
wheel load. Joint width is 3.0 cm and the
permissible stress in shear, bending and
t he be ar in g s t res s i n d ow e l bars a re 1 0 0 0,
1500 and 100 kg/cm
2
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(ii) Design the length and spacing of tie bars
given the pavement thickness is 20 cm
and the width of the road is 7.0 m with
one longitudinal joint. The unit weight of
concrete is 2400 kg/m
3
, the coefficient
of friction is 1.5, allowable working
tensile stress in steel is 1750 kgm/cm
2
,
and the bond stress of deformed bars is
24.6 kg/cm
2 .
0
7. (a) (i) Explain egg shaped sewer section with
their relative advantages with circular
section.
(ii) Design a sewer for a newly developed
town having population of 50,000. The
sewer is to be designed for 3 times of dry
weather flow when running full. Also
find veloCity of flow. Available slope for
the sewer to be laid is 1 in 700. Assume
Manning's coefficient
n =
0.01.
5
BOD .
(b) (i) Explain significance of — rano. How
C O D
it helps in deciding type of treatment to
be given to waste water.
(ii) A combined sewer system is serving
20,000 persons having BOD, 70 gm per
capita and 50,000 litres industrial
effluent per day having BOD 450 mg//.
If average standard BOD of domestic
sewage is 0.08 kg/day/person, find the
population equivalent of sewage.
5
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(c) (i) Explain working of skimming tanks for
removing oil and grease.
(ii) What are stabilisation ponds ? Design an
oxidation pond for treating sewage from
a town having population of 15,000.
Sewage contribution per capita per day
is 120 / and BODs 200 mg//. The town is
located in hot climate. 5
8. (a) i) Write short notes on cant deficiency and
negative superelevation in Railway track.
8
(ii) The rulling gradient has been fixed as 1
in 250 on a section of a B.G. track. What
should be compensated gradient when
500 m radius horizontal curve is also to
be introduced on a rulling gradient ? 8
(iii)
Explain road camber and its necessity.
Which road surface would need sleeper
cross slope — concrete or bituminous ?
4
(b)
(i) Explain the terms garbage and rubbish.
How these are different than ashes ? 5
(ii) Discuss composting for disposal of solid
wastes. Also explain methods adopted
for composting in rural areas in India.
15
(c)
(i) Discuss the status of monitoring and
control of air pollution in India.
0
(ii) What are the sources of particulate
matter in the environment ? Discuss the
control of particulate matters in
Industries.
0
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Note : English version of the Instructions is printed on
the front cover of this question paper