CIVIL ENGINE'ERING
.
Time Allowed: Three Hours MaXimum Marks 300

INSTRUCTIONS

Each question is printed'both in Hindi and in 4nglish. Answers must be written in the medium specified in, the Admission Certificate issued to which musfbe siated clearly on, the cover 'ofthe 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 (he Candidates should attf}mpt Nos. J and 5 which are compulsory, lind any three ofthe remaining questions at least one question from each Section. The number ofmarks carrjed by eachguestion is in4Jcated at the end ofthe . flotations/terms used have iheir usual mean,ings, unless otherwise indicated. 1/any data is'considered'insufficient, assume suitable value and indicate the same clearly. ProVide d(agrams in. ,wherever necessary.



1. Classify the sedimentary rock on the basis
of tyPes of deposits. Give examples. 5
Explain the soundness test on cement. 5
Draw the neat sketches of the strip footing
in black cotton soil. 5
Expfain the 'Rippers'. Dra;w line diagrams.

Draw aJine diagram of a trenching machine
and explain briefly. 5
'Draw 'the plan of Double Flemish bond for
various wall thicknesses .with pier of same
thickness. 5
Draw neaf, sketches of pattern of contours that
show Vertical cliff, Ridge line, A pond,
having.:unifonn,steep slope, A Hillock.
Aiso explain with suitable how the' contour
map will help iIi canal alignment. 10
Explain the requirements of rail section. What
factors are considered in deteffilining th:e maximum
limit of vertical rail wear What is the most
common of failure of and also give its
explanation. 10
·Explainthe terms traffic del1sity, traffic flow and
mean free speed and describe their inter­
relationships using sketchesidiagrams.
10




Explain· Resource Management. 10
With line diagram ·explain the 'operation of drag line. 10 Give the classification ofArches according to number of centres. Explain, them. with only. 5 Describe in brief the advantage of hollow
concrete masonry. 5 Explain the natural errors in, the levelling. A page, of book is reproduce9 below in which some readings mar!ced of are missing. Complete the page with' checks:
Station B.S. I.S. F.S. RISE FALL R.L. Remarks

What necessitate taking
up of a.realignment project of the highway?
Discuss the general principles in the re­
alignment of a highway and 'explain how
the work is carried out. 10
The following defects were recorded upon
inspection of a railway track:
Battered ends of rail joints
cracking of rails
Excessive closing and opening ofspaces
at rail joints.
Give reasons for these defects and suggest
any remedial measures. 8
3. Determine the project completion time, the
critical path and the total float for
each activity using C.P.M.

•

Activity Duration Preceeding
(Days) Activities
A None
B 3 A
C 4 A
D 3 B
E 2 B
F 3 A,E
G 3 C



10
Define:
EST; LFT; Total Float; Float, Interfering Float. 10

What are the functions of cement ingredients?


An area 40 Ian in the north-south direction and 36 in the east-west direction, is to be photogrammetrically surveyed. For this aerial photogra.phy is to be, made with follow:ing data:


10
Average scale of photograph 1 15000
Average elevation of terrain" 45"0 m
Photograph size 20 cm x
20 em
.
End lap 60%
Side lap 30%
Ground speed of Aircraft 200 km/hr FDeal length of camera lens 30 em
Actiyity Duration
(Days) Activities
H 5 D,E
I 4 G
1. 5 F"G,
K 4
L 2 J


Calculate the flying of'the aircraft, nmnber otphotographs in each flight, number of nights, total number of photographs, spacing of flight lines, ground distance between exposures and exposure interval.
12
Explain sight distance and factors causing
" restrictions to sight distance. Explain the significance of stopping sight distances. Also derive an expression for finding the stopping sight distance at level. Making necessary assumptions, calculate the minimum sight distance required to avoid a collision of two cars approaching from opposite... directions 90, and 60 kmph. 12
Draw a neat sketch:of diamond crossing and list its important features. 6
4. Differentiate between standard equipments and special equipments. 5
Explain the economic life of an equipment. 5
The proposed terms two ,loans are as .follows:
Loan I of Rs. 2·00 lacs at p.a. with redemption in 50 years at :p.a.

Loan: II of Rs.. 2·00 lacs at p.a.
with redemption -in 60 years at
p.a.
Which of the two loans is more favourable
the borrower 10
Ex,plain .with the in Plastering.
10
Explain the objectives oftriangulation surveys
and explain the criteria for selection of the
layout of triangles. Also explain the term
well conditioned triangles, and strength of
figure. 10
List the fundamental lines of a theodolite
and briefly the desired relationships
between these lines and the effects if such
relationships are riot maintained. Also describe
the checks need to be applied on an open
traverse. 8
Discuss the importance of gross wheel load
and contact pressure in stress distribution
pattern and in pavement design. 6
Explain how the elastic moqulii of subgrade
and base course are estimated using plate
.bearing test data. 6



5. Answer the follo'Ving

What is open channel List the design characteristics of open channel. 10


Differentiate between Thennophilic and Mesophilic bacteria explaining their. roles in anaerobic digestion. 10


What is an aquifer? How are they classified Describe salient features of aquifers. 10


mL-9f the waste sample has been added into a 300 roL BOD incubation bottle. The initial D.O. of-the diluted sample was 7·8 mg/L and the final D.0; after 5 days was 1·7 mg/L. The corresponding initial and final D.O. of the seeded dilution water was and respectively. What is the 5-day BOD of tqe waste.water sample.


10

What-are spillways? Why they needed in the dams ?Briefly describe salient features of and spillways. 10


Based on type of air poll.ution and climate, differentiate between 'Gray air" and 'Brown air' with examples! 10


6. Explain the types of sedimentation with 2
14 (Contd.)
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o
What path trajectory the settling particles follow in circular and rectangular settling 2
Given the following data, below, design a circular sedimentation tank with launders and find out:

The diameter of the settling tank.


Total depth of the settling tank with free board including the depth of the hopper portion.


Total township area -20 ha %age areas for roads, public
utilities, and open spaces 15% Floor to space ratio l·5 Floor area required for
each person 10 m2 Water losses accounts for Working hours for plant 23 hrs. Surface loading rate 1·25 m3/hr/m2 Detention time 2·5 hrs Slope for floor slab 1 in 12 Incoming velocity flow 0·6
Check the design with weir loading calculations. Assume water supply rate as 135 Ipcd. Give a neat sketch of final designed circular tank showing
16

What do you understand by multipurpose
reservoir Describe in brief various
for reservoir planning.
10
.
What is reservoir sedimentation? Discuss
various methods used for control of silting
of reservoir. 10
Explain with the help of a neat sketch the
hydrological cycle indicating its various
phases. 10
Discuss different forms ofprecipitation. How
measurement of precipitation is done? 10
7. What are the factors that influence the flow
of sewage in sewers Define 'Time of
Concentration' for storm water drains and
explain its significance. 5
A vitrified clay sewer is to carry a discharge
of 1000 l.p.s. When flowing half full, it is
laid at a gradient of 0·0032. The manning
coefficient of the sewer:is same as that of a
triangular notc;:h with unit depth and having
a slope of 1 in 2. The velocity in the notch
is obtained as 0·804 mls with a gradient of
1 in 400. Determine the velocity of flow
and diameter of sewer. 15
18 D (Contd.)


Explain the terms duty and -delta. Derive a
.relationship between' the' two. 10
A soil has field capacityof 23% and wilting
coefficient of Ifthe root Zone depth is
65 cm" determine the storage capacity ofsoil.
liTigation wafer is ap}?lied when moisture
content falls to 10%. If water application
efficiency is determine the 'water depth
required to be applied in the f1eld. The dry
unit weight of soil is 1·5 gm/c,m3 . 10
What is unit hydrograph various
propositions of the unit hydrograph. 10
Explain various steps adopted derive a
unit ;hydrograph from an observed flood
hydrograph. 10
8. Differentiate:between Garbage and Rubbish.
6
What are the -advantages and disadvantages
of sanitary landfills 7
(iiD Define., Municipal solid waste. List out the
good practices that should be followed for
an efficient management of .MSW. 7
What do you by term river
training? What are the worJcs that come
under this category? 10


Draw' a sketch of a guide bank. Give its design 10 radioactive pollution? How is radio­actiye disposed 10 Discuss. the need .of Environmental Impact study. How do thermal power plant's affect the environment 10

Note: English version ofthe Instructions is printed on the front cover ofthis question paper.
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