8th Semester Civil Engineering Question Papers June/july 2018

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USN r0cv81
Eighth Semester B.E. f)egree
Advanced Goncrete
Time: 3 hrs.
Note: l. Answer fin)/ FIVE full questions, selecting
atleast TYI'O questions from eoch part.
2. Missing daya may be suitsbly assumed.
3. (Is'e af IS:10262-2009 and 15456-2000 are permitted.
PART _ A
a. Enumerate the importance of Bogue's compounds in ordinary portland cement. (07 Marks)
b. Explain the rheotogy of concrete in terms of Bingham's parameter. (07 Marks)
c. Determine capitlary porosity, total porosity and gel space ratio fbr a cement paste with [7C
ratio 0,5 :and degree of hydrog en 90o/o
a -r --- -
(06 Marks)
2 a. Fxplain the mechanism of 'detlocculation' of cement particles by super
neat" sketches.
Explain the Marsh cone test for optimum dosage of superplasticizer.
Explain the effect of Flyash on hardened concrete.
3 a. Explain the factors affecting the mix design of concrete.
b. Design a concrete mix of M2s grade fbr the following data [M2o grade].
Maximum size of aggregate : 20 mm
Workability: 100 mm [Slurry]
Degree of quality control: good
Type of exposure: mild
Specific gravity of cement : 3.15.
Specific gravity of coarse aggregat e -- 2.65
Specific gravity of fine aggregat e : 2.60
Water absorption of fine aggregat e -- l.0o/o
Free surface moisture coarse aggregate : Nil
Free surface moisture fine aggregat e :2.A9/a
coarse aggregate percentage of different fie,ctions 60% : 40yo
Fine aggregate belongs to Zone II.
5 a. What is R.lvtC? Explain briefly advantages of RMC.
b. Explain slrot crete and under water concreting.
c. what are the advantages of self conipacting- concrete? what
deterrnining the rheology of self compactingfconcrete?
4 a. Explain the influence of W/C ratic and age on permeability'of concrete. (07 Marks)
b. Discuss in brief alkali aggregate reaction. What precautions are necessary to minimize?
(07 VIarks)
c. What is sulphate attack? Erplain briefly the methods of controlling sulphate attack.
(06 Marks)
plasticizers r.vith
(10 NIarks;
(05 Mar ks)
(05 lVXarks)
(06 Marks)
(14 Marks)
(06 Marks)
(06 Marks)
are different test methods for
(08 Marks)
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b. What is 'High performarctl cotlcrete [HPC]'? What are the applications of high performance
a. What are the diflbrent types of f-rbres used in r'cncrete?
b. What are the factors effecting properties of l'ib-re reinforced concrete.
c. What is ferro-cement? List the various applir:ations of Ferro cement.
a. Write short notes on :
(i) Light rveight concrete
(ii) Higlr density concrete
concrete? .
c. Discuss in brief the proLlerties of High perfbrmance concrete in
Explain the fi,llo,'ving :
a. Tests on harelehed concrete
b. Rebound Flammer Test (NDT)
c. Pulse Veiocity Test (NDT)
10cv81
(06 Marks)
(08 Marks)
(06 Marks)
(06 Marks)
(06 Marks)
fresh and hardened state.
(08 Marks)
(08 Marks)
(06 Marks)
(06 Marks)
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2 of 2

USN 10cv82
(15 Marks)
Eighth Semester B.E. Degree Examind$lorn, June/July 2018
Design and Drawing sf Stel${_ctures
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a
Time: 4 hrs. Max. Marks:100
Note: 7. Answer any ONE full question from each part.
2. Use of 15-800-2007 and Steel table are permitted.
PART _ A
a. A secondary beam ISMB 300@44.2 kg/m is to be connected to the main beam
ISMB 400@61.6 kg/rn, two angles ISA 100 x 100 x 6 mm are used to connect the webs of
beams. Three bolts of 20 mm diameter are usedto connect angles to web of secondarybeam.
Six bolts of 20 mm diameter are used to connect to angles to the web of main beam. The top
flanges of both beams are at the same level.
Draw to a suitable scale
(i) Sectional elevation
(ii) Side view showing all details. (15 Marks)
b. An un-stiffened seated connection for beam ISLB 500@75 kg/m to the flange of a column
ISHB 400@82.2 kglm is done using 2 rows of 2-16mm diameter bolts with an angle ISA
110x110x10 mm. Top cleat angle is ISA 100x100x8 mm with 2-16 mm diameter bolts on
each leg. Draw to suitable scale
(i) Front view
(ii) Side view.
a. An upper storey column ISHB 300@ 577 N/m is to be spliced with a lower storey column
ISHB 400@ 758.5 N/m. The two columns are coaxial. Provide 50 mm thick bearing plate
and 6 mm thick flange splice plate. Use 10 bolts of 20 mnr diameter on each side of the joint
in two lines of 5 bolts each for connecting flanges of the columns to flange splice plate.
Draw to a suitable case
(i) Sectional elevation
(ii) Side view with details. (15 Marks)
b. Draw to a suitable scale sectional platt, front elevation and side view of a column with slab
base using following data :
Column + ISHB 350 @710.2 Nim
Base plate -+ 650mm x 500rnm x 35mm
Cleat angle + ISA 130 x 130 x 8 mmof length 500 mm
Concrete pedestal + 1 .20m x 1.00m x 0.70m
Anchor bolts -+ 4 - 16 mm diameter
4 - 20 mm diarneter bolts on each side of flange to connect cleat angles to the column and
same number of counter sunk bolts to connect angles to the base plate.
Web cleat angle -+ ISA 75 x75 x 8 mmwith4mmweld all around. (l5Marks)
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10cv82
Design a simply supported gantry girder to support an electrically operated crane, for the
following data:
i) Span of crane girder :25 m
ii) Span of gantry girder : 8 m
iii) Capacity of crane : 200 kN
iv) Self weight of crane : 150 kN [Excluding crab]
v) Weight of crab : 75 kN
vi) Wheel base distance : 3.5 m
vii) Minimum hook aPProach - 1.00 m
viii) Self weight of-rail : 0.30 kN/m
ix) Height of rail: 75 mm
Draw to suitable scale
a. The cis of gantry girder and its attachment to supporting column of the bracket
b. Plan details
c. Side elevation (30 Marks)
The centre line of aroof truss is as shown in the Fig.Qa. The magnitude and nature of tbrces
under service conditions are
Top chord members + 120 kN compression
Bottom tie members -> 100 kN Tension
Interior members + 60 kN Tension and 50 kN compression.
For all the interior members use similar single angle section. Design the members using
16 mm diameter of grade 4.6. Also design a bearing plate and anchor bolts, four in numbers
for pull of 60 kN to connect the truss to an RCC column 300 x 300mm of M20 grade
concrete. (40 Marks)
Draw to a suitable scale:
(i) Elevation of truss greater than half space (ii) Elevation of joint 'C' (iii) Elevation of
support 'A'. (30 Marks)
(40 Marks)
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USN l0cv833
Fig. Q2 (c)
each for pavement
27 cm and distance
(10 Marks)
loads equivalent to
(10 Marks)
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Eighth Semester B.E. Degree Examrnation, June/July 2018
Pavement.Sesign
Time: 3 hrs. Max. Marks:100
Note: Answer FIVE,t'u,ll questions, selecting
at least TW'CI questions from each part.
r PART-A
I a. What are the different layers cf-flexible pavements? Explain the functions of each. (oa Marks)
b. Bring out the points of dillbrence between highway and airfield pavements. (06 Marks)
c. List the various factorsto b-e considered for the selection of type of pavement. Also list the
factors atfect ing pavenierrt perfbrmance. (06 Marks)
a. Explain Frost action. What are the measures adopted to reduce it's effbcts. (06 Marks)
b. State the assrunptions and limitations of Elastic Single layer theory and Burmister's two
layer theoi'-l'. (06 Marks)
c. The plate- tiearing tests were conducted with 30 cm plate diameter on soil subgrade and over
45 cnrl.base course. The pressure yielded at 0.5 cm deflection are L25 kglcm: and 8 kg/cm2
respectively. Design the pavement section for 5100 kg wheel load with tyre pressure tif
',, 7 kglcm2 for an allowable deflection of 0.5 cm using Burmister's approach. (Refer chart
given for Burmister's two layer deflection factors in Fig. Q2 (c)) (08 lltar:ks)
0.06
o.05
0.04
0.03
o.02
rs .2:* 3 { _ 5
RAIIO.THICKNE$S Of, NT.-iIiTORCING LAYER IO RADIUS Or COIITRCT, 3
Burrnister's two-layer deflection factors
Calculate the ESWL 9f la dual wheel assembly carrying 2044 kg
thickness of 15 cm, 20 cm and 25 cm. Centre to centre tyre spacing is
between the walls or"ltie tyre is I I crns (Use Graphical Method).
Calculate the ciesign repetitions for 20 year period for various wheel
22.68 kN rrrheel,'ioad usins the following dat
lT".d ,, Kt
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usmg rne rollowlng oata on a lour lane ro
KX 22.68 27.22 3t.75 40.82 45.36 49.90 54.43
e ner da 30 25 20 l5 t0 5 I
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10cv833
4 a. Design the pavement section by triaxial-Kansas methr:,d using the following data:
Wheel load - 4l KN
E value of subgrade soil : l0 N/mm2
E value of weaiing course : 100 N/mm2 , ,
Radius of contact area: 150 mm
Design deflection : 2.5 mm
Sketch the pavement section. :: (10 Marks)
b. Briefly explain the procedure:clf CSA method for the flexible pavement, design as per
IRC-37-2001 . (lo Marks)
PART _ B
a. Define modulus of su-grade reaction uid *ai* of relative stiffness. (06 Marks)
b. Write the commonly used equations for the theoretical computation of wheel load stress by
Westergaard?,s arraiysis of Interior; Edge and corner loadings. (06 Marks)
c. Calculate the s{resses at interior, Edge and corner regions of a cement concrete pavement
using Westergaard's stress equation. Use the following data:
Wheel lioa.C:5100 kg; E,: 3x105 kglcm2; p:0.15; Pavement thickness: l8 cm
I4odulus of subgrade reaction : 6 kglcm3; Radius of contact area : l5 cm (08 Marks)
6 a. List the various requirements of joints in cement concrete slabs. Explain in defs.il with
, sketches: (i) Expansion joints. (ii) Contraction joints (10 Nlarks)
b. A CC pavement has thickness of lScm and has two lanes of 7.2 mts with a
along the centre. Design the dimensions and spacings of the tie bar. The
allowable working stress in tension - 1400 kg/m2
Unit weight of concrete -2400 kg/m3
Allowable bond stress in deformed bars in concrete - 24.6 kglm2. ,
'
a. Explain various types of rigid pavement failures with neat sketches.
b. Explain briefly the pavement evaluation.
(10 Marks)
a. Benkelman beam deflection studies were carried out on 15'selected points on a stretch of
flexible pavement during summer season using a dual wheel load of 4085 kg at 5 kglcm2
pressure. The deflection values obtained in mm after. maliing the necessary lag corrections
are given below. If the present traffic consists utr 750 commercial vehicles per day,
determine the thickness of bituminous over lay: required. If the pavement temperature
during the test was 39'C and the correcticrn.: ftctor for subsequent increase in subgrade
moisture content is 1.3. Assume annual rate of groMh of traffic as 7.5%. Adopt IRC
guideline. 1.40. 1.32, 1.25, 1.35, 1.48- 1.60, 1.65, 1.55, 1.45, 1.40, 1.36" 1.46, 1.50, 1.52,
1.45 mm (14 Marks)
b. What are the causes of formation trl'waves and corrugations in flexible pavements? Suggest
remedial measures (06 Marks)
longitudirral joint
other data are -
(10 Marks)
(10 Marks)
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2 of 2

USN 10cv835
Max. Marks: 100
(06 Marks)
(08 NIarks)
(06 IlIarks)
(10 Ntarks)
m3/day of
(10 NIarks)
.t "'- .')"./
Degree Examinatiorr , f,u+t6tluly 2018Eighth Semester B.E.
lndustrial
Time: 3 hrs.
Wastewater Treatment
b. Explain with a neat sketch, suspended growth biological prcrcess.
a.
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Note: Answer any FIVE full questions, selecting atleast TWO questions from each part.
PART _ A
a. Differentiate between Domestic and lndustrial waste water.
b. Discuss the factors to be c<lnsidered in stream sampling.
c. Explain the terms Eftluent standards, Stream standards and Stream classification.
,
a. Explain in dt:taii itreeter - Phelps formulation of mathematical analysis.
b. Obtain tire DO, Deticit profile tbr l00km given the city discharge is 20000
sewage ancl river discharge is 0.7m3lsec.
llata gi'"en :
Parameter River Sewage effluent from STP
DO 8.2 mglL 2.0 melL
Temperature 23"C 26"C
BOD 5d. 40"C 3.4 mglL 45mslL
a. Explain the necessicity and process of volume reduction as a strategy in inriustrial waste
water treatment. ( t0 Ntarks)
b. Discuss the terms Neutralization, Equalization, Proportioning and Bi' -- product recovery'.
(10 NIarks)
a. Explain the unit operations adopted for removal of suspended solids and inorganic solids.
(10 Marks)
(10 Marks)
PART; B
Combined treatment in common effluent treatment facility is very effective for industrial
estates. Discuss the reasons and consequences. ( l0 Nlarks)
Explain the effects of discharging treate,C and partially treated rvaste water into rivers.
(10 tllarks)
a. Draw a neat flow diagram to sho..v
and explain.
the points of generation of wastes in a cotton textile mill
b. How does Tannery waste affect the water bodies? Explain
waste water rvith a flo,"v diagram.
(10 Marks)
the production and treatment of
(10 NIarks)
a treatment strategy fbr
(10 Marks)
for frsh export industry?
(05 Marks)
a.
b.
Discuss the effects: of dairy rvaste
prevention of etlt'cts on a river.
How is ecoiogj' of estuaries aflbcted
Explain.
on streams and propose
by establishing cannery
1 ofT

c.
10cv835
Give the sources of effluents from a cement manufac:iuring process. (05 Marks)
Drarv a neat florv diagram for the manufacture o'f paper and pulp and give a treatment
strategy for the combined waste. (10 Marks)
Cive the strateg,v of treating using bacteria for antibiotic waste from a pharmaceutical
industry. (05 Marks)
E,ffective maintenance of food to micro - organism ratio is essential for treating industrial
wastes. Explain (05 Marks)
8a.
b.
c.
&&& &&
2 of 2

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USN
1OCY847
20 18
(12 Marks)
(08 llarks)
help of flow chart.
(10 Marks)
(10 Ntarks)
(10 Marks)
rmpact on socro -
(10 Marks)
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PART - A
Define EIA and rvith the h,.:lp of flow chart. explain relationship
FONSI.
between EIA. EIS and
(10 Marks)
(05 Marks)
(05 Marks)
Explain the need of Ely'" studies.
Explain the ma.ior ccrnponents of Baseline lnformation.
With the ltelp' of neat flow chart, explain the step - by - step
Expla:in tl're various limitations of EIA.
procedure for conducting EIA,2a.
b.
1a.
b.
C.
a.
tr.
a.
b.
Dsscribe the frame work of environmental impact assessment with the
Explain in detail the check list and Network methodologies of E,lA.
Explain the basic step for Prediction and Assessment of impact on water.
Discuss the various steps involved in Assessment and prediction of
Economic Environment.
PART _ B
a. Outline the MoEF guidelines for developmental projects.
a. Define Public participation. What are the advarrtages and disadvantages
participation?
b. Explain the practical considerations in writing irnpact statements.
a. Outline the salient features of the prcjecl activity and environmental
relationship.
b. Briefly explain the Leopold matrix.
List the Environmental impacts of :
a. Water resource development prcject.
b. Mining project.
c. Highway project.
d. Infrastrucfure constnrction activities.
(10 Marks)
(10 Marks)
of public
(10 Marks)
(10 Marks)
parameters
(10 Marks)
(10 Marks)
(05 Marks)
(05 Marks)
(05 Marks)
(05 Marks)
,r*r<Jrrr

8th Semester Civil Engineering Question Papers June/july 2018

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8th Semester Civil Engineering Question Papers June/july 2018