7th Semester (Dec-2015; Jan-2016) Civil Engineering Question Paper

+h ^ ,.{
:+" Qerrt C
USN
lCIcv?65
Seventh Semester B.E. Degree Examination, Dec.2015 lJan"20l6
Air Pollution and Gontrol
Time: 3 hrs. Max. Marks:100
Note: Answer amy FIVE -{ull questions, selecting atleast TYi/0 qwestiaws fno* each part.
C)
Q
'5
(-)
$
a.
:
F
.c
d)
=6i
!
adu-; v.)
*l
.5 c
-O
6J!
o'J
40tr
sag
-o>!2S
I o,)
5v
-::qc_
.x/. .Y
<O
?, t;a
!u
c-
>.:
'Etr
U=
=d
E>UE
o-
(-J<
;
z
tcd
a
c-
E
1a.
b.
PART _ A
Defrne Air pollution. Explain primary and seconda{y ar pollutants with examples.110 Man"ks)
Explain the effects of photochemical smog on human beings and plants.
a. Explain with neat sketches, how different atmospheric conditions give rise to different kinds
of plurrles.
b. Explain the terrns :
0 Environmental Lapse Rate (ELR) i0 Adiabatic Lapse Rate (ALR)
iii) Wind Rose (WR) iv) lnversions. (tr0 Marksl
a. List the factors that should be taken into consideration while selecting a site for an industry
&om the point of rninimizing air pollution. (tS Ntrarks)
b. Explain different methods of gaseous ar pollutants sampling frorn tlie ambient atrnosphere.
(X0 Marks)
PAR.T _ B
a. Explain with neat sketches the principle and working of the following :
0 Cyclone separator ii) Electrostatic precipitators. {trO &trarks)
b. Enurnerate the various analytical methods available for monitoring air polluticn. t l0 ivlarks)
o^
Explain briefly the principal emission from gasoline d.riven anri ,Ciesel driven vehicles.
ii0 Manhs)
What are the various approaches to minimize exhaust ernissioras? Exprlain. {1$ &,!arks)
a. What is Acid rain? What are the causes
,egetation?
for acid rain? What are the effects of acirl rain on
(!0 &Iarks)
{i0 Marks)
a. tsriefly explain the effects of air pollution on :
i) Human health ii) Fiants iiD Anirnals iv) Materials.
b. Diseuss the following cases of air pollution episodes :
i) Bhopal Gas Tragedy ii) Los Angeles Smog.
b. Describe the phenomenon of "green house effect", due to carbon dioxide.
Write short notes on any four of the following :
a. Water quality standards.
b. Ozone la3rer depletion.
e . Adsorptior: by solids.
d. Stack gas sar:rpling.
e. Enviroarrnental policy.
a.
(10 lVIarks)
(trS N{aa"ks)
{10 Manks)
{10 Vtarks)
ffidt uanaRy j;;
w#
{20 Marks)

USN 10cv71
Seventh Semester B.E. Degree Examination, Dec.2015 /Jan.20l6
involved in treating domestic sewage.
1 of2
(08 Marks)

10cv71
PART - B
a. Explain briefly the dilution method of disposal of
infiuence the choice ofthe method tg be adopted?
b. Discuss in detail the process deoxygenation and
purification of natural waters with a neat sketch'
sewage. What are the factors which
(08 MarlS)
reoxygenation with resPect toffilf
(rtl(affis)
"N#
a. What do you understand by the term "Low cost waste treatmenf'? *qfy Marks)
b. Explain with a neat sketch the principle and process working of an "oxid"mft
Marks)
c. Design an oxidation pond to treat sewage in a tropical countrY, fi'"t&q -{dtony of 10,000
persons. The B.O.D of tn. sewage is 300mg4 and flow is 120 $cd ryYhl.*"er
supplied is
collected as sewage. Check the detention time. Sketch the detail$fl*Soxidation pond'
&*Y (10 Marks)
7a.
b.
c.
/&
What is sludge gas? What is its typical compositionf Wnffifo the uses of sludge gas?
m (04 Marks)
Explain briefly the different stages of sludge digestiwrocess in a "Digestot'" With a neat
stcetctr explainthe constructiorai d.tails of sludqS|igestion tank. (08 Marks)
IT'#;J"lfl *ffi L'ri,f;;'l3$^'ffi1'll'JlliT;iT:l:',JJ;Jixi,,Tl;l
3.5% of fresh sludge is being mixed
$h disested sludge. (08 Marks)
Write short notes on the foffo*irp(p
a) Sewage farming -Y/-b) Testing of a sewer ling'$
.j SUag.-Uulking andffile volume index
d-) Oxidation Aircn4fl (20 Marks)
^(ff
!r*{<**
('i
*er. trhw(#&h
-w-
-Nn.'
t-ss
2 of2

USN
Time: 3
10cv73
SECTIOT{ ON VERANDIIH
SOUARE PILLARS
Schedule
-DOORS
Dr = 1I0x20O
Di = lcoxZoo
Di = eo*zoo
wINFlOt{5:
w, ; ?4$x12n
i*i. = :eo*: ao
*; ' 110x120
gj, = to0xl20
rt,'; ?5 xl oo
5I1&LVES :
5, = lOOx1Z$
si = 75x ?3
CHA.iJ.{ ;
5 .THIGK ( AV. :i
& 46 PR()J-
Seventh Semester B.E. Degree Examinationo Dec.2015 lJan.20l6
Estimation and Valuation
hrs. Max. Marks:100
Note: l. Answer Q.No. 7 and dny FOaR of the remaining" * &,"
2. Missing data if any may be suitably assamed. . r
The details of a residential building are shown in Fig. Q1. Estimate the quanttffiAi tfre
following items of work and cost of the respective items in an abstract form. f.*";l}T*"
Earthwork excavation for the foundation @therate of ( l20ki.
1
do
5o
!
g
G,
.O
'cl
, €.6.)
G,
c)
.9
8eboP
X-.'9'-r..,.'
'.yB '
=ia
60 ,,
.E?
.= (t
cd !+
Hbo
Yc)
€g
6E
Ez
3S
b U' i' '1li:
dO
b0=cBrd
-o
!qI
Ed
-2" f'Ee
€E
d.E
a.9
6:
toalE
LO
HE
^=ho-
tr' o0
()=
su w
50.ru(.) -.';J"s: 4.h #
L' 1t#
-.i c'i
()
z
!
o
o.
tr
a.
b.
c.
d.
Size stone masoffy in CM 1 : 6 for footing and plinth at the rate of 7220p-eq'
First class brick work in CM 1 : 6 for super structwe @ (3800 /m3. u #.-'
RCC Roofing concrete 3600/#. "'3' 3 (40 Marks)
c.d?rffi
gl
a c.c- 60
_*_a_
{l;tl:8) .t a.
2Aa*
a E-
-.Li.*.!L' r FeO *1
s$crJor{ o$ *BCP
I* -w- - --r F- tsn -*.1
KTTCHEN
2rlGx3Oo
5.I
30130
Pii.:.,*,R
L,IvING ROOU
3 5Ox51 O
I*.r-..e REttM
S 36xI8
I
I
I
I
I
I
t_I
Jo-.
- W--
I--- I rrO
i
od
Fig-Q..1
a
1 of3
Ali. ,Biyl:*rlons _in cms*

a.
b.
c.
'' I'
l*d'
"
"._J
LI
2)
s'%[
, "rs t,- ts:j '::..: ;'
{t{
-$-{. &
* X"i"r r-_-lI J
il
10cv73
The details of septic tank is shown in Fig.Q2. Find detailed quantities of following items:
Earth work excavation for foundation in hard soil.
Burnt brick masonry in CM 1 : 4 for sidewalls.
RCC (1 :2:4) for cover slab with 1% steel reinforcement for septic tank and soak pit.
$EPXC nrNE rSn :S USEF.S
9cr.rrn D'E. C. f. i?sndlat.r{t pos *nm }iign
.6crn B C. 6. S;*
trsi trfn
S- !V- Frp*
(15 Marks)
I*
h.
* fur
u
I
.il1rr1 .
lL* :!sbm-
' :- fdareq S'zf,d
Br:cX 1rg611* *n
I i$Somefil $?oiieJ
18rfi8 floe}:Ea
f Eer{r $ic4
PI'.AI.I
3 a. List and explhin (any two) different types of estimates.
b. Estimate the quantity of timber required for the door shown in Fig. Q3 (b).
F ra.ne 125 x ,i5
.4gl {f,im*:rsicns irt Cilnlrfirel.lB rjil'rt1s tlr'Enarlig SFet3Ji4{
Fig. Q2
*r .,.
-"t- rop xal i
; i rj!, wlde
,
-!.,q-,,1-i irio w.ide
.-..j--
j:,t'l.er(! RaiI
oSft.l.:rlde
fi'*':"S;1
Sottcrn Rai l
I 5ij wjcje
(08 Marks)
(07 Marks)
7,$6'r *.C.C.
[rc{r FostSkp$
14S ay'
{
I Sope t irri0
2 of3
All dimensions in mm

10cv73
a.
b.
c.
Write specification for the following:
Size stone masonry in footing and plinth 1:6 CM.
Damp proof course 2.5 cm in CC 1 : 1.5 : 3.
Cement concrete I :2: 4 for'Roof slab.
From first principle workout the rate per unit of any three of the following:
CC 1 : 4 : 8 for foundationbed.
First class brickwork in CM 1 : 5 in superstructure.
Rubble stone masonry in CM 1 : 6 for foundation.
12 mm thick internal plastering in CM l:4 for brick wall.
Estimate the quantity of earthwork from chainage 20 to 26
a.
b.
c.
d.
(15 Marks)
&
&
,, .
{s.!." "
*"'t,!tsts,&
d'*q'#
--_ *'iu*]
("h- o
q'".e (15 Marks)
6 "a standard 20 m
chaur Aom the fbllowins data end area formula.
Chainase 20 21 22 23 24 V5 26
Ground level above datum 88.10 87.74 87.80 88.20
90.4CI
90.75', 90.20 89.98
The formation level at chainaee 20 is 88.50 and the a rlslmage ing gradient of 1 in 100.
(15 Marks)
!i *lf...ti
wfu
Wqtu *
;&,
K':"#
t
The formation width of the road is 10 m and side slo{ft.in cutting 1 : 1 and banking 2 : 1.
na;.r, (15 Marks)
flaq q
Write short notes onthe following: *"M*
a. Administrative sanction and technical sanctfud
b. Valuation and methods of valuation. #"* d
*"
c. Tender and leasehold properties. ";:-"tr1,,d};
-
tril,Y
** at*{<{<{<
.-- 1& "
d?,t
JK'Lf
.,ct
*Sf* ".,
^J"r.6 -
{1i
.,)
*"
,. r:4P'
4'*t3'
,s. "- ls
(,ed
{t' h
nL.
s.*
,.:4;i, l1
3 of3

USN t0cY74
Seventh Semester B.E. Degree E
Design of Prestressed
.,1t.,,.,eNote: 7. Answer any FIVE full questions, selecting
atleast TWO questions from each purt.
2. Use of IS 1343-1980 is permitted.
H PART_A
g I a. Define prestressed concrete. State advantages as over reinforced concrete. ,,, (06 Marks)
E' b. Distinguish between pre-tensioning and post-tensioning. ,.,.,
' . (08 Marks)
ts_
I c. Explain Magnel - Blaton post tensioning system with a neat sketch. "' '' (06 Marks)
EC)
E 2 a. Explain load balancing concept in a prestressed concrete members. (04 Marks)
$g b. A simply supported concrete of rectangular cross section 400 x 600 mm is loaded with a
gE total UDL of 60 kN/m over a span of 6 m. Draw the distribution of stress at mid span. If the
E A prestressing force of 1920 kN and the parabolic profile of the tendon has an eccentricity of
-qp]^ l00mmatends and200 mmatmidspan. (t6Marks)doo
.=s
E ts, 3 A prestressed concrete beam of inverted T-beamp5p*hown in Fig.Q3 and is simply supported
S E oYer a span of 16,.*. The beam is post-tensionffirith a 3-Freyssinet cables, each contay:yg l?
.2015/Jan.20l6
Structures
5'E wrres ur / rrur ula pracgo as snown a[ ["ff) r]1lo span. lI Ine mrtlal prestress ls IUUU N/tlm-,
i A calculate maximum uniformly distributed,rlggd if the maximum compressive stress in concrete is
f € hmited to 14 N/mm2 and tensile stress ls hmiteO to I N/mm'. Assume loss of prestress as 15010.
A g ' r'-"-'
(20 Marks)
EB.
= 6 T--s-g!.q-rE < _l_ r_-l3.E eoo I -1- - )--.Ecdrml l--'1 -
!; I-J I
EE & g"-?"Il*-'-"-h€t i
5 f +.|"€7* -r soc
fr: h. -ri* Fig.Q3
=cg"?O
qi 'u
=cgn"
ir. 6-
F q 4 a. List the
K&bffi losses in pre-tensioned and p-ost tensioned beams. (04 Marks)
;.E b. A po.sffiioned prestress concrete beam of 30 m span is subjected to a prestress force of
H S 250_#$"At 28 days strength. The profile of cable is parabolic with maximum eccentricity of
E E ?qmffi* at mid span. Determine the loss of prestress and has a cross section of
aE *q$00mm x 800mm deep beam is prestressed with 9 cables each consists of 12 wires of 5 mm
$'i , L.p-bia. Take E. : 2.lx10s N/mm2 and E. : 3.5x10a N/mm2. The cable is tensioned at time..H $ * LJ-hia. Take E. :2.1x10s N/mm2 and E. : 3.5x10a N/mm2. The cable is tensioned at time.
-&E -}t
(l6Marks)
s u r-a o
5 0. #s-
:"W PART-B
? - 5 a. Explain the load deflection characteristics of typical prestressed concrete beam under flexure
-j N with a diagram. (06 Marks)
g b. A rectangular concrete beam of cross-section 150 rlm x 300 mm deep is simply supportedz
E over a span of 8 m and is prestressed by means of a symmetric parabolic cable at a distance
E of 75 mm from the bottom of the be.am at mid span and 125 mm from the top of the beam at
g ypport section. If the force in the cable is 350 kN and the modulus of elastfoity of concrete
is 38 kN/mm2, calculate (i) The deflection at mid span when the beam is supplrted its own
weight and (ii) the concentrated load which must be applied at mid span to restore it to the
)
level of supports.
1,of2
(14 Marks)

t ! l':iig.?qii'
F
''1
i'i i t'r: i ii*rti.: ?:': i.,rffiff$.q#ffifl1ffih
.lffi {ffi:irt-,?jrs{6!
(06 Marks)6a.
b.
Explain the mechanism of shear failure in PSC beams.
A pre-stressed T-section has a flange width of 300 mm and the thickness of the flange is
200 mm. The rib is 150 mm wide by 350 mm deep. The effective depth of the cross section
is 500 mm. Given Ao : 200 ffiffi2,- fr : 50 N/mm2 and fo : 1600 it/**'. Determiffi
' i rit * i .i'
flexural strength of the section.
r'rl -
*
What is transmission length? List the factors influencing transmission lengthffi S foo Marks)
A pretensioned beam is prestressed using 5 mm diameter wires with ang{pjtifl stress of 80
r -,V-{,
8a.
b.
400 mm. The member is prestressed by 8 wires pf +nm diameter located on the tension side
such that the effective eccentricity is 91 mm. -$&'dinitial stress in the wires is 1280 N/mm2
and the cube strength of concrete at transfer is,'42 N/mm2.
(t) Determine the maximum verticaltensile stress developed in the transfer zone and
permissible stress in steel as
(16Maiks)
peicent of the ultimate tensile strength of steel, fp, = 1600 N/mmffiXdube strength of
concrete at transfer is 30 N/mm'. 11 Calculate the transmissio, lr$glpr- (ii) Compute the
bond stress at ll4 and ll2 the transmission length from the ped Ma (iii) Calculate the
overall average bond stress
M (14 Marks) '1
fl}*/ |
Explain end zone reinforcements. dq (04 Marks) I
A pre-tensioned beam of 8 m span has a symmetriqul I-sbction. The flanges are 200 mm
wide and 60 mm thick. The web thickness is 80 ffi and the overail"ite tff.6ffiffU€pqFux-'Tn1
7a.
b.
(ir) Design suitable mild steel rejefi*f;Pement assuming the
140 N/mm2 -/M
.* Kd
,*,4-
roK/'
..* :r *' * {<
"q-
*fj -.1,,l
.T. nI."
P !:!l
x .c' %,J
t
s*S
l,*:
+ $, 'r.'
. . :. .: ji.j:ii!:rs-n{Av1tr-r6<rtl
' '.- 'r):::-'i ii:t .i1aro.glx-r1*
tr .r,i.srdFfrhEl,tt${etlft!;
2 of2

USN t0cv72
Seventh Semester B.E. Degree Exa ec.20l5/Jan.20l6
Design of Steel Structures
Time:3 hrs. Max. Marks:100
Note: l. Answer FIW full qaestions, selecting
d at least TWO questions fro* each part.
3 2. Use of IS 800-2007 SP : 6 (1) - 1964 or steel table is permitted.I
+ 3. Assume steel of Fe - 410 und Bolts of Class 4.6 if not speciJied.
! PART-A()
E I a. Explain difference between working stress design and limit state design of steel structures.
.E
n e (08 Ntarks)
H: b. Explain the advantages and disadvantages of steel structures. (06 Marks)
t B" c. Explain briefly about classification of cross section and their characteristics with the aid ofd9
t 6 moment rotation relationship. (06 Marks)-oo ll
coo
E
q 2 a. With sketches, explain the different failures of bolted connections. (06 Marks)
E f b. Design a bolted connection for a lap joint qf plate thickness of 10mm and 12mm to cany a
otr
# g service load of 100kN. Use Mio 4.6 grade'bolt. Give the details with sketch (Assume the
I F bolts as tully threaded).
E *
). (14 )larks)
A E 3 a. Discuss the main two types of weld commonly used in structural work with sketches.
E il t06 Marks)_L
E S b. Calculate the factored load that can be supported by bracket connection shown in Fig. Q3 (b)
ff F Take size of weld as 6mm. (14 Marks).E c0
;xru€€ +lM
e
g
fl 11 ', ) Ancket bta,EE
Hq Winntlur|^
; € l;ou;n
..
I tsHbsoo@affln
; s l* zsan*1
H E l--inr**'
Hg5.:r
A=
H + { *r. Explain the rerms
EE "r.To , i) Plastic moment ii) Plastic hinge iii)
24
E ' ' q_ tr{ +_A no __f__4 n )
E g " {. }, I i) Plastic moment ii) Plastic hinge iii) Shape factor iv) Collapse mechanism. (06 Marks)
5 [.:,"r"N b. Analyze the continuous beam shown in Fig Q4 (b) Calculate maximum plastic moment.
5€"' ' Take load factor as 1.5. (4 Marks)
-.i ".i'' | 501(NJ
i I"- r)' 2oKh'{h4
E 2{p I r{e
Fig. Qa @)
I of2
(o'
Fig. Q3 (b)

t0cY72
PART _ B
a. What are lug angles? Explain design principle of lug angle. (06 Marks)
b. Designs a single angle section to carry a service tensile load of 120kN. Use Mzo 4.6 grade
bolt (Fully threaded). (14 N!a{ts)
Design a built up column consisting of two channel section placed back to back oarrying an
axial factored load of 1400kN. Effective length of column is 5m and also designs lacing,
sketch the details. (20 Marks)
7 a. Design a slab base of a column ISHB 300@58.8 kg/m, subjected to c*rtq a working load of
1500kN. The grade of concrete for pedestal is Mzo and SBC of soil is&Bbt<N/m2. Design also
length of weld required. (08 Marks)
b. Design a gusseted base for a column to carry an axial factoredulbad of 3000kN. The column
is ISHB 4oo@77.4kg/m, with two cover plates of 250x20nlm on either side. Use Mzz
property class 5.6 bolts. Sketch the base showing the detail of bolts.
Explain web crippling and web buckling in flexural member.
(12 Marks)
(06 Marks)8a.
b. A roof of a hall measuring 6mx15m consists of,'120mm thick R.C slab supporting on steel
I section spaced at 3mclc. The hall is havirtg wall of 300mm thickness all round. The
finishing load on the roof is 1.5kN/m2 and super imposed load is 2kN/m2. Design the steel
beam with all necessary checks (W.pbbrtppling and buckling need not be done). (14 Marks)
2 of2

USN 10cv755
(04 Marks)
(0t{ N{arks)
Seventh Semester B.E. Degree Examination, Dea.20lt5lJan"2016
o
6J
!
o.
5
q
(J
O
cj
()
d-
!^'
-.t:5D"
a.a
cl,
?c.
o(.)
boi
-o
>+
oj
9uotE
c=
x'+
so
tr>
o-
U<
!
op.
b. Exptrain FIEV theory with a neat sketch. (04 Marks)
c" The design speed on a two way traffic road is 75 kmph. The rate of acceleration of the fbst
movillg vehicle is 0.95 m/sec2/sec. The difference in speed between c,vertakjng anctr
overtaken vehicles is 25 krnph. Calculate (i) Safe OSD (ii) Mention the miniirrum and
desirable length of OTZ (iii) Draw the overtaking zone. (08 Marks)
a. Calculate the setback distance on a national highway having horizontal curve of radius
300 m and length 180 m. Assume speed as 80 kmph and coefficient of frictior as 0.35.
(0S &tarks)
b. Derive the expression for super elevation on a horizontal curve. {08 Marks)
c. Calculate the extra widening required on a single lane one way road havirig a horizontal
curve of radius 80m, with a wheel base of 6.1 m. ({t4 Mariks)
PART _ B
a. Ditferentiate between Summit curve and valley curve.
b. Derive an equation for length of valley curve for
(1) Comfort condition
(ii) Headlight sight distance when i) L > SSD , ii) L < SSD,
c. A sumrnit curve is to be designed for a speed of 80 kmptrr, when two grades +1 in 50 and
-1 in 40 rneets on a curve such that SSD and OSD of 150 m and 600 m respectiveiy. Due to
site conditions, the length of summii curye is restricted to less than 500 m. FirLd the length of
sumrnii curve to fuIflll both the safepassing sight distance and safe stopping sight distance
llighway Geometric Design
Note: 1. Answer any FIVE full questions, selecting
wtleast TWO qwestioms frotn each part"
2" Assuyne uruy missing data switably as per IRC sisndards.
PART * A
a" Write a note on (i) Design speed (ii) Design vehicle.
Also list the various specifications for each as per IRC standards" (trO &{anks)
It. Expiain the various objects of highway geometric design. List the various geometrie
eiements to be considered in the highway geometric design. {10 Mart<s}
a. Explain at least two objectives providing (i) Camber ...(ii)-Medians (iii) Right of way
(iii) Kerbs. (oB r{arks)
b. Draw the typical cross section of the following with relevaret dirnensions:
i) Two lane city road in Built up area. ii) Divided highway in urban area. {08 Marks)
c. In a road test f,or measuring skid resistance, using skid resistance equipnrent, the timer
indicating 5 seconds of brake application and the braking distance indicatecl by the colour
spray was measured as 35.0 m before the vehicle was brought to stop. What is the average
resistance of the pavement surface? (04 liarks)
a. What is sight distance? Explain briefly the three important sight diste.nce situations
considered in highway Geonretric Design. {08 Nfarks)
requirements.
I of 2
{08 Marks)

10cv755
6 a- Virite a note on : (i) Gap in medians at junctions (ii) Channelizinglsland. (10 Marks)
b. Briefly explain the channehzed. and unchannelized intersections, their advantages and
disadvantages. (10 Marks)
7 a. Briefly explain the design steps inv6lved in the rotary intersection aiong with relevant
fcrrmulae employed. (10 Marks)
b. D,raw aneat sn<etch of
(i) Diamond interchange (ii) Half clover leaf and explain any TWO advantages of each.
(10 Marks)
8 a. Explain the importance of highway drainage. (06 Marks)
b. Explain the design procedure of filter material used in subsurface drain. (08 Marks)
c. A longitudinal channel with a trapezoidal cross section is to be constructed in a cut section.
The longitudinal-slope is 1 in 25A0, soil is clay with Manning coefficient as 0.024. Take
dischargeof3m3/sec,andvelocityofflowas0.6m/s.
* ,< * {< * .i .
+{'t
2 of2

7th Semester (Dec-2015; Jan-2016) Civil Engineering Question Paper

Related slideshows

More Related Content

7th Semester (Dec-2015; Jan-2016) Civil Engineering Question Paper