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10cv61USN

Sixth Semester B.E. Degree Examination, June / July 2014

j, Environmental Engineering - I ::

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E Time: 3 hrs. Max. Marks:100!w

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E '" Note: l. Answer any FIVEfull qaesfions, selecting ,r.'',t"' ,"'""3....,!lv]v.-.,-,,:.,.".,:::{^--.".!**":""""".""i",Eo :,,, ,,,,,, atlesst TWO questions from each part.

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E d". 2. Druw sketches wherever requiredd E 3. Assume any suitable missing data. h,-

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-ySE A PART_A=o0 ,,

:E i I a. Discuss the enviroyrmental pollution due to human activities. (06 Marks)

H ; b. What is meant by per'capita demand? List and discuss the factors that affect the per capitagUe ; demand. . (06 Marks)

E E c. The following is the popu.l*i.pn data of a city available from past census records. Determineo>A A the future population of th+=city in 2030-'b5'i) Arithmetical increase method and.E b ::\ /:1^^*^+-:^^1 :^^-^ ^^ *^+i,+i= .....:. tno rr--r.-\A A the future population of the city in 2030-' ' i) Arithmetical increase method and

+ E ii) Geometrical increase metho$i"" ,, (08 Marks)-.E rr,/, uvvtllwtllw4t ltlwtvoJv rrrvtrrvy.BEE*E -! lToputationlzsPooto!o0qGd't! t

; E 2 a. What are the intake structurek*,Eiplain ttp'.,ilbctors to be considered while selecting a€ 6 location for intake structures?. (06 Marks):)fl ! b. What are the factors affeaffi selection of a partiedar type of pump? (06 Marks)

; t c. Water has to be suppl,,id to a town with one lakh p.oplation at the rate of 150 litres per

3 * capita-p.r-dly lonn,a river 1500m away. Th9 diffe_re1ce ln elevation between the lowest

:, g water level in.ffipimp and the reservoir is 28m. If th*..dem.and has to be supplied in 8

g E hours, detesniimftthe size of the main and the brake horse p,oyq,er of the pumps required.g E Assume.meximum demand as 1.5 times the average demand. Aq#m,:, f :0.0075, Velocity

e # in the p-id9E.arrlsec and efficiency of pump 80 percent. , r - (08 Marks)

nb; g 3 a. Mention the permissible limits for the following parameters and explainn'the environmental

E g significance of each : Hardness. Nitrate, Fluorides and Iron. (08 Marks)

I I b. Write a note on properties of whole some water - - 1oo vrartg

5 5 c. Briefly explain the water borne diseases and their control. (06 Marks),j .,i

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E ...,'.',';;.4 a. Give complete sequence of a water treatment plant with a flow diagram and mention *h0(;rfi,";r function of each treatment unit. (08 Marks)

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b. Explain with chemical equations, what happens when alum is added to water? (06 Marks)

3 c. The maximum daily demand at a water purification tank plant is 8 MLD. Design the5 dimensions of a suitable rectangular sedimentation tank for the raw water supplies. Takedetention time period of 4 hours and the depth of 3.0mts. The velocity of flow is 20cmlmin.

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(06 Marks)

10cv61

PART. B

,,,F 5 a. Explain in detail the theory of filtration. (08 MarI$)

''",,,p,11 b. Explain with a neat sketch working of a pressure filter? (06 M&$'i*Al c. Determine the dimensions of a set of rapid gravity filters for treating water required for a

''-'",,;r,, population of 50,000 with average rate of demand as 180 litres per day per person-.Aisume a;;""._.1eak factor of 1.8 by ignoring wash water requirements. Assume rate o-,f. frlttaiion is

+.$0{0/lrlsq.m. (06 Marks)

, txf"&'*: terms pre - chlorination, post - chlorination, Break point c.hloittration and Superno t r- --l-_\&. i,.=. (08 Marks)

b. ChlorinUd&ee in the treatment of 20,000 cubic meter per day is 8kg/day. The residual afteru.qgs

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10cv65USN

Sixth Semester B.E. Degree Examination, ilune/July 2Ol4

Max. Marks:100 ', .

I :r:

,;;r*@te: l. Answer TWO full questions fro* PART-A and ONE full question from P,8T-8.".,t,. 2. Assume data suitably if not given and mention the same.

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g "'"""""'. *ART - A .,,{ii*''''-6 :: ,:'::

E 1 a. Sla1e.and explain different types of storage zones with the help of neat skef&., (07 Marks):-?^

E b. fne ryonttrly discharge volumes in million m' for period of Zq months iecorded at stream

r gaugii$".sfe are:3,6,16,30, 18, 15, 10, 8,6,4,3,1,2,5,17,28,2Q, -5,12,7,5,4,3 and2.

E 6.ti.-lnelrr" of reservoir proposed at the gauging site if it is to.dffi iio unassured supplyC of 8.33 miitm rn3 per month. The water year may be taken as.I@*May. (08 Marks)E betermine

i rn' per month. The water year may be taken as.5

E 2 a. Explain different types of forces acting on a gravity dam. (07 Marks)-l E z a. bxplam dttterent t s oI torces actmg on a gravfi) dam., t 't'1 '' (07 Marks)

E 3 b. Briefly explain elementary profile of a gravity dam. (08 Marks)

E98=

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tr@:E & 3 a. Explain briefly various causes of failure of earth darn. (06 Marks)d+F $ J A. Explam Drlelly varlOus ca$ry-S oI Iallure oI9&f[1O81?: (06 Marl<s)

F * b. Draw a neat sketch of ea dam showimg phreatic line with horizontal filter atYo _ .t

Hydraulic Structures and lrrigation Design-Draw-ng,,,i,''r,,..1, Time: 4 hrs.

EEq 'E c. A flow net is to be plotted for a hdruoglneous earthen dam of height22 m and free board 2.0o B - - -_-." --- -: '- :- :-- ---- --- - --- ddu9 e m. The results obtained are: :

? E Number of potential drops:,,fq*u-

I f Number of flow channels - !1

E 5 The dam has horizontal filter,of 30 m at dowffieam pnd and coeffrcient of permeability of, .$E dam material is 5 x 10a cndieU. Calculate the disclrargg p.. metre run of dam. (04 Marks)

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>qf-E PART_BE ts 4 Design the surplffiffik of a tank forming part of a chainuftanks.H : combined catdhft#frt area 1#'* 2s.8s sq.km

1 e Intercepted catchment area ':2O.71 sq.kmF q Maximrm rrater level : +12"75; ii F;n';;#1;;;i-' - -' : *ii.oob':Z ti Ground level at proposed site : +11.00aEGroundlevelbelowproposedweiruptoareachof6m(Fall):+10.00iE i;;ffi;'oituor. uu,a :2 m

eE Side slopes of bund on either side :2:l u "

H 0 Design saturation gradient with I m clear cover :4:l: >' Level of hard strata : +9.50 *"

'i r 1r Ryve's coefficient for combined catchment - 9 :,,,,,,::,-.t c.i |1 n",. "r"::r":"rr.. :r. :r-,'r"'r:","o,:,,:rro"r - - ,,

.g Ryve's coefficient for intercepted catchment : 1.5

z Provision may be made to make Kutcha regulating arangements to store water upto MWL

E in times of necessity (25 Marks)

g Draw:i) Half plan at foundation and halfplan at ground level. (20 Marks)ii) Draw half longitudinal section and half longitudinal elevation. (15 Marks)iii) Cross section across surplus weir. (10 Marks)

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'l

10cv65

Design a canal drop of 2 metres with following data:Hydraulic particulars of canal above drop.Full supply discharge :4 cumecs

a( ^ Bed width :6 m e,*"Wi Bed level : *10.00 m ,4:';i=;'Full supply depth : 1.5 m / K.**4''g Full r"pitv level (FSL) : +11.50 ,d;,\

*,s*' - Top width of bank :2 m ,

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-.r Top bank level (TBL) : +12.50 m ::,:::::..,,'

@iluYdePth :lm

=,.f1''.Hvdidd

,=1 4,,

lars of canal below drop. " flu-

A ^----^^^-Full suo6l$..discharse :4 cumecsBed width'':tj.,.:+I) ^ -, 1^- -^1 i::'

- + UUlileUS {"i '',,,,

:6m

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r0cv64USN

Sixth Semester B.E. Degree Examination, June/July 2014Geotechnical Engineering - ll

o:qTirne: 3 hrs. Max. Marks:JO0f,r - 1- - , / -- -, Dtl /T| -C--r, ^ -- ^^z! ^--- - ^l -,* ''rk, Note: 7. Answer any FIW full questions, selecting r". 1*S'

aileast TWO questionsfrom each part. - "s'-l.. *i= 2. Assume missing data if any. :,..' '\*avO:E '/d" {d :-"i:'- PART-A * "*,

A ) it .ffL[\l -ri

E I a. With a neat sketch of a sampler, definei) Armratioii) Insidd-dloarance . u' ;,

H i) erd,,raio *_l*

iil) Outside

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E98=:P=gE b. List and explain diffiS'11, tlpes of samplers used in s"gilM&iphng. (08 Marks)

.E A c. List the methods used for controlling ground watq during excavation. Explain any one ofE Jl these dewatering methods: ,***- (06 Marks)

Also indicate recbr--Srqended values. .. '., (06 Marks)

ods:,-**"c€.- I I ',i I n4T.Ec\ - h

imate the reouired side s usine Tavlor's stability number.Slooe ansle 90 75 60 45 30 20 10

sn 0.182 0.134 0.097 0.062 0.025 0.005 0

.=N h .{d + d1fl

E A, 2 a. List the assumptions made in Bfuiiss,,heq's ffi{&estergaards theories. (06 Marks)

! E b. Explain the: i) Pressure bulb; i$P-fbqr*re distribution on horizontal plane; iii) Pressure

E E distribution on vertical plane. - i,; * ', (08 Marks)

gA c. A point load of 1000kN acts a1.'{i{:$lound surface. Compute the vertical stresses at 8m

; E depth. :

S * i) On the axis of the load; S#*rfu*uy from'th* is.

$; Use Boussineq',s **t';,#S Y ,;+

(06 Marks)

€ b 3 a. What is flow net? Wh e its characteristics and uses?.":' (08 Marks)

E E b. Explain with a neat'stretcfr the method of locating phreatictinb for a homogeneous earth dam

H ! c. Explain the terms: i) Exit gradient; ii) Piping failure. ' " (04 Marks)Es4&! g 4 a. List thd.a3sumptions and limitations of Rankines earth pressure theory r (04 Marks)

{ E b. Explain the Culmann's graphical construction for determination of active earth thrust.

HS "" *t - (o8Marks)

F E c.."$\etaining wall, 7.5m high retains cohesionless, horizontal back fill. The tbp 3*n of fill has=-sl -^\ I 1 ., iiE (.}% unit weight of 18kN/m3 and $ : 30o and the rest has a unit weight of 24kN/mi ar 6,9: ZO".

g. & Determine using Rankine's theory the distribution of active earth pressure and t6t{}_4ctive

E * . , earth thrust. (os lt{arks)!r. I ,:

6E_i a PART-B: : 5 a. What are different types of slopes? Explain types of slope failures. What are the causes of:: slope failure? (06 Marks)

E b. f,xptain the method of slices for stability analysis of sloper. ^ (08 Marks)

E c. Anembankment isto beconstructedwithC:30kN/m2,i:20o,r:18kN/m', FS:2andE height l0*. (o6 Marks)g-

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rr-I

6 a. Explain the different modes of shear failure with the help of neat sketch. (06 Marks)

b. What are the assumptions made in Terzaghi's theory? Write the expressions for ultimate

bearing capacity of sirip footing, square and circular footing. (06 Marks)

,i. c. e strifroogrng'l.2m*idr ir supported on a soil with its base at a depth of lm below grouqd

.',1r.l surface. The soil properties aie C = 15 kN/m2; $: 28o,yt: 1&kN/m3, Y' : 10klh#;,, 1, Determine the ultimate bearing capacity if water table is i) at great,a"plh: ii)at the l6vpl of'''t",4,.; footing; iii) at ground surfacel Take, N. : 32.36, Nr : 18.58 and N. : 15'7' Use'T#zaghis

,{,..:= +L^^*. " . '(S8 Marks)

10cv64

theorv.v theorv. &q .\-- -.------*/

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ij 6_

7 a. " U4n, r) Immediate settlements; ii) Primary consolidation qdttldm"*:-- Tlnff&_q-raary consolidation settlements iruu

* (06 Marks)

b. BrtirrrbelU.immediate settlement of a footing of size 2mx 3mreptfud%t a depth of l'5m in-

;il;,it$-*hor. compression modulus is toN/mm2. Footir&transmits a pressure of

iooti.ri-'. t*p p : 0.3 and influence factor as 1.06. d,51'= (06 Marks)

c. it. mffo*mfiepqgts were obtained from a plate load test Conbucted on dry sand stratum

using a square p

Determine the120kN/m2.

size 0.3m.

settlement

8a.b.

c.

Explain the factors influencing the i$n of depth of a foundation.

Write a note on selection of on soil stratification and load carried.

intensity of(08 Marks)

(06 Marks)

(08 Marks)(06 Marks)

- dE9;%*d-*$

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,oExplain the classification of pile'&ondation. *;... -

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& q:"'ii-"tqd"1sj i

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USN10AL61

(05 Marks)(05 Marks)

Sixth Semester B.E. Degree Examinationo June/July 2014Management and Entrepreneurship

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gD.

3 hrs.Note: Answer FIVE full questions, selecting

stleast TWO questionfrom eachpart.

PART _ A

(10 Marks)(06 Marks)(04 Marks)

*,\-'..In detail, discuss od.llfr omen entrepreneurs". .'t $ (10 Marks)

.ii,,,,,., ,,*,,. /, A f,r^_r-^\, entrepreneur and manager. (10 Marks)

Max. Marks:10,0'.,

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of planning. (10 Marks)(10 Marks)

(10 Marks)

Discuss the characteristics of motivatid+i. (06 Marks)

Define co-ordination. What are itsde eteiistics? (05 Marks)

Discuss the meaning, importa4ce and factors go\rsrning the span of management. (10 Marks)

What is leadership? Explain. n " (04 Marks)

,?,-$n,hot'

Differentiate between co-ordina{ion ahO co-bppqption. (05 Marks)

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;-",1"' PART-B

=., " 'x,*jt .....aa...

Explain act of llberalization, privataation and globaliza@small t.rr" tl#;jil;

Compare i

for project scheduling.With a brief explanation, explain PERT and CPM.

nlffiGarT and WTO. ",su (06 Marks)

F{pPr thg IgF-9r: (08 Marks).'1i)''SSIB ii) NSIC iii) KVIC iv) SIDO.

...:.........:.

Explain the role of SSIDC in development of SSI. (06Marks)

Explain the role of district industries centers. (06JWaiks)

Write a note on ICICI and IDBI. (08 Marks)' ::"1'""':::'

Explain the Guidelines by planning commission for project report. (10 Marks)

What is network analysis? Explain its importance and list the various networking techniques

c.

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