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QP Code : 3{628

{3 Hours} tTotal Marks I 80

\ore l. Attempt any 4 out of six questions .-.*"2. Question I is compulsory \-i. Assume any suitable data where ever required ary

t\JQ.; Aitempt any four q\

a. What are the methods for improving the stabilify of slopes 0S)j.:1.\

b. A reaining wall 6m height with a smooth verticai back fill is pushed against soil mass 6-.!05trivine C+0l$ymz andl=150

-19ftI'{1m3. What is the tstal Rankine fassive pressuryg?'

if the horlaonial soil surface carries a load of 50 L.N/m' Wh"t is the poinq olF'-{'appticarion of resultant thrust

..,(r

,l)e. Explain tbe adv'antages of reinforced soil ,^f 05

_-.-"f. Explain the limitations of plate load test ,1f 05

Q.2 a- Explain the friction circle method for finding faoto, of safdffislopes ' 10

b. A section of canfilever retaiuing wall as *nl*n in dq;" back fill has C:0 +=410 t05l6kNlmr .water'table is eonsiderable depttr.lQ6{v ground surface. the Backfill 'carries a uniform surcharge load of 35ld-l/ry-hJ*ck the stabilify of retaining wallassume the mit weight of concrete is 24kN/p|{afe bearing capacity oisoil beiow thebase is 500kN/mr .1p"

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QP Code : 3t 628

Q.3'a Deterrnine the active thrustfigure

G,L_

{'= e{{,5.r"1 { = l*rruf m3

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' l8t<ru1'ng

5rQ.4 a. A iectangular footing 2x3m rests on soil with its base at l.5m below ground ,urfu*qf OA

caiculate the safe bearing capacity using the factor of safety 3 on _r .-(, Net ultimate bearing capacity (4'(ii) Ultimate bearing capacity of soil having following propenies C=tN/mi

{:360 1:18 kN/# .\v-

b. Briefly explain group capacity of piies ""

.'$=" ,06

lyc. Explain apparent earth pressure diagram constructed for non uniforu sbi) deposit 06r\J

Q.-( a. A square piie group of 16 piles penehate through a filled up rq$f S* depth. The pile . 10diameter is 250mrn and the pile spacing is 0.75m. the unitp@sion of the material is18kN/m3 and unit weight ofthe soil is l5kl'I/rn3

"o*prtqQYoegative skin friction on

thegroup .(r'osb. Describe briefly Rehbann's graphicai method for a1Qivts earth pressures 10

Q.6 Answer any four of the following ,t9-tg r^

Differentiate Tbrzaghi's and

c- A canal is having a side sicpe I is proposed to be constructed ia a cohesive soilsurface. soil properties are given as C:12kN/m2

tor's stabilif.v number furd the factbr of safety with' respect to cohesion failure of ban-k slopes(i) When the is fulI ofwater

2

and point of application on retaining rvall as showu in l0

*c.ay*

(y-\-\

.-r{F

a.

b.

to the depth of 5m below

0=l50 e=I.0, G=2.65 usu-q

' -':i;11r::.r,;;i;t,. r.. i 'i,r :' i

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^ $FW-Con.8{ 55'{ 5',^( \

n_\

'tb'.A'$

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d Exolain

sudden drawnd.own of rvater in'rhe canai

in the retaining wall

-fE- Sewr[ CB & S. yl.^:- Jun{ 2916 Civr'\Sub - DOSSt6lsl te

Q"F. Code z 577401

i4 Hours) {TotalMark-80

N.B.- tl)Question No.1is compulsory. rC{2} Attempt any three out of remaining four questions- N

^bts{3} Assume suitable data wherever necessary. Use steel grade Fe 410. S}-tA) Use of tS-8ffi, lS€75 and steeltable is permltted during examination. ;|

o.q t

Design the typical principal rafter, main tie and an interrnediate strut fo(fE (32)

steel roof truss shown in figure. Use following data'

Centre to centre spacing of trusses= 4 m.

(-rTotal dead load on a truss 400 N per m2 of plan area. Live load as@r 15 875

lrfi-J laa-{ - 'f {nfl ft/*2 fe..^r!^- g. ^^,*ol 4a La*h clnno<} ^yffird load = 1100 N/m' {suction & normalto both slopes} /i's+'

Y

tl,4m

-L

{r

{Ljnit wt. 20 t't/mu}

+larr!a;.

oR nq. -

Figure shows the typical flasr plan of gtFel building. Design the beams 'Sr'

ani '82'. Top flanges of allthe bear"rla$/* *t the same level and embedded in

r-cncrete of 150 mm RCC slab. *QftIsign the connection between these two

t32)

beanrs using bolts of grade a.fuQse following data-

imcosed load = 3 KN/m2. FSS finlsh load = 1.5 KNlm?.

Ali beanrs support 150 E&ihick

brick wall, 3.5 m in height.

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Q.P. Code :577401

2

Figure shows the plan of a built up battened column consists of 2 lsMC 350 {16}

spaced 320 mm apart as shown. The lenglh of column is 8 m. it is effectively

held in pcsition at botl'i ends but restrai*ed against rotatio* at cne end only' ^ o'\"

Find the limiting I*acI capacity (axiai) of the colt'lmn. Also design the end z)", rr -r .-\"

hatt*n & interrnediate batten including their csnnections using black bolts of Sl.-*-\suitahle size. Draw neat sketches i.e. plan & elevatlon.

rs*4c 351)

x

d-s

r\\:'. v-t-\-'

^+-i A huilt up cohirnn consists of an |SHB 450 S 8it.{Fg/m along witfr a csver i16i

plate of 400 mm x ?S rfim, attached te ear<$$lange using black bolts *f

suitable size" The length of column is 5 m k6u b*th ends effectively held lt''t

posirion a*d alsc restrained against tq;Qlion. Calculate ihe limiting load

capacity (axial) of this column. also $fgn the suitable colurnn base and its

connectio*. Tl"ic coiurnn ir made to.G\i an a pedestal of ccncrete {grade M20'

Draw neat sketches t+ show *pHum structurai details. Design of co*crett

pedestal is not required. +X4ta) A bearn ISMB 350 is tatE#V unsupported over an effective spnn of 3'5 m' {8}

Carry out section clag$ffr*tion and hence find the deslgn mornent capacity of

the beam Us* tabiqffi lS 800 to find required stres$es.

c--4 (h) A beam rsrvrffio *ansmits an end reactio* of 250 KN {factored} to the {8}

fiange of _S\"olumn ISHB 250@ 51 Kelm. Design welded stlffened seat

.oonu.q&Lu,*uun these cornponents, Use shop weld'{i(?"

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Q.P. C*eIe :577401

A 1S mrn thick bracket piate is connected ta tha flange +f a colurn* ISHB {8}

250 €) 5a,7 Kg,/m using I bolts of 20 mm diameter of grade 4,6 as shown in -:-3

figure. Ass1in1e pitch of bolt = 60 mm & end distance * 35 mm. Find the safe {{"load'F et an eccentricity = 2ffi mm, the bracket can transfer' Sry

?.$rmrr* t F(!rt'r)+,(ral)

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A welded piate girder af span 25 rn is later$/i'upported thr*ughout and {16}

requined to carry suoer[mposed udl 100 Xfrf/$i'v*r the entire span. The girder

rviil not have intermediate transverse stiffrrers, Design the most economical

section. Proyide suitabfe curtailmentg{ffange plates if necessary. AIso designIJ

tiTe weid ccnnection between web_&JIange plate.

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( 3 Hours)

\.8. : 1) Question numtrer one is :o1p:ltotl ^,,^.2) Attempt any three of remaining five quesltons'

3) Assume suitable data if required'

4) Drar'l neat sketches rvherever Eecessary'

1 . So1r,e an1'four olthe foliorn'ing: . r ^i * ^^*i^rrc {tA) Enlist * t*pf*it' factors lffecfinS

design periods' -.rY-

B) \tr-hat u'"'t"t-thu'acteristics of hazardous wastes? +f

C) ExplainBt;p"*tof chlorination' I

D)Statethef*o"affectingto"uiio'oflntakeStructure'(i'E) Explain Dead End & Radial rrrffir";;';; distribution *ttp@:ketches'

2. A) Design a rectangular sedimentation tank to tteat2MlD ssuttt' Assume 10

detenticn time of 3Hrs. * now tifough velocity of 7'5 e1fu"*i"' if the depth

of tank is 3m, {ind the o'*'flo* 'xeldimensions g(tfle tank'

B) Differentiate befween Rapid 'uJ g''u'lty filter &&Yw sard filters 6

c) Describe wirhneat sketch d;;r?;;g orpr.rggf't'"t' 4

.+c-

3. A) whar is leachate? How leachate i, ,oxd'o in the iandfill site? Explain ls

B) Htff,T::lr::'*, methods oraisinsfo-n & irs suitabilitv. 10

, ffiution of 1,00,000 which is to be Served 10

by a 200 lit/head/day waterp$pply'

B) Explain ;:1,r"-,;@i*, uiotogi.al characteristics of water' write 10

the standards for Potah{fiiater'

.-q* ---r+1- *o,rr cl-efnh 10' \ ith neat sketch' I u

j -\) Define rvateruo@t''tg' Explain i::1t::1":,t1,I",.,^,n anv one in detail. 5;l illl"#:Trffi::;;""il-'"':';':::'^'::.::*:il'Yoneindetail :Ci ShortlY tlr" rrr..h*ism of floccrrlation & coagr.r1ation^

,-_,t 20

6. \tr'rite shoS\rLdte on following (Any four)

D -($ources of solid waste'

.p$ R"*oval of lron & Maganese'

oh) Tube settler

<S ttf water bome diseases'

+f U Appurteaances in distribution system'v-

+/,, ',^.^.\

^..tuoQ\)\-'s

bllbQP Code 577700

I Total Marks : 80

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9"b' 4r-r-E %loal e-a u'

QF Gode I 3{&55-1-

(3 hours) ,i*-'Note: Mar Marks: 80

^ay"V1. Questionno.l is compulsorY ,<;,2. Solve any3 questions outofremainiug ,$3. Ass:me data wherever mcesstry and clearly mention &e assumptiors made. Oq'4. Draw neat figuros as required. {fl

Q-1 Solveany four *bf 20

Q-\a) Define specific force md explaiu specific force curve in detail.

,;\ ,t

b) Erylain 51, 52, 53 profile in detail with neat sketch. C)'J,-\r-

c) Whatarethe defects in l,acey's theory? i. .+V-+'

d) Ditrere,ttiate between streamlined body and bluffbody. {ye) How will you detemine whether a boundary layer flow is aq5$fi flow, detached flow or

m&e verge cf se,parartion ,rS'eJ a) Assmine ihat the veloc$ disribution in E5$fuarv hyer is glYetr by 10

?(rf ''calculce T,3 * f. ,r u, u ""*rb=Y*on,

free srerm velocitv v was

observed b be 10 m/s and the thickness of lh6)iundary layer as 25 mm" tlen calculate

tre euergr loss per tmit length due to thE(fffoanon of bouadary layer. Take P = 1.226;''^'-- *T-b) DeriveVonKarman's momerltumrdd Eguation' 10

^{)e j a) A cy,linder 1.2 m in aiameteri@Jated about its axis ln air having a velocity of 128 km

per hour. A lift of 5886 Ngp\'meter length of the eylind.er is developed on the body.

.{ssuming ideal fluid th.qod, find rotationat speed and the location of the stagnation

points.Takep:1.236Jffi3.-t -

b) Ametallicballof.@he&rZX10-3dropsinafluidofsp.gr-0.95andviscosiry 15poise'

The density of;{eXeatic ball is 12000 t<g#' ninA :

c-v(i) Sddrue force exertedby fluid onmetallic trall'

(ii) 4,rOihe pressure drag and skin friction drag"

glH fne terminal velocity of ball in fluid.,\,/

t\

(y-,/

\Y+F

i^'\\..i.RU-Con.{ 0925-16.

1S

10

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F

ts.T"O

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Q.4 a)

b)

&P Stlde : S{655

Define the best section of channel and derive the conditions ofbest trapozoidal charnel 06

section.

A flow of 100 litres per second flows down in rectangular laboratory flume of rvidth 0.6 m 08 -*--

md having adjusmbte bottom siope. If Chezy's C is 56 daermine the bottom slope -CInecessary for uniform flow with a depth of flow 0.3 m- Also find tle conveyance and the

,O:tstate of flow (i-e., ffanquil or rapid) +{"

pt/o qf 06What is Chezy's fonnula? Howitis derived? Showthatthe Chezy's coefficient C:-, ,;S'where R is the hydrautic radius and n is the 1y{anning's roughness coefficient. -*qF

c)

Q.5 a) In a rectangular channel 3,5 m wide laid at a slope of 0.0036, uniform no* o$utde,pth of 2 m. Find hox, h'igh can the hump be raised without causing amp&\f tleupstream depth of flow is to be raised to 2.5 r& what should be the hei8ht^qfi& hr:mp?

Take manning's n equal to 0.015. . O/+b) A trapezoidal ohannel having bottom $,idth 8 * fi'O side slope 1:1, cq$/s a discharge of

80 m3/sec. Find the dep& conjugate to initial depth of 0.75 m,@pre the jump. Aiso

determine the loss ofeirergy in the junrp. .;\v

Q.6 a) Compare Lacey's and Kennedy's silt theory ^+"

b) What do you understand by (a) regime channel, C)j[6t and permane,nt regime ofchannets? O-

e) A stabte channel is to be desiped for a aiscn4$fof 40 m3/sec aad silt factor of unity.

Calculate the dimensions ofthe chamel using OteV's regime equatiop. Also calculate &e

dimensions of the chronel if it were to be 4c$gned on the basis of Kennedy's method with

C.V.R equal to rmity, aud &e ration of@wiOtr to depth if flow the same as obtained

from Lacey,s method C,Cf

10

10

05

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Q.P. Code : 577602

( 3 Hours) ITotal i!{arks : 80

\.B. : (1) Question No I is compulsory. .$C{.2) Anempt Any 3 out of remaining

""bi3i Assume an_v suitable data wherever required. Srys

l. tai Trace the history of road development in India in a chronological order...,QtS

ibi r*'hat is breaking distance? Calculate the breaking distance for a movirl$- 5

vehicle design speed of 100KMPH? $'t c) State and briefly explain the reasons for strengthening the edge andqiWmers 5

t{}

of cement concrete slab. .}'\!hat is fatigue behavior of cement concrete road? State the@Yationshipberr+'een fatigue life and stress ratio j,O"

.cl'\{ention the essential requirements of bitumen suitabFfor road making.

ri; i F{orv much .up(ti- is to be provided on a road having with of 7m with

-,-a+

\-F^a\i,

,21!=

t.- TURN OVER

Describe briefly the prescribed laboratory tests iq:#der to determine itssuitability for road work. ,tF

i b r The speed density relationship for a partjffar road was found to be 10

V=42.76-.Z2K,where K is the density in v5ftlc1es per Km. Find the capacityof the toad.

. Cq",kr at A nvo lane road with a design spqflof SOKMPH has a horizontal curve 10

rr-tth a radius of 480m. Design tl@Yate of superelevation for a mixed trafficand calculate by how much tlprVuter edge of the pavement should be raisedu-lth respect to the centelftde, if the pavement is rotated with respect torhe centre line. +'

rb t Expiain the method $Nrvestimation of design traffic for flexible pavement 5

design as per lRc4pbmmendation.

:.-/

.q\N$

@

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+.

Q.P. Code t 577642

2

(a) Design a regid pavement making use of westergaard's wheel load and 10

warping stress equations at edge region of the slab. The design data are

given belowDesign wheel load : 7500kg, Contact pressure : 7.5kglcm2, Spacing

between longitudinal joints : 3.?5m and contractions joints is

4.2m, Etrastic modulus of the pavement material/CC is

3 x t 05kgicm2, poisson's ratio:0.15, Modulus of Sub grade

z\J\*

61 \_s

>..

reaction :30kgrcm3'Thermal co. eff. of cc peroC:1 X l0-s /CC, FleISilstrength of CC:45kglcm}, Max temperature differential at the loc4-tidn

for pavement thickness values of 24,26 and 30cm are respectiy*ly

i;;"i;.;;il'i;;"c. calculate the desired ractor "r ';r;toq?h

respect

o 10a stress an wa 1n e ress at eoge "regtLln.

L L,t C Llt C$I 0.00 { 0.720 I ^8bso2 0.u4 6 a.920 10{ 1,075

J 0,1 75.1 1.030 LdN' r.0s0

4 ()"441) I r.477 .ivi 1,000

what do you understand by penetration rtai#dam? Describe

ted

(b)

s. (a)

the method 1{}

of, consirlicl.i<-rn. ka'CThe BBD studies ..,rcre carri.A out.(Fu highu,,ay pavement wrth 50mtl

thick bituarinous surface .oqrg* when the mean pavement surface

temperaturs v/as 40"C and the 6Eld moisture content of Subgrade soil was

5.5%,the soil is found to b.qphdy soil. Determine the corrected deflection

value after appilring cor51.&ions.

A failed cement cong1}{e pavement is to be strengthened by providing

bituminous corcre^tq%;erlay. Briefly discuss the method to be adopted.

,,({A vehicle is affitating on a gradient of 159'o (upwards) with a rate of0.Sm/sec2 $[-i initial speed of 15 to 25KMPH. Caiculate the various

resistancp$couutered by tite vehicle using the following data

f lAa;f,bYthe vehicle :1500kg , 2.Co. eff. For roliing resistance : 0.02

3. ffiid area of vehicle: 3.5m2,4. Co.eff. for air resistance:0.45k9,'<&,1'Assume the data ilrequired.

lti

i(|

t0

(b)

6. (a)

\-.\

ibISfate Lhe ciassification of the 1ir,e load to he corrsidered in the design of

F hrldges

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t'cl Bricflv rtesclibe tire signrfioanee

10

n,'{a'

n\,/t1NY

oi drainage systenrs in irighla,v 10

IIqn€ :sl bc*GsTR.Pc

{wod llr"l tr"rL 9atn

\.8.

. .I(1Vtl

l.

Q.F. Ccde : 5?78S1

( 3Ilours) [ Totat Marks : 80 'Je

^yQ'

: (1) euestion No.l-is ""*pq:::]'ou, of rernaining five questions. . .q>i:iAtlemptanythreeq""*:o1:.:,-x;;;*a.iu,"itc1ear1y.*<(3) Assume ""'Jr"

data whert'J'-"'it'ired and'state it clearly' ' s

(4] *iustrate ,,;;;;ers vrith r*rt,ilnonent sketches wherever reQuired' qY-

$?nAn*nP fte icllosing'

I ar Lrplain,o.'1,*Jous rypes of losses in pretensioned and post tensio$-!.

pt-3"siress'

o1' Def;ne anchorage bond' developme* O"*t:i-flexural Uonl(9t

i:lDefi,le&eerprlssionforbaiancedmornetJofresistaircefS}y'stngiy}Vleiriorced rectatrgular section 'x\

n . ' s-:rii *t th;;';ption in Working Sffess Uethod'4'O

re' ,,:r:* -d:' siear':*T'::::::ji i..jf:l'-;"ffi,1s#Jil;ilijHtl'i* 18

l**;^f',:*:r#:,T ql*#.*"";"#;: ;1;

u 1'' ^ 1s

rh-i:ri 3>steto*t*'ebeamZlS"'^xqOOg$asaspanl0m'thebeamtsiureras-td *t'n -tt"t rvire of 3dt'-'lgk)t:a at uniform epcentricity of 75

=- -d1-: in:re* prestressed "l'.'..'i;tiffi,:-*t,," percentage loss of

" P::-t:nsioning and ii) Poqb;tenstonlng' ':r* s;- *

- ' 'T- - 'r*k\ rnm:Ec35tffi"Creep strain:42x 10{ mm/mm

rzs: - = = --._:::T ::J;#;;;;; perN/mrn2 in posttension: ::e:=nsion and 2P }(IU* mlrvllrt*

''"' -t^.^; -^' "Ax i0{ for3:r]r =::- :T

!:----i:;; J':;'J.il{"?;o ' '0" for pretensioned and 220 x 1

r:n'.r; ..=. ;;;;$*** ;5;;ij;;p ;:ffi i;'oraseu- = -

- ::':tei-lc6*Yol ilnctloil rur wa* 1{}n'

I lo::* f: : :.' t *'3'-1"=t :r:'t i 1r.-'-rn: having ciear dimension of 4 mX 5m' Take

- . :i-:: ll]'.';ii'''--;; -r.{ lr-r Fe 415'. i ---:--:=-..--'-.*-:':'-i--'):--i*5iEt-chsiio'*ingreinforcementdetails'1$

: - -: ; ,13:'-r :: --' ='' -''Hc'Lr in carl' :i0C k'N axtal load "Ott'rtn'

- ; I I : . 1-:::- '' SI{ -r \1 15 ' c--= 5 }'4pa and for (ts": lvu-_.-...-

.:- TURF{ OVER

L

f

4.

Q.P. Code : 57788\

ta) A doubiy"reinforced concretc beam is 250mm rvicle and 500 mm cieep frorn the 10

conlilrcsslon edge to the centre of tensile steel. The area of cotlpression and

tensile steel is 1+00 mrn' each. The cetlter of cotlprcssion steel is 50 mm from

the contpression eclge. If the bcatrt is subje:cted to a benriing moment of ,(-

80 kN;.m, Deterntine thc stless iu coilct'ete, tetlsioll steel and compression +''steei" Thke m :i 0'98. .a.I

(b) Ijrplain Pr.e-rension aild Post-tensioir fIestICSSlns slistetns. _s'

(a) Explain tirc cot'iditlons r','hei'i a doubi-v reirliorced beatrl r:; provicled' \\&&i is 5

tnot,ent of'resistance of a doubil'reitrforced beam? €(b) \\rhy irigh strength concrete irnd steei is used in pt'esttesseS\hncrete 5

constructron? : ..'.,"..--

. -r.r,,n-.,-^.o-, -t'?:- ^t-ective 10 {(C) A PSC bcan.i of sectioi-i l20nltit u'icie by 300mrn deep is usedq*r an ei

span 6m tc-r suppor,, a uOi of -i kN nr rvhich includes the sclf tlpht.ofbearn The

beam rs prestresscci bY a straigiit cable canving a lor ce'^{3-zOc kN located at

cccentr.icity of 50 rlm. Detennjne tire location oitlu"'i5(Se in the bca.m atld iliot

iis Iosirrorr ar quartc; .urd cetttt'a] sptn secLioll. .i$'..+"

(a) A prcstressed ccncl'eii Lream i25 mnr x 35[r lNb),, size sr-rpports u'd'l of 5 kNr 5

rr incl,ding sclf *'eigirt. The bearn is prg$ssed b1' a parabolic cable with

,osition 50 n-rm iroi':-, sofirt at nrid sirlnG)d 150 nrn'r fron-r soffit at suppott'

Co,sicicr spatl as 6rrl s,:lp1r' supportcrd6ryld tire ceble cau'ies 200 kN pres*'ressed

force. Locate pl'cssr-lr- iir,e aiong t\q$an(b) Design the fboting l,rr' :i reinforcg$oncretc columtr 230 x 450 mm ca1ry1ng 15

an axiai load of l lirr i.1. Thl6siLing capaci[' of soil is 150 kNlrn2.use

5.

6.

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