CStMI EXAM2 0 11 - Civil Service Eligibility| Indian Civil Service … · 2014. 1. 24. · CStMI...

24
CStMI EXAM2 0 11 - - SI. No. F-DTN-M-DJWB CIVIL ENGINEERING Paper II Time Allowed : Three Hours Maximum Marks : 300 INSTRUCTIONS Each question is printed both in Hindi and in English. Answers must be written in the medium specified in the Admission Certificate issued to you, which must be stated clearly on the cover of the 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 the Admission Certificate. Candidates should attempt Question Nos. 1 and 5 which are compulsory, and any three of the remaining questions selecting at least one question from each Section. The number of marks carried by each part of a question is indicated against each. Notations/terms used have their usual meanings, unless otherwise indicated. If any data is considered insufficient, assume suitable value and indicate the same clearly. Provide diagrams in the answer-book wherever necessary. A graph sheet is attached to this question paper, which may be detached and used, if required. The graph sheet is to be securely fastened to the answer-book. Important : Whenever a Question is being attempted, all its parts/sub-parts must be attempted contiguously. This means that before moving on to the next Question to be attempted, candidates must finish attempting all parts/ sub-parts of the previous Question attempted. This is to be strictly followed. Pages left blank in the answer-book are to be clearly struck out in ink. Any answers that follow pages left blank may not be given credit. SZ177 31 -011 EFT frc7 ref< 77- cri Prei CR- Eg VI tl

Transcript of CStMI EXAM2 0 11 - Civil Service Eligibility| Indian Civil Service … · 2014. 1. 24. · CStMI...

Page 1: CStMI EXAM2 0 11 - Civil Service Eligibility| Indian Civil Service … · 2014. 1. 24. · CStMI EXAM2 0 11 SI. No. F-DTN-M-DJWB CIVIL ENGINEERING Paper II Time Allowed : Three Hours

CStMI EXAM2 0 11

- - SI. No. F-DTN-M-DJWB

CIVIL ENGINEERING Paper II

Time Allowed : Three Hours

Maximum Marks : 300

INSTRUCTIONS Each question is printed both in Hindi and in English. Answers must be written in the medium specified in the Admission Certificate issued to you, which must be stated clearly on the cover of the 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 the Admission Certificate. Candidates should attempt Question Nos. 1 and 5 which are compulsory, and any three of the remaining questions selecting at least one question from each Section. The number of marks carried by each part of a question is indicated against each. Notations/terms used have their usual meanings, unless otherwise indicated. If any data is considered insufficient, assume suitable value and indicate the same clearly. Provide diagrams in the answer-book wherever necessary. A graph sheet is attached to this question paper, which may be detached and used, if required. The graph sheet is to be securely fastened to the answer-book. Important : Whenever a Question is being attempted, all its parts/sub-parts must be attempted contiguously. This means that before moving on to the next Question to be attempted, candidates must finish attempting all parts/ sub-parts of the previous Question attempted. This is to be strictly followed. Pages left blank in the answer-book are to be clearly struck out in ink. Any answers that follow pages left blank may not be given credit.

SZ177 31-011 EFT frc7 ref< 77-cri Prei

CR- Eg VI tl

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Section 'A'

1. (a) (i) Which building block/s you will like to use for a sound and thermal proofing of a studio and why ? 3

(ii) Natural/Mechanical/ A.C. — Which cir-culation and cooling system is best suited for our country and why ? 3

(iii) Which sampling procedure/principle you would recommend for quality control of R.C.C. work of a mass housing project and why ? Serial/Grid/random ? 3

(iv) Resource allocation and levelling will completely upset and change the optimum time schedule as obtained by crashing of network based on costs only. Comment. 3

(b) (i) Which cement will you recommend for

— mass concrete

— low permeability concrete

— high strength concrete ? 3

(ii) Which type of cement concrete you will recommend for 'blast resistance purpose' and why ? 2

F-DTN-M-DJWB 2 (Contd.)

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a 1. )

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3

(ii) 'Res a gf-d-e-th chid' * f r fmtl

7*-R k Th**r 741-r a-24-r441 ? 2

F-DTN-M-DJWB 3 (Contd.)

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(iii) Illustrate briefly one estimation method for one bedroom house. 5

(iv) Which compaction and consolidation equipment you recommend for quick construction of a high rise building and why ? 2

(c) (i) Briefly discuss factors contributing to the ownership cost of a heavy construction equipment. 3

(ii) Briefly elaborate the factors contributing to the rental value of a heavy construc- tion equipment. 3

(iii) Explain the functions of 'spurs' in river regulation. Also state the parameters on which design of spur depends. 6

(d) During a particular stage of growth of a crop, consumptive use of water is 3.2 mm/day. Determine the interval between irrigations and depth of water to be applied when the amount of water available in the soil is (i) 35% (ii) 75% and (iii) 0% of the maximum depth of available water in the root zone which is 100 mm. Assume irrigation efficiency to be 60%. 12

F-DTN-M-DJWB 4 (Contd.)

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(iii) t @TZT9" WU (Ai •tcfri t 197 afitt

arr*79- %.T 0-cr 4 wJR-4- 5

(iv) than 3/4 efv -Wm- 3/4 kg

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12

F-DTN-M-DJWB 5 (Contd.)

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(c) Explain the impact of flood wave on river water levels and flood travel time and explain the terms 'prism storage', 'wedge storage' and

`Negative wedge storage' with a suitable sketch. Also write an equation for flood

routing where storage is expressed as a function of inflow and outflow in the river leach. 12

2. (a) A small CPM network has the following data. Establish the optimum schedule for (i) minimum cost, and (ii) minimum duration if the indirect cost is it 3000 per day and all normal total direct cost is t 2,00,000 only.

Atli' vity

Following Preced-

ing

Duration, days Time cost

curve

slope in

T/day

Normal Minimum

A D& E — 8 6 2000

B F — 12 8 1500

C — — 20 19 2500

D — A 10 9 3000

E F A 5 3 1000

F — B & E 10 9 2200

20

F-DTN-M-DJ WB 6

(Contd.)

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417 mei citil r aitift-45 tc1: MIT WM'

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1

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T isrfaraw *

A D& E — 8 6 2000

B F 12 8 1500

C — 20 19 2500

D — A 10 9 3000

E F A 5 3 1000

F — B & F 10 9 2200

20

F-D1N-M-DAVB

(Contd.)

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A 10 W s 6

th,f)1

)---"0-4 to

(b) (0 A part of the network is drawn as follows :

Tabulate the dependencies as shown. If actually Z depends on B & Y and R depends on Y & Q only is there any error ? If yes name this error, and redraw the corrected network. 2+2+6=10

(ii) State and explain factors which influence the silting of reservoirs. How this affects the useful life of reservoir ? Also explain the terms 'live storage', 'dead storage' and 'effective storage' in this context.

10

F-DTN-M-DJWB 8

(Contd.)

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(i) 4Z-4 1747 4:)" 7:1-19-1g, 4 R74Thl

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2+2+6=10

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F-DTN-M-DJWB 9 (Contd.)

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(c) Annual flood data of a river for 30 years yielded mean annual discharge of 30000 m3/s and a standard deviation of 15000 m3lscc. For a proposed bridge on this river, it is decided to have an acceptable risk of 10% and service life of 50 years.

1. Estimate the flood discharge for design of bridge.

2. If the actual flood value adopted in the design is 1,18,000 m3/sec, what is the safety margin for maximum flood discharge ?

(Given that Reduced mean and Standard deviation for Gumbel distribution for 30 years are 0.5380 and 1119 respectively.) 20

3. (a) (i) Compare and contrast the

— self compacting concrete and

— harsh concrete.

Where each is used ? Comment on the workability. 10

(ii) List different type of stone masonry. Explain the purpose of through stones in random nibble masonry. What is the stiching of distressed big stone blocks ? Discuss. 10

F-DTN-M-DJWB 10 (Contd.)

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30 Tin arrUtiied ZTR7Te,:in cr6FT

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6i$1{ 44T 1C11 t ? 0‘11 611. ‘lf-'47 I 10

F-DTN-M-DJWB I1 (Contd.)

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(b) (i) The following data is given for two power shovels. Identify the proper choice.

10

Interest rate 10%. A lacs Z lacs

Initial cost 2.5 3.0

Annual costs 0.5 0.3

Salvage •25 •5

Useful life 5 years 5 years

Annual quality gain Nil •2

(ii) Explain and differentiate between unit hydrograph (UH) and Instantaneous unit hydrograph. Also explain the computa-tional steps for deriving 2h UH from a 6h UH. 10

(c) What are the conditions based on which the effective length of the spillway is decided ? What are the various methods adopted in energy dissipation below a spillway ? Explain the most suitable energy dissipation arrange-ments that you would recommend for each of the following conditions.

(i) When Jump Height Curve (JHC) is always above Tail Water Curve (TWC).

(ii) When JHC and TWC nearly coincide, and

(iii) When JHC is always below TWC. 20

F-DTN-M-DJWB 12 (Contd.)

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(u) (0 e arch 11 MCI qi 147 11-4

afr4 f=7 t \Ficruiff 43Tfw 10

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(ii) PTV TWA7 424 43Tk4 141-4i PM."). 4 (i) u,chich 1-4514.11,t) (UH) err

(ii) TWNTT crT 2h UH 4 6h UH ch) jcc9q dA4 k -N7 rifluid Fold, Pt oh) 4'07 I 10

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7ff (t th) 6,Li& t 1 (ii) w 4 74*m-4 :fT4 wrwr Ow*

(iii) 7-4 4 7-q• tft dur 414 *1 20

F-DTN-M-DJWB 13 (Contd.)

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4. (a) (i) Sketch a drag line and explain function of each part. 10

(ii) List the different ingredients of a brick making clay and function of each part.

10

(b)

Which tests on timber are carried out, both along the grains and across the grains.

List the normal defects in timber with sketches. 10

(ii) Explain briefly the functions, location (with/without sketch) and design considerations of the following :

(i) Undersluices

(ii) Fall 10

(c) (i) What are the various causes of seepage and percolation losses from a canal ? 5

(ii) Explain the term "Hydraulically Efficient Channel Section". Prove that the most efficient trapezoidal section is one half of a regular Hexagon. 15

Section 'IV

S. (a) Describe the Boussinesq approach of stress distribution for one layer theory and Burminster approach of stress distribution for two layer theory in a flexible pavement. 12

(b) List human factors governing road user behaviour. Discuss briefly. 5+7=12

F-DTN-M-DJWB 14 (Contd.)

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4. () (i) Cr.* itrrCt, an ITPT %)* FIE 4071 10

(ii) tc ,F4TO 41M1 14i frEnV TK-4t 911T WSW .iect. TT ?

10 (ca) (i) 9m-rtz*k-sfi: 4 far 4 9-qr armor

frur 0-4 'crew 477, AI; ? R5r alellcbc V3/4-rEf 3/4 kil3/41r44 4141 t--1- DT I

(ii) Ott 4 PfrikiNci (R-6r rM9- R.4-) chRir uzi-rsrata76 cr-4- 3thw armr-iff TiTe. cn1C4-g :

3S3-473/4

00 WM 10 (TO (i) cw• fuy cute atmtii 14 €t qici

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317ErT t I 15

5. (W) cIT 974 Tip. if, 7*--4-if4-n- ANfritch crw trmfilzia- siwuRurr W1 cater uf-d--4R 4-d7 trw sam-k-arr1 atffisql *AV 12

(•) 110 av4l na oz441< fa4.ca wr4 z1111414i ttfr7I t14,1 acr arrfErrer--A-qI 5+7=12

F-DTN-M-DJWB 15 (Contd.)

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(c) A fixed time 2-phase signal is to be provided at an intersection having a North,South and an East-West road where only straight ahead traffic is permitted. The design hour flows from various arms and the saturation flows for these arms are given in the following Table :

North South East West

Design hour flow (q) in PCU's/hour 800 400 750 1000

Saturation flow (s) in PCU's/hour 2400 2000 3000 3000

Calculate the optimum cycle time and green times for the minimum overall delay. The inter-green time should he minimum necessary for efficient operation. The time lost per phase due to starting delay can be assumed to be 2 seconds. The value of amber period is 2 seconds. Sketch the timing diagram for each phase. 12

(d) (i) Discuss any two methods for predicting population with their relative advantages and disadvantages. 6

(ii) What are waterborne diseases ? Also discuss their control measures. 6

(e) (i) Explain breakpoint chlorination and super chlorination. 2

F-DTN-M-DJWB 16 (Contd.)

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(Tr) Rift at-Mrq q, .10 crT ,ITic-eutrr Tarr 14.-

ErWT Tr-c“9 4T Td ani)- arsr

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Up-0-1 arra-p-FFaf--gwru Rqi TT( t :

1.at ezin Tat trikgr

affa-94-ff Eiat (q) 31117(41-4 PCU's/hr 800 400 750 1000

TiITR 3T1-41711,F (s) PCU's/hr 2400 2000 3000 3000

r W471- UcIH 1st) (14-14 RTr

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otfici-arftfir Fqx 67 I 12

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6 (37) (I) R----1- 14s gdiaciAut awr aff-d-49-1-ewk-ur ti

-(F-47 2

F-DTN-M-DJWB 17 (Contd.)

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(ii) Determine amount of bleaching powder required annually in a water treatment plant treating 10 million litre per day of water if 0.2 ppm of chlorine dose is required. Available bleaching powder contains 30 per cent of available chlorine.

10

6. (a) (i) Define probability density function (pdf) and cumulative density function (cdf). Draw pdf and cdf for a Normal Distribu- tion. 5+5=10

(ii) Define Running speed, Time Mean speed and Space Mean speed. Explain method of measuring spot speed using Enoscope. 4+6=10

(b) (i) Explain different types of road signs with examples and sketches. 12

(ii) Explain sequential transportation

planning process. 8

(c) (i) Design the spacing and size of the dowel bars at an expansion joint of concrete pavement of thickness 20 ern. Given the radius of relative stiffness of 90 cm, design wheel load 4000 kg, load capacity of dowel system is 40 per cent of design wheel load. Joint width is 3.0 cm and the permissible stress in shear, bending and the bearing stress in dowel bars are 1000, 1500 and 100 kg/cm2 respectively. 10

F-DTN-M-DJWB 18 (Contd.)

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(ii) 7+7 qte 4, * 10 141;144 4. 9-Rfq9.*ffi- ctrwit., .1114 W*1.

taut..< it R.-9.* 4rxr graww 0.2 ppm 19)-(1ff TiKrq it 31.M4chcii t I ,vicieDJW1SiT4t33t 4 30% t 110

6. (T) (1) ErTO' them ONTO Mtn tiv4 thci (th-acrE)* trhrFEra- itf-4 tfractcg mir :11#7cE *f wftrmnr ifF97 I 5+5=10

(ii) trf-cw% 41-47 trr49' Wrff, wrdwur 31aTi9. WF r4e04 774r4 W-6" 9Tff a) Atcif t ? 4+6=10

(q.) (i) "F`4.1V 5*R * Trrif fikaii fqi & i mi aRI e er-47I 12

3frleTrT rift-4W 44-11 MT 4- WE itfirg I 8

(4) (i) i).) telz TEF *N7 91i7 ER 31

20

49"

cm ie

Fiff*a(UKTff t0'.71 T 3.15TWFR ar-47 aTAfil*elzfaT it f;14411 90 cm, 3.1141M7.49- *IT 'MT 4000 kg, stei '51' it WIT 4iird( arNi %TR *T 40% t; Iv

WITIt 3.0 cm c14i 3T 3PW4111, cicfri WeTT 37-49" alMTRuf ed-4ffWinT: 1000, 1500 P-TT 100 kg/cm2 t I 10

F-DTN-M-DJWB 19 (Contd.)

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(ii) Design the length and spacing of tie bars given the pavement thickness is 20 cm and the width of the road is 7.0 m with one longitudinal joint. The unit weight of concrete is 2400 kg/m3, the coefficient of friction is 1.5, allowable working tensile stress in steel is 1750 kgm/cm2, and the bond stress of deformed bars is 24.6 kg/cm2. 10

7. (a) (i) Explain egg shaped sewer section with their relative advantages with circular section. 5

(ii) Design a sewer for a newly developed town having population of 50,000. The sewer is to be designed for 3 times of dry weather flow when running full. Also find veloCity of flow. Available slope for the sewer to be laid is 1 in 700. Assume Manning's coefficient n = 0.01. 15

BOD . (b) (i) Explain significance of — rano. How

COD it helps in deciding type of treatment to be given to waste water. 5

(ii) A combined sewer system is serving 20,000 persons having BOD, 70 gm per capita and 50,000 litres industrial effluent per day having BOD 450 mg//. If average standard BOD of domestic sewage is 0.08 kg/day/person, find the population equivalent of sewage. 15

F-DTN-M-DJWB 20 (Contd.)

Page 21: CStMI EXAM2 0 11 - Civil Service Eligibility| Indian Civil Service … · 2014. 1. 24. · CStMI EXAM2 0 11 SI. No. F-DTN-M-DJWB CIVIL ENGINEERING Paper II Time Allowed : Three Hours

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F-DTN-M-DJWB 21 (Contd.)

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(c) (i) Explain working of skimming tanks for removing oil and grease. 5

(ii) What are stabilisation ponds ? Design an oxidation pond for treating sewage from a town having population of 15,000. Sewage contribution per capita per day is 120 / and BODs 200 mg//. The town is located in hot climate. 15

8. (a) (i) Write short notes on cant deficiency and negative superelevation in Railway track.

8 (ii) The rulling gradient has been fixed as 1

in 250 on a section of a B.G. track. What should be compensated gradient when 500 m radius horizontal curve is also to be introduced on a rulling gradient ? 8

(iii) Explain road camber and its necessity. Which road surface would need sleeper cross slope — concrete or bituminous ?

4 (b) (i) Explain the terms garbage and rubbish.

How these are different than ashes ? 5 (ii) Discuss composting for disposal of solid

wastes. Also explain methods adopted for composting in rural areas in India.

15 (c) (i) Discuss the status of monitoring and

control of air pollution in India. 10 (ii) What are the sources of particulate

matter in the environment ? Discuss the control of particulate matters in Industries. 10

F-DTN-M-DJWB 22

Page 23: CStMI EXAM2 0 11 - Civil Service Eligibility| Indian Civil Service … · 2014. 1. 24. · CStMI EXAM2 0 11 SI. No. F-DTN-M-DJWB CIVIL ENGINEERING Paper II Time Allowed : Three Hours

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F-DTN-M-DJWB 23

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F-DTN-M-DJWB

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Note : English version of the Instructions is printed on the front cover of this question paper