1. The live load for a sloping roof with slope 15°, where access is not provided to the roof,is taken asA 0.65 kN/rn2

B. 0.75 kN/ rn2

C. 1.35 kN/ rn2

D. 1.50 kN/ rn2

2. The batten plates used to connect the components of a built-up-column are designed to resistA Longitudinal shear onlyB. Transverse shear onlyC. Longitudinal shear and moment arising from transverse shearD. Vertical shear only

3.The duration of any activity in case of a PERT programme is calculated as a weighted average of three time estimates namely the optimistic time to , the pessimistic time tp and the most probable time tm which is given as

4. In ISMC 400 channels placed back to backat a spacing of 26 cm carry an axial load of160 tonnes. The lacing system should be designed to resist a transverse shear ofA 16 tonnesB. 12 tonnesC. 8 tonnesD. 4 tonnes

5. Consider the following statements of network:1. Only one time estimate is required for each activity.2. Three time estimates for each activity.3. Time and cost are both controlling factors.4. It is build-up of event-oriented diagram.Which of the above statements are correctly applicable to CPM network?A 1 and 3B. 1 and 2C. 2 and 4D 3 and 4

6. If a simply supported concrete beam, prestressed with a force of 2500 kN, is designed by load balancing concept for an effective span of 10 m and to carry a total load of 40 kN/m, the central dip of the cable profile should beA 100mmB. 200 mmC. 300mmD. 400 mm

7. A circular shaft which has a diameter of 100 mm is subjected to a torque of 5 kN-m. The shear stress, in N/mm2 , induced in the shaft would be

A160/ΠB.120/Π

C.125/ΠD.80/Π

8. Match List I with List II and select the correct answer using the code given below the lists:List I(Type)A. Single angle in roof trussesB. Double angles in roof trussesC. Single I section in columnsD. Double I section in columns

List II(RecommendedSlenderness ratio)1. 80 — 1502. 30—603. 100- 1804. 60 — 120

Codes

A B C DA 3 4 1 2B. 2 4 1 3C. 3 1 4 2D.2 1 4 39.

10. Consider the following statements relating to structural analysis1. Flexibility matrix and its transpose are equal.2. Elements of main diagonal of stiffness matrix are always positive.3. For unstable structures, coefficient in leading diagonal matrix can be negative.Which of the above statements is/are correct?A 1, 2 and 3B. 1 and 2 onlyC. 2 and 3 OnlyD. 3 only

11.

12. Poisson’s ratio is defined as the ratio ofA Longitudinal stress and longitudinal strainB. Lateral strain and longitudinal strainC. Longitudinal stress and lateral stressD. Lateral stress and longitudinal stress

13. Consider the following conditions with respect to plastic analysis :‘1. Sum of internal and external forces and moments must be equal to zero.2. At ultimate collapse load, the number of plastic hinges must be just enough to form a mechanism.Which of the above conditions is/are correct?A 1 onlyB. 2 onlyC. Neither 1 nor 2D. Both land2

14. The base plate of a roof truss is attached to the concrete pier with the help of 16 mm diameter mild steel anchor bolts of grade fy = 250 MPa. What is the maximum pull the base can be subjected to, if the root area of bolt = 0.75 times shank area ?A 30 kNB. 67.5 kNC. 90 kND. 120 kN

15. The maximum longitudinal pitch allowed inbolted joints of tension members isA 16 times the diameter of the boltB. 32 times the diameter of the boltC..16 times the thickness of the plateD. 32 times the thickness of the plate

16. A father notes that when his teenage daughter uses the telephone she takes no loss than 5 minutes for a call but sometimes as much as an hour. 15 minutes calls are more frequent than calls of any other duration. If the daughter’s calls were to be represented as an activity in PERT project, the expected duration of each phone call is?

A 89/6 minutesB. 101/6 minutesC.113/6 minutesD.125/6 minutes

17

18.A propped cantilever of span L is subjected to a concentrated load at mid span. If Mp, isthe plastic moment capacity of the beam, the value of collapse load will be

A. 12Mp/LB. 8Mp/LC 6Mp/LD. 4Mp/L

19. In PERT analysis, the time estimate ofactivities correspond toA Normal distributionB. Poisson’s distributionC.β distributionD. Binomial distribution

20. Consider the following statements:1. Shape factor2. Length of the beam3. Type of loading4. Yield strength of materialWhich of these affect the influence length ofplastic hinge in a beam?A. 1 only .B. 1 and 3C. 2 and 3D. 3 and 4

21

22. Consider the following statements:1. PERT is activity-oriented and adopts deterministic approach.2. CPM is event-oriented and adopts probabilistic approach.3. PERT is event-oriented and adopts probabilistic approach.Which of the above statements is/are correct?A 1 onlyB. 1 and 2C. 2 and 3D. 3 only

23

24.PERT calculator yield a project length of 60 weeks with a variance of 9 weeks. Probability factor, corresponding to 95% probability is 1.647; then the number of weeks required to complete, and project with a probability of 95% is,A 60.94B. 62.94C. 64.94D. 66.94

25. For an I-beam, the shape factor is 1.12; the factor of safety in bending stress is 1.5. If the allowable stress is increased by 20% for wind or ,earthquake loads, then the load factor isA 1.10B. 1.25C. 1.35D 1.40

26. A steel plate is 300 mm wide and 10 mm thick. A rivet of nominal diameter 18 mm is driven. The net sectional area of the plate isA 1800 mm2 .B. 2805 mm2

C. 2820 mm2

D 3242 mm2

27. At a section along the span of a welded plate girder, in which the web is spliced, the bending moment, at a section is M. The girder is comprised of top flange; web and bottom flange plates all of equal areas. The share of the bending moment taken by splice plates would beA MB. M/LC. M/7D M/13

28. Consider the following stipulations in designing a laced column1. Single lacing systems on opposite planes shall preferably be in the same direction so that one is the shadow of the other.2. Lacing bar should be a flat section.3. The slenderness ratio of the lacing bars for compression shall not exceed l80.4. Laced compression members are to be provided with tie plates at ends.Which of the above observations is/are correct?A 1 onlyB. 1 and 3C. 2 and 4,D. 1 and 4

29. At the location of a plastic hinge,A Radius of curvature is infiniteB. Curvature is infiniteC. Moment is infiniteD. Flexible stress is infinite

30

31. Consider the following statements:Entrainment of air in concrete is done so as to1. Increase the workability.2. Increase the strength.3. Increase the resistance to freezing and thawingWhich of the above statements is/are correct?A. 1, 2 and 3B. 1 onlyC. 1 and 3 onlyD. 3 only

32. Consider the following statements is work breakdown structure1. It is a graphical representation of entire programme.2. The Top-Down approach to planning is adopted.3. The Down-Top approach to planning is adopted.4. It is suitable for complex projects.Which of the above statements is/are correct?A. 1 onlyB. 2 and 4C. 3 and 4D. 4 only

33. If P is the percentage of water required for determination of normal consistency of cement, then percentage of water to be added for determination of initial setting time isA. 0.70PB. 0.75 PC. Q.80 PD. 0.85 P

34. Consider the following statements regarding the. slope of cost-time curve:1. It is given by difference between normal cost and crash cost divided by crash time.2. It is given by difference between crash cost and normal cost divided by difference between crash time and normal time.3. It is given by difference of crash cost and normal cost divided by normal time.4. It is given by ‘crash cost not divided by crash time.

Which of the above statements is/are correct?A. 1 onlyB.2 and 3C. 2 onlyD. 3 and 4

35. Consider the following statements:1. The crushing strength of concrete is fully governed by water-cement ratio.2. Vibration has no effect on strength of concrete at high water-cement ratios.3. Workability of concrete is affected by improper grading of aggregates.Which of the above statements.is/are correct?A. 1,2 and 3B. 2 and 3 onlyC. 2 onlyD.3 only

36. The load carrying capacity of a column designed by working stress method is500 kN. The ultimate collapse load of the column isA 500 kNB. 662.5 kNC, 750kND.1100 kN

37. Consider the following statements:1. Strength of concrete cube is inversely proportional to water-cement ratio.2. A rich concrete mix gives a higher. strength than a lean concrete mix since it has more cement content.3. Shrinkage cracks on concrete surface are due to excess water in mix.Which of the above statements is/are correct?A 1, 2 and 3B. 1 and 2 onlyC. 2 onlyD. 2 and 3 only

38. A beam of symmetrical. I-section, made of structural steel has an overall depth. of 300 mm. If the flange stresses developed at the top and bottom of the beam are 1200 kg/cm2 . and 300 kg/cm2 . respectively, then the depth of neutral axis from the top of the beam would beA 250mmB.240mmC. 200 mmD. 180 mm

39. Consider . the following statements:Admixtures are added to concrete to1. Increase its strength.2. Reduce heat of hydration.3. Delay the setting of cement.4. Reduce water-cement ratio.Which of the above statements is/are correct?A 1 onlyB. 1 and 2C. 2 and 3D. 3 and 4.

40. A building contractor discovers from his record that in the last 200 slab castings his mixer machine broke down 21 times. During each breakdown, he had to pay on an average about Rs. 2,500 for idle labour. A standby mixer machine, if hired on the day of slab casting, would cost him Rs. 200 per day. The expected loss is more than the mitigation expense of hiring the mixer by

A Rs. 151.50B. Rs. 241.50C. Rs. 262.50D. Rs. 283.50

41. A steel beam is replaced by a corresponding aluminium beam of same cross-sectional shape and dimensions, and is subjected to same loading. The maximum bending. stress willA Be unalteredB. IncreaseC. DecreaseD.Vary in proportion to their modulus of elasticity

42

The distribution factors for members AE and AC of the box section areA 0.5 and 0.5B. 0.6 and 0.4C. 0.25 and 0.75D. 1 and zero

43

44.Consider the following activities:1. Pouring of concrete2. Erection of formwork3. Curing of concrete4. Removal of formworkWhat is the correct sequence on a network of these activities?A 1—2—3—4B.2— 1—4—3C.2—1—3 —4D.1—3—2—4

45. Which one of the following is relevant to Activity on Node (AON)?A. Dummy activities may be manyB. There will be no dummy activitiesC. It is used for quite complex projectD. It is easier to associate with time flow of activities

46. Consider the following statements about theair entraining admixture in concrete:1. Improve workability2. Improve durability3. Reduce segregation during placing4. Decrease concrete densityWhich of the above statements are correct?A. 1,2,3and4B. 1 and 2onlyC. 2 and 3 onlyD. 3 and 4 only.

47.

The RC slab, simply supported on all edges as in above figure, is subjected to a total UDL of 12 kN/m2. The maximum shear force! unit length along the edge ‘BC’ isA 16kNB. 12kNC. 8kND. 30kN

48.

The above figure indicates a project network; the number at each activity represents its normal duration in days. The critical path is alongA 1—2—3—6—7— 8B. 1—2 —4—5—7 — 8

C. l—2——5—7— 8D. 1—2—4—6—7 — 8

49.

50

In the above network, the duration of activities are written along their arrows. The critical path of the activities is alongA 1—2—3—5—7—8B. 1—2—3—6—7—8 .C. 1—2—4—5—7—8D. 1—2—3—4—5—7—8

Answers:

1 A

2 C

3 B

4 D

5 A

6 B

7 D

8 B

9 D

10 B

11 A

12 B

13 D

14 A

15 C

16 D

17 B

18 C

19 C

20 B

21 A

22 D

23 D

24 C

25 D

26 B

27 C

28 D

29 B

30 D

31 C

32 B

33 D

34 C

35 B

36 C

37 A

38 B

39 B

40 #

41 A

42 A

43 D

44 C

45 B

46 A

47 A

48 B

49 C

50 A

1. The head on a sharp-crested rectangular weir of height 1.6 m and crest length 1.2 m was incorrectly observed to be0.13 m when it was actually 0.15 m. What was the percentage error in the computed value of flow rate?(a) 0.5%(b) 1.0%(c) 2.0%(d) 1.5%Ans. (c)

2. Consider the following with respect to ‘measurement of stream flow during flood:l. Timing of the travel of floats released in the stream2. Use of weir formula, for spillways provided on a dam3. Calculation of flow through a contracted opening at a bridge4. Using a current meterWhich of the above is/are reliable and accurate?

(a) 1(b) 4 only(c) 3 and 4(d) 2 and 3Ans. (b)

3. What is the most important design parameter used in designing a continuous flow rectangular sedimentation tank for removal of discrete particles?(a) Length of the tank(b) Surface overflow rate(c) Depth of the tank(D) Temperature of the water to be treatedAns. (b)

4. Effluent from a wastewater treatment plant (flow rate = 8640 m3/d, temperature = 25° C) is discharged to a surface stream (flow rate = 1.2 m3/s, temperature = 15° C). What is the temperature of the stream after mixing?(a) 10°C(b) 15.77° C(c) 20° C(d) 24.99° CAns. (b)

5.. Match List-I with List-II and select the correct answer using the code given below the Lists:List-I List-II(Type of impurity) (Harm caused)A. Excess of nitrates 1. Brackish waterB. Excess of fluorides 2. GoiterC. Lack of iodides 3. Fragile bonesD. Excess of chlorides 4. . Blue babiesCode:A B C D(a) 4 2 3 1(b) 1 2 3 4(c) 4 3 2 1(d) 1 3 2 4Ans. (c)

6. The concentration of OH- ion in a water sample is measured as 17 mg/L at 25° C. What is the pH of the water sample?(a) 10(b) 11(c) 12(d) 13Ans. (d)

7. Which one of the following types of samples is relevantly employed for the design of wastewater treatment plant?(a) Grab sample(b) Composite sample(c) Integrated sample(d) Any sampleAns. (a)

8. A drain carrying sewage of BOD = 200 mg/L and flow rate of 50 m3/s joins a river whose upstream BOD is 8 mg/L and flow rate is 500 m3/s. Assume immediate and complete mixing of drain with the river. What is the estimated downstream BOD of the river flow?(a) 20.4 mg/L(b) 25.4 mg/L(c) 104.4 mg/L(d) 70.4 mg/LAns. (b)

9. A 12.5 mL sample of treated wastewater requires 187.5 mL of odor-free distilled water to reduce the odor to a level that is justperceptible. What is the threshold odor number (TON) for the wastewater sample?(a) 0.07(b) 1.07(c) 15(d) 16.Ans. (d)

10. Which one of the following parameters is not included in the routine characterization of, solid waste for its physical composition?(a) Moisture content(b) Density(c) Particle size analysis(d) Energy valueAns. (d)

11. Which one of the following processes of water softening requires recarbonation?(a) Lime-soda ash process(b) Hydrogen-cation exchanger process(c) Sodium-cation exchanger process(d) DemineralizationAns. (a)

12. Math List-I with List-II and select the correct answer using the code given below the Lists:List-I List-II(Water/Wastewater treatment) (Operating problem)A. Trickling filter 1. Negative headB. Activated sludge process 2. Fly-breeding

C. Rapid gravity filter 3. Sludge bulkingD. Anaerobic sludge digester 4. pH reductionCode:A B C D(a) 4 3 1 2(b) 2 3 1 4(c) 4 1 3 2(d) 2 1 3 4Ans. (b)

13. Consider the following treatment process units in a water treatment plant:1. Coagulation2. Disinfection3. Sedimentation4. FiltrationWhich is the correct sequence of the process units in the water treatment plant?(a) 2-4-3-1(b) 1-4-3-2(c) 2-3-4-1(d) 1-3-4-2Ans. (d)

14. Which one of the following tests of water/ wastewater employs Erichrome Black T as indicator?(a) Hardness.(b) COD(c) Residual chlorine(d) DOAns. (a)

15. Which of the following pollutants are generally not removed in a sewage treatment plant?(a) Inorganic suspended solids(b) Dissolved organic solids(c) Oil and grease(d) Dissolved inorganic, solidsAns. (b)

16. A clay sample, originally 26 mm thick at a void ratio of 1.22, was subjected to a compressive load. After the clay samplewas completely consolidated, its thickness was measured to be 24 mm. What is the final void ratio?(a) 1.322(b) 1.421(c) 1.311(d) 1.050Ans. (d)

17. For a sandy soil with soil grains spherical in shape and uniform in size, what is the theoretical void ratio?(a) 0.61(b) 0.71(c) 0.91(d) 0.81Ans. (c)

18. A soil has liquid limit = 35, plastic limit = 20, shrinkage limit = 10 and natural moisture content = 25%. What will be its liquidity index, plasticity index and shrinkage index?(a) 0.67, 15 and 25(b) 0.33, 15 and 10(c) 0.67, 25 and 15(d) 0.33, 20 and 15Ans. (b)

19. A cohesive soil yields a maximum dry density of 16 kN/m3 during a standard Proctor Compaction test. If the specific gravity is 2.65, what would be its void ratio?(a) 0.552(b) 0.624(c) 0.712(d) 0.583Ans. (b)

20. Consider the following:1. Increase in shear strength and bearing capacity2. Increase in slope stability3. Decrease in settlement of soil4. Decrease in permeabilityWhich of the above with respect to compaction of soil is/are correct?(a) 1 only(b) 1 and 2 only(c) 2 and 3 only(d) 1, 2, 3 and 4Ans. (d)

21. Which one of the following toxic gases has physiological action as asphyxiant?(a) SO2(b) NO2(c) Cl2(d) COAns. (a)

22. Assuming annual travel for each vehicle to be 20000 km, what is the quantity of NOx produced from 50000 vehicles with emission rate of 2.0 g/km/vehicle?(a) 1800 tonnes

(b) 1900 tonnes(c) 2000 tonnes(d) 2100 tonnesAns. (c)

23. What are the air pollutants responsible for acid rain within and downwind areas of major industrial emissions?(a) Hydrogen sulfide and oxides of nitrogen(b) Sulfure dioxide and oxides of nitrogen(c) Carbon dioxide and hydrogen sulfide(d) methane and hydrogen sulfideAns. (b)

24. Consider the following air pollutants:1. NOx2. PAN3. CO24. COWhich of the above air pollutants is/are present in an auto exhaust gas?(a) 1 only(b) 1 and 2(c) 2 and 3(d) 1, 3 and 4Ans. (d)

25. Which one of the following conditions is valid in case of unconfined compression test in comparison to triaxial test?(a) Minor principal stress = 0(b) Minor principal stress = 0.5 × major principal stress(c) Minor principal stress = major principal stress(d) Major principal stress = 3 × minor principal stressAns. (a)