Q1. As per IS 269 – 1975 , The initial setting time of OPC is

(a) 1/3 hour(b) ½ hour(c) 10 hour(d) 3 hour

Q2. Gypsum is added to cement

(a) Increase its initial setting(b) decrease its initial setting(c) Increase its compressive strength(d) At time for increasing bound

Q3. Vicat’s apparatus is used to determine

(a) Initial setting(b) Final setting(c) Standard consistency(d) All of the above

Q4. Separation of water on the fresh concrete is called

(a) Segregation(b) Bleeding(c) Hydration (d) Seepage

Q5. The residue left on IS No 9 (90 μ) of rapid hardening

(a) 10%(b) 5%(c) 30%(d) 15%

Q6. For R.C.C works on water retaining structures, the grade of concrete mix is used generally

(a) 1 : 1.5 : 3(b) 1 : 3 : 6(c) 1 : 3 : 8(d) 1: 4 : 8

Q7. One metre of 10 mm diameter mild steel rod will weigh appx

(a) 0.2 – 0.25 kg(b) 0.3 to 0.35 kg

(c) 1 kg(d) 0.6 to 0.65 kg

Q8. The ratio of young‘s modulus of elasticity of steel to concrete is called

(a) Specific ratio(b) Modular ratio(c) Poission ratio(d) σ

Q9.The volume of 1 bag of cement is approximately

(a) 32 litre(b) 34.5 litre(c) 40 litre(d) 50 litre

Q10. A cement bag contain 0.035m3 of cement by volume . How many bags will one tone of cement comprise

(a) 16(b) 17(c) 18(d) 20

Q11. What is the ratio of flexural strength ( fcr ) to characteristic comp. strength (fck ) for M25

(a) 0.08(b) 0.11(c) 0.14(d) 0.17

Q12. Which of the following tests compare the dynamic modulus of elasticity of sample of concrete

(a) Compression test(b) Ultrasonic pulse velocity(c) Split test(d) Tension test

Q13. The proper size of mould for testing compressive strength of cement is

(a) 7.05cm cube(b) 10.05 cm cube(c) 15 cm cube(d) 12.5 cm

Q14. The specific gravity of commonly available OPC is

(a) 4.92(b) 3.15(c) 2.05(d) 1.83

Q15.For marine works, the best suited cement is

(a) Low heat cement (b) Rapid hardening cement(c) OPC(d) Blast furnace slag

Q16. An example of accelerator in cement concrete is

(a) Cacl2

(b) CaSo4

(c) Na2So4

(d) Nacl

Q17. As per IS 456 , in absence of test data , the appx value of total strain for design may be takes as

(a) 0.002(b) 0.003(c) 0.004(d) 0.001

Q18. Min dia of longitudinal bar in R.C.C column should be

(a) 8 mm(b) 12 mm(c) 16 mm(d) 6 mm

Q19.The permanent deformation of concrete with time under steady loads is called

(a) Creep(b) Relaxation(c) Visco-elasticity (d) Vicidity

Q20. Which of the following has least carbon content

(a) Mild steel(b) Pig steel

(c) Wrought (d) Cast iron

Q21.In singly reinforced beam , if stress in concrete reaches its allowable limit earlier than steel reaches its permissible value , the beam section is

(a) Over-reinforced section(b) Economic section (c) Critical section(d) Under- reinforced section

Q22. Factor of safety is the ratio of

(a) Tensile stress and working stress(b) Compressive stress and working stress(c) Bearing stress and working stress(d) Yield stress and working stress

Q23. In limit state design , for bars in compression, the value of bond stress shall be

(a) Decreased by 20%(b) Increased by 20%(c) Decreased by 25%(d) Increased by 20%

Q24. The increase in strength of concrete with time is

(a) Linear(b) Non-linear(c) Asymptotic(d) All of the above

Q25. The minimum % of steel in R.C.C slab using

(a) 0.15%(b) 0.3%(c) 0.35%(d) 0.12%

Q26. An aggregate is called cyclopean aggregate , if its size is more than

(a) 30 mm(b) 60 mm(c) 75 mm(d) 4.75 mm

Q27. Spacing of stirrups in rectangular beam is

(a) Decreased towards the centre of beam(b) increased at the centre of beam(c) increased at ends(d) Kept constant throughout the length

Q28. Admixtures which cause early setting and hardening of concrete is called

(a) Accelerator(b) Air entraining agents(c) Retarders(d) Workability admixtures

Q29. Most important constituents of cement are

(a) C3S & C2S(b) C3A & C4AF(c) C3A & C2S(d) C3S & C2A

Q30. To construct a massive dam , the type of cement used

(a) Rapid hardening cement(b) Ordinary Portland cement(c) Blast furnace slag cement(d) Low heat cement

Q31. The amount of water used in performing setting time test of cement is (assuming P = Standard consistency )

(a) 0.60 P(b) 0.65 P(c) 0.8 P(d) 0.85 P

Q32. Buckling load for an axially loaded column with both ends fixed is given by

(a) π2 EI/L2

(b) 2π 2 EI/L2

(c) 4 π 2 EI/L2

(d) π2 EI/4L2

Q33. If modular ratio ‘m’ the stress ratio in steel and concrete is ‘r’ , then critical neutral axis constant ‘k’ is

(a) m / (m-r)(b) m / (m+r)(c) (m+r) / m(d) m2 /r

Q34. If σs = stress in bar and τbd = bond stress then the development length of diameter Ø is given by

(a) 4 Ø σs / τbd

(b) Ø σs / 4τbd

(c) 2 Ø σs / 3τbd

(d) Ø σs / 3τbd

Q35. Hooke’s law is valid upto

(a) Limit of proportionality (b) Ultimate point(c) Elastic limit(d) Yield point

Q36. The bottom diameter top diameter and the height of steel mould used for slump test are respectively

(a) 20 , 30 and 10 cm(b) 10 , 30 and 20 cm(c) 20 , 10 and 30 cm(d) 10 , 20 and 30 cm

Q38. The partial factor of safety for concrete and steel are

(a) 1.15 and 1.5 (b) 1.5 and 1.15(c) 1.15 and 2(d) 1.95 and 1.5

Q39. If a nominal mix prepared for M10 gives a testing strength of 17.5 Mpa , then mix may be regarded as

(a) M15(b) M20(c) M10(d) None of these

Q40. Ratio of diameter of reinforcing bars and slab thickness is

(a) 1/4(b) 1/5

(c) 1/6(d) 1/8

Q41. As per IS-456 , short term Ec for M25 can be assumed as

(a) 25000(b) 28500(c) 30000(d) 36000

Q42. As per IS:456 , side face reinforcement not less than 0.05% of web area is provided on each side when the depth of web is not less than

(a) 300 mm(b) 400 mm(c) 500 mm(d) 750 mm

Q43. Minimum clear cover (in mm) to the main steel bars in slab , beam and column and footings respectively are

(a) 10 , 15 , 20 , 25(b) 15 , 25 , 40 , 75(c) 20 , 25 , 30 ,40(d) 20 , 35 , 40 ,75

Q44. The permissible stress in direct compression of M250 grade of concrete is

(a) 20 kg/cm2

(b) 60 kg/cm2

(c) 100 kg/cm2

(d) 180 kg/cm2

Q45. In limit state design of concrete for flexure , the area of stress block is taken

(a) 0.530 fck Xu

(b) 0.446 fck Xu

(c) 0.420 fck Xu

(d) 0.360 fck Xu

Q46. The ratio ,width of rib to depth of rib , for T-beam is

(a) 1/4 to 1/3(b) 1/3 to 2/3(c) 1/2 to 3/4(d) 2/3 to 7/8

Q47. What shall be max. area of reinforcement in compression and tension to be provided in an R.C beam respectively as IS

(a) 0.08 and 2%(b) 2% and 4%(c) 4% and 2%(d) 4% and 4%

Q48.

List 1 List 2

A. IS 875 1. Earthquake resistant design

B. IS 1343 2. loads

C. IS 1893 3. Liquid storage

D. IS 3370 4. Pre-stressed concrete

Codes

A B C D

(a) 3 1 4 2

(b) 2 1 4 3

(c) 3 4 1 2

(d) 2 4 1 3

Q49. What is the anchorage value of a standard hook of a reinforcement bar of diameter ‘D’

(a) 4D(b) 8D(c) 12D(d) 16D

Q50.Using stiffness of a simply supported beam is satisfied , if ratio of it span to depth doesn’t exceed which one of the following ?

(a) 7(b) 10(c) 20(d) 26

Q51. What is minimum nominal % longitudinal reinforcement to be provided in concrete pedestal as per IS code ?

(a) 0.4(b) 0.2(c) 0.15(d) 0.1

Q52. The max strain in the tension reinforcement in the section at failure when designed for limit state of collapse should be

(a) > ( fy /1.15Es + 0.002)(b) < ( fy /1.15Es + 0.002)(c) Exactly equal to ( fy /1.15Es + 0.002)(d) < 0.002

Q53. An axially loaded column is 300 x 300 mm size . Effective length of column is 3m . what is the min. eccentricity of axial loaded column?

(a) 0(b) 10 mm(c) 16 mm(d) 20 mm

Q54. Which one of the following sections performs better on ductility criteria ?

(a) Balanced section (b) Over-reinforced section (c) Under reinforced (d) Non- prismatic section

Q55. What is effective height of a free standing masonry wall of purpose of computing λ ?

(a) 0.5 L(b) 1 L(c) 2 L(d) 2.5 L

Q56. A square column section of size 350 mm x 350 mm is reinforced with 4 bars of 25 mm Ø and 4 bars of 16 mm Ø . The transverse steel should be

(a) 5 mm Ø @ 240 mm c/c(b) 6 mm Ø @ 250 mm c/c(c) 8 mm Ø @ 250 mm c/c(d) 8 mm Ø @ 350 mm c/c

Q57. Shrinkage in a concrete slab

(a) Causes shear cracks(b) Causes tension cracks(c) Causes compression cracks(d) Doesn’t cause any crack

Q58.

List 1 List 2

A. Vu/bd 1. Modulus of rupture

B. 0.7√ fck 2. Development length

C. 5000√ fck 3. Nominal shear stress

D. Ø fs / 4τbd 4. Hook anchorage value

5. Modulus of concrete

Codes

A B C D

(a) 3 1 5 2

(b) 2 1 4 3

(c) 3 5 1 4

(d) 2 4 1 3

Q59. Minimum period of striping formwork for vertical formwork to column , wall , beams

(a) 16 hr(b) 3 days(c) 12 hr(d) 14 hr

Q60. Basic span to effective depth ratios for span upto 10 m is given by for continous and cantilever as

(a) 7 and 20(b) 20 and 26(c) 7 and 26(d) 26 and 7