Structural Design Online Test – Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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1 / 30

1. The maximum bulking of sand generally occurs at a percentage moisture content of

a) 5

b) 8

c) 11

d) 4

2 / 30

2. The minimum cover at the end of reinforcement should be

a) 20 Φ

b) 25 mm

c) mini. of (a) and (b) above

d) max. of (a) and (b) above

3 / 30

3. In a slab, the pitch of the distribution reinforcement should not exceed its effective depth

a) three times

b) four times

c) five times

d) six times

4 / 30

4. The maximum strain in the tension reinforcement in the section of a flexural member at failure shall not be less than (if fy is the characteristic strength of steel and Es is the modulus of elasticity of steel)

a) 0.0020

b) fy/(1.15Es) + 0.002

c) fy/(1.15Es) + 0.003

d) 0.0300

5 / 30

5. The ratio of diameter of reinforcing bars and the slab thickness is

a) 1/5

b) 1/6

c) 1/7

d) 1/8

6 / 30

6. As per IS: 456, the column is considered as a short column if its slenderness ratio is more than

a) 10

b) 15

c) 18

d) 24

7 / 30

7. The amount of reinforcement for main bars in a slab is based on

a) minimum shear force

b) maximum shear force

c) minimum bending moment

d) maximum bending moment

8 / 30

8. The maximum spacing between longitudinal bars in a column is

a) 200 mm

b) 300 mm

c) 400 mm

d) 500 mm

9 / 30

9. An RCC roof slab is designed as a two-way slab if

a) it supports live load in both directions

b) the ratio of spans in both directions is less than two

c) the slab is continuous over two supports

d) the slab is discontinuous at edges

10 / 30

10. The states of concrete are

a) elastic and hardened state

b) elastic and plastic state

c) plastic and hardened state

d) none of the above

11 / 30

11. Minimum spacing between horizontal parallel reinforcements of the same size should not be less than

a) one diameter

b) two diameters

c) three diameters

d) four diameters

12 / 30

12. Factor of safety is given by

a) ultimate load /working load

b) working load / ultimate load

c) (w+u)load

d) (u-w)load

13 / 30

13. Strength of concrete show an increase with

a) decrease in rate of loading

b) increase in rate of loading

c) unaffected by rate of loading

d) depends on the application of load

14 / 30

14. The neutral axis of a T-beam exists

a) within the flange

b) at the bottom edge of the slab

c) below the slab

d) all of the above

15 / 30

15. If A is the fineness modulus of coarse aggregate, B of combined aggregates, and C of fine aggregates, then P the proportion of fine to combined aggregates, is given by

a) P = (A-B/B-C)x100

b) P = (A-B/C-B)x100

c) P = (C-B/A-B)x100

d) P = (B-C/A-B)x100

16 / 30

16. In a singly reinforced beam, if the concrete is stressed to its allowable limit earlier than steel, the section is said to be

a) over-reinforced section

b) under-reinforced section

c) balanced section

d) economical section

17 / 30

17. The lower water-cement ratio in concrete products

a) more density

b) small creep and shrinkage

c) more bond

d) all of the above

18 / 30

18. Poisson's ratio for concrete

a) increases with a richer mix

b) decreases with a richer mix

c) remains constant

d) increases with a poor mix

19 / 30

19. The types of failure in which stress in concrete and steel reaches its permissible value at a time is called balance failure. At this stage, the location of the neutral axis is

a) above the critical neutral axis

b) matches with the critical neutral axis

c) below the critical neutral axis

d) all of the above

20 / 30

20. The safe bond stress between concrete and steel is determined by

a) tensile test

b) compressive test

c) shear test

d) pull-out test

21 / 30

21. By over-reinforcing a beam, the moment of resistance can be increased not more than

a) 10%

b) 15%

c) 20%

d) 25%

22 / 30

22. The transverse shear reinforcement in RCC beams can be provided as

a) ties

b) closed loops only

c) open or closed loops

d) helical loops

23 / 30

23. The slenderness ratio of an RCC column is given by (Where, r=radius of gyration, l=effective length, B=width, D=diameter)

a) l/r

b) l/B

c) l/D

d) none of the above

24 / 30

24. If a beam fails in bond, then

a) increase the depth of the beam

b) use thicker but fewer numbers of bars

c) use thinner but more numbers of bars

d) providing vertical stirrups

25 / 30

25. The maximum reinforcement in a column to consider the practical problem is

a) 4%

b) 5%

c) 6%

d) 8%

26 / 30

26. Fineness modulus of fine aggregate is between

a) 2-3.5

b) 3.5-5.0

c) 5-6.0

d) 6-7.0

27 / 30

27. The advantage of reinforced concrete is due to

a) monolithic character

b) economy because less maintenance cost

c) molding in any desired shape

d) all of the above

28 / 30

28. Presence of oils in water for concreting

a) improves strength

b) gives more slump

c) reduces workability

d) reduces strength

29 / 30

29. The lap length of a direct tension reinforcement bar in an RCC beam should be more than

a) 30 times the diameter of the bar

b) 48 times the diameter of the bar

c) 24 times the diameter of the bar

d) twice the development length or 30 times the diameter of the bar

30 / 30

30. Shear stress diagram of a homogeneous beam is

a) rectangular

b) triangular

c) parabolic

d) elliptical

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Structural Design Online Test – Paper 2

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