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 ultimate bending compressive strain in RCC is

a) 0.003

b) 0.0035

c) 0.0003

d) none of the above

2 / 30

2. 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

3 / 30

3. The effective span of a simply supported slab is

a) clear span plus the effective depth of the slab

b) span between outer faces of two walls

c) distance between the center of bearing

d) none of the above

4 / 30

4. The ratio of ultimate strength to working stress is

a) distribution factor

b) load factor

c) safety factor

d) shape factor

5 / 30

5. In the analysis of a doubly reinforced beam, the assumption made is

a) tension is resisted by concrete only

b) compression is resisted by concrete only

c) the deformations in concrete and steel on both sides remain proportional to their distance from the neutral axis

d) all of the above

6 / 30

6. In R.C.C. beams, the tension reinforcement can be cut off at a point when it is no longer needed if

a) enough bond length is available

b) shear at the cut-off point does not exceed two-thirds of permissible at that section

c) bending moment is zero

d) none of the above

7 / 30

7. Buckling occurs in a column

a) great

b) short

c) too great

d) none of the above

8 / 30

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

a) 1/5

b) 1/6

c) 1/7

d) 1/8

9 / 30

9. In R.B. slab, the permissible compressive stress in bricks is generally taken as

a) 10 kg/cm²

b) 20 kg/cm²

c) 30 kg/cm²

d) 40 kg/cm²

10 / 30

10. A rigid frame is a structure composed of members which are connected by

a) a single rivet

b) rigid joints

c) simple bearing

d) none of the above

11 / 30

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

a) 5

b) 8

c) 11

d) 4

12 / 30

12. In cold weather, concrete curing should be continued for... days

a) 7

b) 14

c) 21

d) 28

13 / 30

13. The strength of concrete is directly proportional to

a) cement water ratio

b) water cement ratio

c) sand cement ratio

d) water aggregate ratio

14 / 30

14. A diagonal crack is introduced in a beam due to

a) bending moment (BM)

b) shear force (SF)

c) bending moment & shear force (BM & SF)

d) none of the above

15 / 30

15. For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of the bar nor less than

a) 15 mm

b) 20 mm

c) 25 mm

d) 40 mm

16 / 30

16. A circular slab, when subjected to external loading, deforms to assume a shape of

a) hemi-sphere

b) ellipsoid

c) semi-hemisphere

d) paraboloid

17 / 30

17. For a continuous slab of 3m x 3.5m size, the minimum overall depth of the slab to satisfy vertical deflection limit is

a) 5cm

b) 7.5cm

c) 9cm

d) 12cm

18 / 30

18. If the corners of a two-way slab are held down firmly

a) buckling takes place

b) deflection at the center increases

c) cracks develop near the corners

d) all of the above

19 / 30

19. The moment of resistance of an under-reinforced section is computed on the basis of

a) compressive force developed in concrete

b) tensile force developed in steel

c) both of the above

d) none of the above

20 / 30

20. The unit weight of RCC is taken as

a) 2.2 t/m³

b) 2.3 t/m³

c) 2.4 t/m³

d) 2.5 t/m³

21 / 30

21. If the effective length of a 32 cm diameter column is 4.40 mts slenderness ratio is

a) 45

b) 50

c) 55

d) 60

22 / 30

22. A simply supported beam shall be deemed to be a deep beam if the ratio of effective span to overall depth is

a) 2

b) 2.5

c) 3

d) 3.5

23 / 30

23. The minimum number of main bars in a circular column is

a) 4

b) 6

c) 8

d) 12

24 / 30

24. The designed main bars are placed in a two-way slab

a) along the short span

b) along the long span

c) perpendicular to the length of the slab

d) all of the above

25 / 30

25. The minimum cover to the main bars in an RCC beam should be

a) 15mm or diameter of the bar

b) 25mm or diameter of the bar

c) 25mm size of the aggregate

d) 40 mm or diameter of the bar

26 / 30

26. Surface vibrator is effective only when the thickness of concrete does not exceed

a) 5 cm

b) 70 cm

c) 15 cm

d) 20 cm

27 / 30

27. In a doubly reinforced beam, the maximum shear stress occurs

a) along the centroid

b) along the natural axis

c) on planes between the neutral axis and the tensile reinforcement

d) on planes between the neutral axis and the compressive reinforcement

28 / 30

28. The ratio of effective length of a column which is fixed at both ends to the distance between the supports is about

a) 2.0

b) 1.0

c) 0.7

d) 0.50

29 / 30

29. High increase in temperature......the strength of concrete.

a) increases

b) has no effect

c) decreases

d) none of the above

30 / 30

30. The effective width of a column strip of a flat slab is

a) one-fourth the width of the panel

b) half the width of the panel

c) radius of the column

d) diameter of the column

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Structural Design Online Test – Paper 2

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