Advanced Design of Structures previous year solved MCQs ( As per New Syllabus)

UNIT-1: Design of connections in steel structures

1. The diameter of a rivet hole is made larger than the diameter of the rivet by 2mm for rivet diameters :

a. Up to 12mm

b. Up to 22mm

c. Up to 15mm

d. Exceeding 25mm

2. When it is desired to have a flush surface,..... rivets are used :

a. Snap headed

b. Pan headed

c. Countersunk

d. none of the above

c. Countersunk

3. The type of riveting in which number of rivets in a row decreases as we move from innermost row to the outermost row is called :

a. Diamond riveting

b. Chain riveting

c. Cross riveting

d. Gauge riveting

a. Diamond riveting

4. When the minimum size of fillet weld is greater than the thickness of thinner part, the minimum size of weld should be kept equal to :

a. Twice the thickness of thinner part

b. Thickness of the thinner part

c. Half of the thickness of thinner part

d. none of the above

b. Thickness of the thinner part

5. The effective area of butt weld is the product of :

a. Throat thickness and length of weld

b. Throat thickness and effective length of weld

c. Effective throat thickness and length of weld

d. Effective throat thickness and effective length of weld

6. What is the permissible axial tensile stress for the grade of steel having f_y = 250N/m²?

a. 150N/m²

b. 175N/m²

c. 200N/m²

d. 225N/m²

a. 150N/m²

7. The spacing between two tacking rivets for compression member should not exceed :

a. 400 mm

b. 500 mm

c. 600 mm

d. 700 mm

c. 600 mm

8. For field rivets, the permissible stresses are reduced by :

a. 5%

b. 10%

c. 15%

d. 20%

b. 10%

9. The rivets which are driven at atmospheric temperature are known as :

a. Power driven shop rivets

b. Hand driven rivets

c. Power driven field rivets

d. Cold driven rivets

10. Diameter of rivet hole should be greater than the nominal diameter of a rivet by about :

a. 4 to 5 mm

b. 2.5 to 4 mm

c. 1.5 to 2 mm

d. 0 to 1.5 mm

c. 1.5 to 2 mm

11. Efficiency of a riveted joint is defined as the ratio of :

a. Load to rivet value

b. Strength of solid plate to strength of joint

c. Strength of a riveted joint to strength of solid plate

d. All of the above

c. Strength of a riveted joint to strength of solid plate

12. Hot driven rivets are :

a. Hand driven rivets

b. Power driven shop rivets

c. Power driven field rivets

d. All of the above

13. The metal added at the joint while welding is known as :

a. Filler

b. Fillet metal

c. weld metal

d. All of the above

a. Filler

14. Effective length of fillet weld is taken as (L= actual length of fillet weld, S=size of weld) :

a. L - 2S

b. L - 4S

c. 0.8L

d. 0.7L

a. L - 2S

15. The effective throat thickness in mm of a 6 mm size fillet weld with a angle of 75° between the fusion faces is :

a. 3.6 mm

b. 4.0 mm

c. 4.2 mm

d. 4.5 mm

c. 4.2 mm

16. In a structural connection, if the member is subjected to compression then maximum pitch of the joint should be least of 200mm or :

a. 12t

b. 16t

c. 32t

d. 16d

a. 12t

17. The grip length of a rivet should be more than.... the diameter of the rivet :

a. Two times

b. Three times

c. Four times

d. Five times

c. Four times

18. ..... is measured at right angles to the direction of the force.

a. Edge distance

b. Gauge distance

c. Pitch

d. None of the above

b. Gauge distance

19. The size of the rivet is expressed by the :

a. Diameter of shank

b. Type of head

c. Length of shank

d. None of the above

a. Diameter of shank

20. The welding process in which pressure is used to weld metal parts is known as :

a. Fusion welding

b. Forge welding

c. Arc welding

d. Gas welding

b. Forge welding

21. The diameter of cold driven rivets ranges from :

a. 12 to 22 mm

b. 22 to 32 mm

c. 32 to 42 mm

d. 6 to 12 mm

a. 12 to 22 mm

22. The overlapping of members in a lap joint should not be less than :

a. Two times the thickness of thinner member

b. Three times the thickness of thinner member

c. Four times the thickness of thinner member

d. Five times the thickness of thinner member

23. For power driven shop rivets, the permissible bearing stress is :

a. 200 N/mm²

b. 250 N/mm²

c. 300 N/mm²

d. 350 N/N/mm²

c. 300 N/mm²

24. Which of the following types of riveted joint is free from bending stresses ?

a. Lap joint

b. Butt joint with single cover plate

c. Butt joint with double cover plates

d. None of the above

c. Butt joint with double cover plates

25. Junction between the flange and web of a beam is known as :

a. Lap joint

b. Butt joint

c. Fillet

d. Shear joint

c. Fillet

26. The strength of rivetted lap joint is equal to :

a. Bearing strength

b. Shearing strength

c. Tearing strength

d. Least of (a), (b), & (c)

27. If p and d are pitch and gross diameter of rivets, the efficiency (n) of the riveted joint is given by:

a. p/(p+d)

b. p/(p-d)

c. (p+d)/p

d. (p-d)/p

28. The weakest plane in a fillet weld is :

a. Side parallel to force

b. Side normal to the force

c. Smaller of sides

d. Throat

UNIT-2: Steel Beams

1. As per Indian standards, rolled steel I-sections are classified into :

a. four series

b. five series

c. Six series

d. Seven series

b. five series

2. The rolled steel beams, shear force is resisted by :

a. Flange only

b. Web only

c. Web and flanges together

d. Top flange only

b. Web only

3. Out of all the available rolled steel sections the most commonly used section as beam is :

a. T-section

b. I-section

c. L-section

d. Channel-section

b. I-section

4. The maximum spacing of vertical stiffeners in plate girder is limited to:

a. 0.8d

b. d

c. 1.5d

d. 2d

c. 1.5d

5. The vertical plate of plate girder is termed as :

a. Web plate

b. Flange plate

c. Cover plate

d. None of the above

a. Web plate

6. When the load is acting downward in a simply supported beam, the bending stress is :

a. Maximum at neutral axis

b. Compressive above the neutral axis

c. Tensile below the neutral axis

d. Both (b) & (c)

d. Both (b) & (c).

7. Any major beam in a structure is known as :

a. Subsidiary beam

b. Joist

c. Girder

d. Secondary beam

c. Girder

8. Web crippling in beams generally occurs at the points where :

a. Concentrated load is acting

b. Deflection is maximum

c. Bending moment is maximum

d. Shear force is maximum

a. Concentrated load is acting

UNIT-3: Design of RC flanged Beams

1. The value of partial safety factor for steel is :

a. 1.5

b. 1.2

c. 1.15

d. 1.25

c. 1.15

2. The maximum strain in steel at failure is :

a. fy/1.15Es + 0.002

b. 0.002

c. fy/1.15Es + 0.0035

d. 0.0035

a. fy/1.15Es + 0.002

3. Effective depth of a beam is the distance from top most compressive fiber to :

a. Bottom of tensile reinforcement

b. Top of tensile reinforcement

c. Centre of tensile reinforcement

d. Bottom of beam

c. Centre of tensile reinforcement

4. The moment of resistance of a T-beam is large due to large :

a. Tensile steel

b. Compressive steel

c. Compressive area of flange

d. None of the above

c. Compressive area of flange

5. According to IS:456-2000, side face reinforcement should be provided when depth of a baem exceeds :

a. 650 mm

b. 700 mm

c. 725 mm

d. 750 mm

6. In the limit state method of design of structures, the over reinforced sections are :

a. Not permitted

b. Permitted

c. Permitted only in extreme cases

d. None of the above

a. Not permitted

7. Overall depth of the beam is obtained by adding effective depth and :

a. Clear cover

b. Minimum cover

c. Effective cover

d. Nominal cover

c. Effective cover

8. In an under-reinforced section :

a. Concrete is fully stressed

b. Steel is fully stressed

c. Both (a) & (b)

d. None of the above

b. Steel is fully stressed

9. The portion of the beam below the slab in a T-beam is known as :

a. Flange

b. Web

c. Effective width

d. None of the above

b. Web

10. For a continuous T-beam, the ratio of effective span to effective depth of the beam should be less than :

a. 10

b. 30

c. 20

d. 26

11. The side face reinforcement, if required in a T-beam will be :

a. 0.1% of the web area

b. 0.15% of the web area

c. 0.02% to 0.03% of the web area

d. half of the longitudinal reinforcement

a. 0.1% of the web area

12. The neutral axis of a T-beam :

a. Always passes through the flange area

b. Always passes through the rib area

c. Always at the junction of the rib and flange

d. Can exist anywhere in the section

13. For a simply supported T-beam the ratio of effective span to depth of the beam should be less than :

a. 15

b. 20

c. 40

d. 80

b. 20

UNIT-4: Design of Slab

1. In the design of two way slab restrained at all edges torsional reinforcement required is :

a. 0.375 times the area of steel provided in shorter span

b. 0.375 times the area of steel provided at mid span in same direction

c. 0.75 times the area of steel provided at mid span in same direction

d. None of the above

c. 0.75 times the area of steel provided at mid span in same direction

2. The area of plain bars used as distribution reinforcement in slabs should not be less than :

a. 0.12% of gross area of concrete

b. 0.15% of gross area of concrete

c. 0.18% of gross area of concrete

d. 0.21% of gross area of concrete

b. 0.15% of gross area of concrete

3. If the reinforced concrete slab is 80 mm thick. The maximum size of reinforcement bar that can be used for this slab :

a. 6 mm

b. 8 mm

c. 10 mm

d. 12 mm

c. 10 mm

4. In slab, the transverse reinforcement is provided at... to the span of slab :

a. 45°

b. 60°

c. 75°

d. 90°

b. 60°

5. In one way slab, main steel is provided along...... span:

a. Longer

b. Shorter

c. Both (a) & (b)

d. None of these

b. Shorter

6. In two way slabs, bending occurs in...... direction :

a. Longer

b. Shorter

c. Both (a) & (b)

d. None of these

c. Both (a) & (b)

7. The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of :

a. 10 mm

b. 15 mm

c. 20 mm

d. 25 mm

8. Torsional reinforcement is provided in :

a. One way slab

b. Two way slab

c. Both (a) & (b)

d. None of these

c. Both (a) & (b)

9. The live load to be considered for an inaccessible roof is :

a. 2KN/m²

b. 1KN/m²

c. 1.5KN/m²

d. 0.75KN/m²

10. The maximum diameter of a reinforcing bar in a slab is not more than.... of the total thickness of slab :

a. 1/4

b. 1/2

c. 1/3

d. 1/8

11. The centre to centre distance of main bars in a slab shall not exceed :

a. 200 mm

b. 500 mm

c. 300 mm

d. 400 mm

c. 300 mm

12. In a two way slab, minimum reinforcement is provided in :

a. Central strip

b. Side strip

c. Edge strip

d. Middle strip

c. Edge strip

13. .... is provided to distribute the concentrated loads coming on the slab. :

a. Main reinforcement

b. Distribution reinforcement

c. Both (a) & (b)

d. None of these

b. Distribution reinforcement

14. The portion of slab which acts with the beam is called as :

a. Web

b. T-beam

c. Rib

d. Flange

15. The ly/lx ratio for a two way slab is :

a. = 2.0

b. ≤ 2.0

c. = 1.0

d. > 2.0

b. ≤ 2.0

16. The centre to centre distance of distribution bars in a slab shall not exceed :

a. 300 mm

b. 350 mm

c. 400 mm

d. 450 mm

17. To prevent cracking of the edges of slab the corners should be provided with :

a. Shear reinforcement

b. Torsion reinforcement

c. Tension reinforcement

d. Compression reinforcement

b. Torsion reinforcement

18. As per IS code, critical section for two way shear is at the :

a. Face of column

b. Effective depth from the face of column

c. Half the effective depth from the face of column

d. None of these

c. Half the effective depth from the face of column