Design of Steel Structures

31. An imaginary line along which rivets are placed, is known as

  1. Rivet line
  2. Back line
  3. Gauge line
  4. All the above

Correct answer: (D)
All the above

32. Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between

  1. 10° to 30°
  2. 30° to 40°
  3. 40° to 70°
  4. 90°

Correct answer: (C)
40° to 70°

33. Area of openings for buildings of large permeability is more than

  1. 10% of wall area
  2. 20% of wall area
  3. 30% of wall area
  4. 50% of wall area

Correct answer: (B)
20% of wall area

34. As compared to field rivets, the shop rivets are

  1. Stronger
  2. Weaker
  3. Equally strong
  4. Any of the above

Correct answer: (A)
Stronger

35. As per IS : 800, for compression flange, the outstand of flange plates should not exceed

  1. 12 t
  2. 16 t
  3. 20 t
  4. 25 t
    Where 't'=thickness of thinnest flange plate

Correct answer: (B)
16 t

36. As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into

  1. 4 zones
  2. 5 zones
  3. 6 zones
  4. 7 zones

Correct answer: (C)
6 zones

37. As per IS: 800, in the plastic design, which of the following pairs are correctly matched?
Working Loads Load factor
(i) Dead load 1.7
(ii) Dead Load + imposed load 1.7
(iii) Dead load + load due to wind or 1.3 seismic forces
(iv) Dead load + imposed load + load 1.7 due to wind or seismic forces Of these statements

  1. (i) and (ii) are correct
  2. (i), (ii) and (iii) are correct
  3. (ii) and (iii) are correct
  4. Only (i) is correct

Correct answer: (A)
(i) and (ii) are correct

38. As per ISI, rolled steel beam sections are classified into

  1. Two series
  2. Three series
  3. Four series
  4. Five series

Correct answer: (D)
Five series

39. Battening is preferable when the
(i) Column carries axial load only
(ii) Space between the two main components is not very large
(iii) Column is eccentrically loaded
The correct answer is

  1. Only (i)
  2. Only (iii)
  3. (i) and (ii)
  4. (ii) and (iii)

Correct answer: (C)
(i) and (ii)

40. Bearing stiffener in a plate girder is used to

  1. Transfer the load from the top flange to the bottom one
  2. Prevent buckling of web
  3. Decrease the effective depth of web
  4. Prevent excessive deflection

Correct answer: (B)
Prevent buckling of web

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