Design Of Steel Structures Set 7

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This set of Design of Steel Structures Multiple Choice Questions & Answers (MCQs) focuses on Design Of Steel Structures Set 7

Q1 | The minimum thickness of a steel plate, which is directly exposed to weather and is not accessiblefor cleaning and repainting, should be:
  • 4.5 mm
  • 6 mm
  • 8 mm
  • 10 mm
Q2 | For determination of allowable stress in axial compression, Indian Standard Institution hasadopted
  • euler\s formula
  • rankine formula
  • perry robertson formula
  • secant formula
Q3 | Rolled steel beams are:
  • mainly used to resist bending stress
  • used as independent sections to resist compressive stress
  • used as independent sections to resist tensile stress
  • all the above
Q4 | According to IS : 800 - 71, the minimum thickness of a vertically stiffened web plate, shall not beless than
  • d/85
  • d/200
  • d/225
  • d/250
Q5 | A web plate is called unstiffened if the ratio of clear depth to thickness is less than
  • 35
  • 50
  • 65
  • 85
Q6 | A butt weld is specified by
  • effective throat thickness
  • plate thickness
  • size of weld
  • penetration thickness
Q7 | The most economical section for a column, is
  • rectangular
  • solid round
  • flat strip
  • tubular section
Q8 | In rolled steel beams, shear force is mostly resisted by
  • web only
  • flanges only
  • web and flanges together
  • none of these
Q9 | If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be
  • 40 mm
  • 60 mm
  • 80 mm
  • 100 mm
Q10 | The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mmplus (where t is the thickness in mm of the thinner outside plate).
  • 2 t
  • 4 t
  • 6 t
  • 8 t
Q11 | For simply supported beams, the maximum permitted deflection, is
  • 1/325 of the span
  • 1/350 of the span
  • 1/375 of the span
  • 1/400 of the span
Q12 | The rolled steel I-sections are most commonly used as beams because these provide
  • large moment of inertia with less cross-sectional area
  • large moment of resistance as compared to other section
  • greater lateral stability
  • all the above
Q13 | As per IS : 875, for the purposes of specifying basic wind velocity, the country has been dividedinto
  • 4 zones
  • 5 zones
  • 6 zones
  • 7 zones
Q14 | Net sectional area of a tension member, is equal to its gross section area
  • plus the area of the rivet holes
  • divided by the area of rivet holes
  • multiplied by the area of the rivet holes
  • none of these
Q15 | For a single section used as a tension member, the given area is assumed
  • 20% to 30% in excess of the net area
  • 30% to 40% in excess of the net area
  • 40% to 50% in excess of the net area
  • 50% to 60% in excess of the net area
Q16 | The effective length of a weld, is taken as the actual length
  • minus the size of weld
  • minus twice the size of weld
  • plus the size of weld
  • plus twice the size of weld
Q17 | The greatest gauge of long rivets should not exceed (where d is the diameter of the holes).
  • 2 d
  • 4 d
  • 6 d
  • 8 d
Q18 | The shape factor of an isosceles triangle for bending about the axis parallel to the base is:
  • 1.5
  • 1.7
  • 2.0
  • 2.34
Q19 | Rolled steel Tee-sections are used
  • as columns
  • with flat strips to connect plates in steel rectangular tanks
  • as built up sections to resist axial tension
  • none of these
Q20 | Which of the following types of riveted joint is free from bending stresses?
  • lap joint
  • butt joint with single cover plate
  • butt joint with double cover plates
  • none of the above
Q21 | The beams supporting the steps of a stair are generally known as
  • headers
  • trimmers
  • stringers
  • spandrel beams
Q22 | Poisson's ratio for steel within elastic limit, ranges from
  • 0.15 to 0.20
  • 0.25 to 0.24
  • 0.25 to 0.33
  • 0.33 to 0.35
Q23 | The minimum width B of a solid casing for a cased beam, is equal to
  • b = b + 25 mm
  • b = b + 50 mm
  • b = b + 75 mm
  • b = b + 100 mm
Q24 | Horizontal stiffener in a plate girder is provided to safeguard against
  • shear buckling of web plate
  • compression buckling of web plate
  • yielding
  • all of the above
Q25 | If W and L are the total superimposed load and the span of a plate girder in metres, theapproximate self weight (W) of the girder, is taken as
  • m = wl/100
  • m = wl/200
  • m = wl/300
  • m = wl/400