Design Of Steel Structures Set 16

Civil Engineering

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This set of Design of Steel Structures Multiple Choice Questions & Answers (MCQs) focuses on Design Of Steel Structures Set 16

Q1 | For determination of allowable stress in axial compression, Indian Standard Institution has adopted
  • Euler's formula
  • Rankine formula
  • Perry Robertson formula
  • Secant formula
Answer: Secant formula
Q2 | When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which moment in any rivet.)
  • Is at the maximum distance from CG of the rivet group
  • Is at the minimum distance from CG of the rivet group
  • Gives the maximum angle between the two forces Fa and Fm
  • Gives the minimum angle between the two forces Fa and Fm
Answer: Gives the minimum angle between the two forces Fa and Fm
Q3 | The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm plus (where t is the thickness in mm of the thinner outside plate).
  • 2 t
  • 4 t
  • 6 t
  • 8 t
Answer: 4 t
Q4 | Minimum spacing of vertical stiffeners is limited to (Where d is the distance between flange angles)
  • d/4
  • d/3
  • d/2
  • 2d/3
Answer: d/3
Q5 | 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 othersection
  • Greater lateral stability
  • All the above
Answer: All the above
Q6 | If P is the wind pressure in kg/cm2 , v is the velocity in km/hour and K is a constant of proportionality, then
  • P = K/v2
  • v = K/P2
  • P = Kv2
  • P = Kv
Answer: P = Kv2
Q7 | As per IS : 875, for the purposes of specifying basic wind velocity, the countryhas been divided into
  • 4 zones
  • 5 zones
  • 6 zones
  • 7 zones
Answer: 6 zones
Q8 | Study the following statements.(i) Top lateral bracing prevents the sides-way buckling of the chord.(ii) Sway bracing keeps the rectangular shape of the bridge cross-section.(iii) Sway bracing transfers the load from top of end posts to bearings.The correct answer is
  • Only (i)
  • Both (i) and (ii)
  • Both (i) and (iii)
  • All (i), (ii) and (iii)
Answer: Both (i) and (ii)
Q9 | The greatest gauge of long rivets should not exceed (where d is the diameter of theholes).
  • 2 d
  • 4 d
  • 6 d
  • 8 d
Answer: 8 d
Q10 | The shape factor of an isosceles triangle for bending about the axis parallel to thebase is:
  • 1.5
  • 1.7
  • 2.0 (D)
  • all
Answer: all
Q11 | Water pressure in a 80 cm water main is 10 kg/cm2. The minimum thickness of themetal required for the water main, not to be stressed more than 200 kg/cm2, is
  • 1 cm
  • 1.5 cm
  • 2 cm
  • 2.5 cm
Answer: 2 cm
Q12 | The beams supporting the steps of a stair are generally known as Headers
  • Trimmers
  • Stringers
  • Spandrel beams
  • none
Answer: Spandrel beams
Q13 | With usual notations of the letters, the shear stress fs at any point of the crosssection is given by
  • fs =FQ/It
  • fs =Ft/IQ
  • fs =It/FQ
  • fs =IF/Qt
Answer: fs =FQ/It
Q14 | If W and L are the total superimposed load and the span of a plate girder in metres, the approximate self weight (W) of the girder, is taken as
  • M = WL/100
  • M = WL/200
  • M = WL/300
  • M = WL/400
Answer: M = WL/300
Q15 | Maximum permissible slenderness ratio of a member normally acting as a tie in aroof truss, is
  • 180
  • 200
  • 250
  • 350
Answer: 350
Q16 | The capacity of the smallest pressed steel tank is 1000 litre
  • 1650 litre
  • 1950 litre
  • 2450 litre
  • none
Answer: 2450 litre
Q17 | When the depth of a plate girder is at least times the depth of vertical leg of the flange angles, the girder is known as deep plate girder, if is
  • 2
  • 4
  • 6
  • 8
Answer: 8
Q18 | If the pitch is 6 cm and rivet value is 4 tonnes, the number of rivets required for a riveted connection carrying an eccentric load of 15 tonnes at a distance of 30 cm from the centre line, is
  • 6
  • 8
  • 10
  • 15
Answer: 8
Q19 | The difference between gross diameter and nominal diameter for the rivets up to 25mm diameter is
  • 1.0 mm
  • 1.5 mm
  • 2.0 mm
  • 2.5 mm
Answer: 1.5 mm
Q20 | Pick up the correct statement from the following:
  • Vertical stiffeners may be placed in pairs one on each side of the web
  • Single vertical stiffeners may be placed alternately on opposite sides of the web
  • Horizontal stiffeners may be placed alternately on opposite sides of theweb
  • All the above
Answer: All the above
Q21 | The greatest permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to
  • 180 t
  • 220 t
  • 230 t
  • 270 t
Answer: 270 t
Q22 | The maximum slenderness ratio of a compression member carrying both dead and superimposed load is
  • 180
  • 200
  • 250
  • 350
Answer: 180
Q23 | Effective length of a column effectively held in position at both ends and restrained in direction at one end, is
  • L
  • 0.67 L
  • 0.85 L
  • 1.5 L
Answer: 0.85 L
Q24 | As per IS : 800, for compression flange, the outstand of flange plates should notexceed
  • 12 t
  • 16 t
  • 20 t
  • 25 tt
Answer: 16 t
Q25 | If the unsupported length of a stanchion is 4 metres and least radius of gyration of its cross-section is 5, the slenderness ratio of the stanchion, is
  • 60
  • 70
  • 80
  • 100
Answer: 80
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