Design of Steel Structures MCQs with answers Page - 14

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Q. The permissible bearing stress in steel, is

  • (A) 1500 kg/cm2
  • (B) 1890 kg/cm2
  • (C) 2025 kg/cm2
  • (D) 2340 kg/cm2

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Q. Strengths of a rivet in single shearing, in bearing and in tearing are 3425 kg, 4575 kg and 5025 kg respectively. If the load in the member is 35 tonnes, the number of rivets required, is

  • (A) 10
  • (B) 11
  • (C) 12
  • (D) 13

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Q. The bending moment for filler joists at the middle of an intermediate span, is

  • (A) wl²/10
  • (B) - wl²/10
  • (C) - wl²/12
  • (D) wl²/12

A

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Q. A simply supported beam carrying a central load, will be safe in deflection if the ratio of its span to depth, is

  • (A) < 19
  • (B) < 24
  • (C) > 19
  • (D) > 24

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Q. When a load is transferred through one surface to another surface in contact, the stress is known as

  • (A) tensile stress
  • (B) compressive stress
  • (C) shearing stress
  • (D) none of these

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

  • (A) = p/p - d
  • (B) = p/p + d
  • (C) = p - d/p
  • (D) = p + d/p

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Q. The slenderness ratio of a column is zero when its length

  • (A) is zero
  • (B) is equal to its radius of gyration
  • (C) is supported on all sides throughout its length
  • (D) is between the points of zero moments

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Q. The maximum axial load which is just sufficient to keep a column in a small deflected shape, is called

  • (A) crippling load
  • (B) buckling load
  • (C) critical load
  • (D) all the above

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Q. Spans of continuous fillers are considered approximately equal if the longest span does not exceed the shortest span by more than

  • (A) 5 %
  • (B) 10 %
  • (C) 15 %
  • (D) 20 %

A

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Q. The ratio of the span L of the filler joists to the depth d from the underside of the joist to the top of the structural concrete, should not exceed

  • (A) 60
  • (B) 45
  • (C) 35
  • (D) 25