Design of Steel Structures MCQs with answers Page - 15

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Q. With a percentage increase of carbon in steel, decreases its

  • (A) strength
  • (B) hardness
  • (C) brittleness
  • (D) ductility

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Q. The allowable stress in axial tension is generally kept less if thickness of the member is more than

  • (A) 10 mm
  • (B) 12 mm
  • (C) 15 mm
  • (D) 20 mm

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Q. The maximum permissible slenderness ratio of compression member carrying dead and superimposed load, is

  • (A) 180
  • (B) 200
  • (C) 250
  • (D) 350

A

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Q. Tacking rivets in compression plates not exposed to the weather, have a pitch not exceeding 300 mm or

  • (A) 16 times the thickness of outside plate
  • (B) 24 times the thickness of outside plate
  • (C) 32 times the thickness of outside plate
  • (D) 36 times the thickness of outside plate

A

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Q. A single angle in tension is connected by one leg only. If the areas of connecting and outstanding legs are respectively a and b, net effective area of the angle, is

  • (A) a - [b/{1 + 0.35 (b/a)}]
  • (B) a + [b/{1 + 0.35 (b/a)}]
  • (C) a - [b/{1 + 0.2 (b/a)}]
  • (D) a + [b/{1 + 0.2 (b/a)}]

A

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Q. The effective length of a compression member of length L held in position at both ends but not restrained in direction, is

  • (A) L
  • (B) 0.67 L
  • (C) 0.85 L
  • (D) 1.5 L

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Q. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as

  • (A) 0.65 kN/m²
  • (B) 0.75 kN/m²
  • (C) 1.35 kN/m²
  • (D) 1.50 kN/m²

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Q. If N is the number of rivets in the joint, the strength of a riveted joint against shearing of rivets, is given by

  • (A) Ps = N d2 × Ps
  • (B) Ps = N × (d × t × ps)
  • (C) Ps = N × (p - d) × t × Ps
  • (D) Ps = N × (P + d) × t × ps

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Q. The sway bracing is designed to transfer

  • (A) 2Vi % of the top panel wind load to bottom bracing
  • (B) 10% of the top panel wind load to bottombracing
  • (C) 25% of the top panel wind load to bottombracing
  • (D) 50% of the top panel wind load to bottom bracing

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Q. Column footing is provided

  • (A) To spread the column load over a larger area
  • (B) To ensure that intensity of bearing pressure between the column footing and soil does not exceed permissible bearing capacity of the soil
  • (C) To distribute the column load over soil through the column footing
  • (D) All the above

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