Design of Steel Structures

211. The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as

  1. 1.8 L
  2. L
  3. 1.1 L
  4. 1.5 L

Correct answer: (C)
1.1 L

212. The effective length of a compression member of length L held in position and restrained in direction at one end and effectively restrained in direction but not held in position at the other end, is

  1. L
  2. 0.67 L
  3. 0.85 L
  4. 1.5 L

Correct answer: (A)
L

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

  1. L
  2. 0.67 L
  3. 0.85 L
  4. 1.5 L

Correct answer: (A)
L

214. The effective length of a compression member of length L, held in position and restrained in direction at both ends, is

  1. L
  2. 0.67 L
  3. 0.85 L
  4. 1.5 L

Correct answer: (B)
0.67 L

215. The effective length of a double angle strut with angles placed back to back and connected to both the sides of a gusset plate, by not less than two rivets, is

  1. 0.5 L
  2. 0.67 L
  3. 0.85 L
  4. 2 L

Correct answer: (C)
0.85 L

216. The effective length of a fillet weld should not be less than

  1. Two times the weld size
  2. Four times the weld size
  3. Six times the weld size
  4. Weld size

Correct answer: (B)
Four times the weld size

217. The effective length of a weld, is taken as the actual length

  1. Minus the size of weld
  2. Minus twice the size of weld
  3. Plus the size of weld
  4. Plus twice the size of weld

Correct answer: (B)
Minus twice the size of weld

218. The elastic strain for steel is about

  1. 1/12 of strain at the initiation of strain hardening and about 1/120 of maximum strain
  2. 1/2 of strain at the initiation of strain hardening and about 1/12 of maximum strain
  3. 1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain
  4. 1/24 of strain at the initiation of strain hardening and about 1/200 of maximum strain

Correct answer: (C)
1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain

219. The equivalent axial load may be defined as the load which produces a stress equal to

  1. Maximum stress produced by the eccentric load
  2. Maximum stressed fibre
  3. Bending stress
  4. None of these

Correct answer: (A)
Maximum stress produced by the eccentric load

220. The equivalent axial tensile load Pe, which produces an average axial tensile stress in the section equivalent to the combined stress due to axial tension P and bending M, at the extreme fibre of the section, is given by (where Z is the section modulus of the section).

  1. Pe = P + MA/Z
  2. Pe = P - MA/Z
  3. Pe = P - Z/MA
  4. Pe = P + Z/MA

Correct answer: (A)
Pe = P + MA/Z

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