Building Construction

81. In soils possessing low bearing capacity, the type of foundation generally provided, is

  1. Column footing
  2. Grillage footing
  3. Raft footing
  4. All the above

Correct answer: (D)
All the above

82. In the construction of arches, sand box method is used for

  1. Centring
  2. Actual laying of arch work
  3. Striking of centring
  4. None of the above

Correct answer: (C)
Striking of centring

83. In the method of tube boring of soil investigation, the following is essential:

  1. A tube of about 2 metres length and 20 cm diameter with a cutting edge
  2. A flap valve at the bottom of tube is provided to extract the soil sample
  3. The tube is raised and lowered by 4 thick rope moving over a pulley suspended on a tripod stand
  4. All the above

Correct answer: (D)
All the above

84. In verandah floors outward slope is

  1. 1 in 40
  2. 1 in 50
  3. 1 in 60
  4. 1 in 70

Correct answer: (C)
1 in 60

85. In which of the following directions, the strength of timber is maximum?

  1. Parallel to grains
  2. 45° to grains
  3. Perpendicular to grains
  4. Same in all directions

Correct answer: (A)
Parallel to grains

86. In which of the following pairs both trees yield soft wood?

  1. Deodar and Shishum
  2. Chir and sal
  3. Sal and teak
  4. Chir and deodar

Correct answer: (D)
Chir and deodar

87. Mansard roof is a roof which slopes in

  1. Two directions without break in the slope on each side
  2. Two directions with break in the slope on each side
  3. Four directions without break in the slope on each side
  4. Four directions with break in the slope on each side

Correct answer: (D)
Four directions with break in the slope on each side

88. Minimum width of landing should be

  1. Equal to width of stairs
  2. Half the width of stairs
  3. Twice the width of stairs
  4. One fourth the width of stairs

Correct answer: (A)
Equal to width of stairs

89. Negative skin friction

  1. Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile
  2. Develops due to lowering of ground water
  3. Both (a) and (b)
  4. Neither (a) not (b)

Correct answer: (C)
Both (a) and (b)

90. Nogging of a common wooden partition is

  1. Upper horizontal wooden member
  2. Lower horizontal wooden member
  3. Intermediate horizontal wooden member
  4. Vertical wooden member

Correct answer: (C)
Intermediate horizontal wooden member

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