Design Of Masonry Structures MCQ

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• The timber floor not spanning on the masonry wall but properly anchored to the wall gives
  ক

  Lateral restraint but not rotational restraint

  খ

  Rotational restraint but not lateral restraint

  গ

  Both lateral and rotational restraints

  ঘ

  Neither lateral nor rotational restraint
• Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be
  ক

  More

  খ

  Less

  গ

  The same in both the cases

  ঘ

  100%
• Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have
  ক

  High shrinkage

  খ

  Less strength

  গ

  Both (A) and (B)

  ঘ

  None of above
• The effective height of free standing non-load bearing wall and column respectively will be
  ক

  1.0H and 1.0H

  খ

  1.5H and 1.5H

  গ

  2.0H and 1.5H

  ঘ

  2.0H and 2.0H
• The bending stress in a wall or column subjected to effective vertical load need not be considered, if the eccentricity ratio is
  ক

  Less than or equal to $$\frac{1}{{24}}$$

  খ

  Less than or equal to $$\frac{1}{6}$$

  গ

  More than $$\frac{1}{{24}}$$

  ঘ

  Less than or equal to $$\frac{1}{{12}}$$
• If ‘H’ is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be
  ক

  0.75 H

  খ

  0.85 H

  গ

  1.0 H

  ঘ

  1.5 H
• In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as
  ক

  Sum of thickness of both leaves

  খ

  Two-third of the sum of thickness of both the leaves

  গ

  Actual thickness of the stronger leaf

  ঘ

  Larger of (B) and (C)
• For designing masonry components of a structure, seismic forces provision in the design calculation is not necessary for buildings constructed in
  ক

  Zone I only

  খ

  Zone I and II

  গ

  Zone I, II and III

  ঘ

  Zone I, II, III and IV
• For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than
  ক

  50 cm

  খ

  60 cm

  গ

  75 cm

  ঘ

  100 cm
• Water retentivity for brick masonry should not be less than
  ক

  50%

  খ

  60%

  গ

  70%

  ঘ

  80%
• The thickness of each leaf of a cavity wall shall not be less than
  ক

  5 cm

  খ

  7.5 cm

  গ

  10 cm

  ঘ

  15 cm
• For masonry work with solid bricks, consistency of mortar should be
  ক

  5 to 8 cm

  খ

  9 to 13 cm

  গ

  14 to 18 cm

  ঘ

  19 to 23 cm