1. Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars
have
Correct : A. high shrinkage
2. In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as
Correct : D. larger of (b) and (c)
3. For earthquake resistant masonry buildings, the vertical distance between openings one above the
other in a load bearing wall shall not be less than
Correct : B. 60 cm
4. The mode of failure of a very short masonry member having h/t ratio of less than 4 is by
Correct : A. shear
5. The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor
of
Correct : C. 1.6
6. The timber floor not spanning on the masonry wall but properly anchored to the wall gives
Correct : A. lateral restraint but not rotational restraint
7. A free standing brick wall 20 cm thick is subjected to a wind pressure of 75kg/m². The maximum
height of wall from stability consideration is
Correct : A. 0.64 m
8. If 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
Correct : A. 0.75 h
9. For designing masonry components of a structure, seismic forces provision in the design
calculation is not necessary for buildings constructed in
Correct : B. zone i and ii
10. A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear
height between RCC slabs at top and bottom. The slenderness ratio of the wall is
Correct : A. 15
11. Water retentivity for brick masonry should not be less than
Correct : C. 70 %
12. The bending stress in a wall or column subjected to effective vertical load need not be considered,
if the eccentricity ratio is
Correct : A. less than or equal to 1/24
13. If the ratio of center to center spacing of intersecting walls to actual thickness of intersecting wall
is more than 20, then the stiffening coefficient for wall proper will be
Correct : D. greater than 1
14. If the eccentricity ratio is more than 1/24, then increase in the permissible stress in the design of
wall subjected to eccentric loading as per code is
Correct : B. 25 %
15. For masonry work with solid bricks, consistency of mortar should be
Correct : B. 9 to 13 cm
16. For masonry built in 1 : 1 : 6 cement-lime-sand mix mortar or equivalent, the horizontal shear
stress permissible on the area of a mortar bed joint is
Correct : A. 0.15 mpa
17. The thickness of each leaf of a cavity wall shall not be less than
Correct : B. 7.5 cm
18. Minimum compressive strength in N/mm² for H1 type mortar used for masonry is
Correct : D. 10
19. Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC
slab will be
Correct : B. less
20. If the horizontal cross-sectional area of a wall is 1200 cm², then the basic stress shall be multiplied
by a reduction factor equal to
Correct : C. 0.85
21. For strengthening a 50 m long and 5 m high straight compound wall built in brick work, which one
of the following would be most suitable?
Correct : A. providing buttresses at certain intervals
22. Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than