Masonry Design Civil Engineering MCQ - Set 02

Practice Test: Question Set - 02


1. The bending stress in a wall or column subjected to effective vertical load need not be considered, if the eccentricity ratio is
    (A) Less than or equal to 1/24
    (B) Less than or equal to 1/6
    (C) More than 1/24
    (D) Less than or equal to 1/12

2. Assertion A : Lime based mortars give higher ratio of brickwork strength to mortar strength as compared to non-lime mortar.
Reason R : Lime based mortars have lower bond strength as compared to non-lime mortars.
Select your answer according to the codes given below:
    (A) Both A and R is true and R is the correct explanation of A
    (B) Both A and R is true but R is not the correct explanation of A
    (C) A is true but R is false
    (D) A is false but R is true

3. In the case of panel wall subjected to horizontal loads at right angles to the plane of the wall, with the mortar not leaner than Ml type, tensile stress in bending in the vertical direction may be allowed to the extent of
    (A) 0.4 kg/cm²
    (B) 0.7 kg/cm²
    (C) 1.0 kg/cm²
    (D) 1.2 kg/cm²

4. Consider the following statements:
  1. Masonry in rich cement mortar though having good strength with high shrinkage is much liable for surface cracks.
  2. Lime mortar possesses poor workability and poor water retentivity and also suffers high shrinkage.
  3. Masonry in lime mortar has better resistance against rain penetration and is less liable to crack when compared to masonry in cement mortar.
Which of these statements are correct?
    (A) 1, 2 and 3
    (B) 1 and 2
    (C) 2 and 3
    (D) 1 and 3

5. 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
    (A) 0
    (B) Between 0 and 1
    (C) 1
    (D) Greater than 1

6. 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
    (A) 10 %
    (B) 25 %
    (C) 33⅓ %
    (D) 50 %

7. For masonry work with solid bricks, consistency of mortar should be
    (A) 5 to 8 cm
    (B) 9 to 13 cm
    (C) 14 to 18 cm
    (D) 19 to 23 cm

8. Consider the following statements regarding provision of chases in masonry,
  • (i) No chase should be permitted in a half brick load-bearing wall,
  • (ii) Vertical chases should not be closer than 2 m in any stretch of a wall,
  • (iii) Chases should be provided near to bearings of beams and lintels.
Of these statements
    (A) (i) and (ii) are correct
    (B) (i) and (iii) are correct
    (C) (ii) and (iii) are correct
    (D) (i), (ii) and (iii) are correct

9. 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
    (A) 0.15 MPa
    (B) 0.125 MPa
    (C) 0.1 MPa
    (D) 0.075 MPa

10. Maximum slenderness ratio of load bearing walls for a dwelling having more than 2 storeys
  • (i) Shall not exceed 12 if lime mortar is used
  • (ii) Shall not exceed 18 if cement lime mortar 1 : 2 : 9 is used
  • (iii) Shall not exceed 24 if cement mortar 1 : 6 is used
Of these statements
    (A) (i) and (ii) are correct
    (B) (ii) and (iii) are correct
    (C) (i) and (iii) are correct
    (D) (i) and (ii) and (iii) are correct

11. 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
    (A) 0.6
    (B) 0.75
    (C) 0.85
    (D) 0.95

12. 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?
    (A) Providing buttresses at certain intervals
    (B) Providing a deeper foundation
    (C) Using a richer mortar
    (D) Using stronger bricks

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Item Reviewed: Masonry Design Civil Engineering MCQ - Set 02 Rating: 5 Reviewed By: Pranab Debnath
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