Design of Masonry Structures Multiple Choice Questions and Answers for PDF

1.The basic stress in masonry units having height to  width  ratio  of  1.5   may  be increased by a factor of
a)    1.2
b) 1.4
c) 1.6
d) 2.0
Ans:c

2. Assertion A : For identical strength, a composite cement-lime mortar is preferred over cement mortar.
Reason R : Composite cement-lime mortar has higher drying shrinkage than cement mortar.
Select your answer based on the codes given below. Codes:
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not a correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Ans:c

3.     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
Ans:d

4. 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
Ans:a

5. If the ratio of center to centre spacing of intersecting walls to actual thickness of intersecting wall is more th n 20, then the stiffening coefficient for wall proper will be
a) 0
b) between 0 and 1
c) 1
d) greater than 1
Ans: d

6. A 200 mm thick brick masonry wall made of modular bricks carries an axial load of 30 kN/m from wall above and an eccentric load of 20 kN/m from RCC floor acting at a distance of 47.5 mm from the centre line of the wall. The resultant eccentricity ratio is
a) b) c) d)
0.090
0.095
0.100
0.105
Ans:c

7. Maximum slenderness ratio of load bearing walls for a dwelling having more than 2 stores
(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
Ans: a

8. Where a structural component or a system is providing lateral support to five or more walls or columns, the lateral load to be resisted may be taken as
a) 4 percent
b) 5 percent
c) 6 percent
d) 7 percent
of the total vertical load on the most heavily loaded wall or column in the group.
Ans: d

9. The effective height of free standing non load bearing wall and column respectively will be
a) 1.OH and 1.OH
b) 1.5Handl.5H
c) 2.0Handl.5H
d) 2.0H and 2.0H
where H is the height of wall or column between centres of supports.
Ans: d

10. If H is the height of wall between centres of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be
a) 0.75 H
b) 0.85 H
c) 1.0 H
d) 1.5 H
Ans: a

Read MOre Quesations:
Design of Masonry Structures MCQs Part1
Design of Masonry Structures MCQs Part2

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