# Design of Masonry Structures Multiple choice Questions

Posted On:February 2, 2019, Posted By: Latest Interview Questions, Views: 1482, Rating :

## Design of Masonry Structures Objective Questions and Answers

Dear Readers, Welcome to Design of Masonry Structures Objective Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of Design of Masonry Structures MCQs. These objective type Design of Masonry Structures questions are very important for campus placement test and job interviews. As per my experience good interviewers hardly plan to ask any particular question during your Job interview and these model questions are asked in the online technical test and interview of many IT & Non IT Industries.

### 1. If the ratio of centre 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

### 2. 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

Ans: a

### 3. 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

### 4. The effective height of free standing nonload 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

a) 0.75 H

b) 0.85 H

c) 1.0 H

d) 1.5 H

Ans: a

a) 5 cm

b) 7.5 cm

c) 10 cm

d) 15 cm

Ans: b

a) 0 6

b) 0.75

c) 0.85

d) 0.95

Ans: c

a) 0.64 m

b) 0.96 m

c) 1.28 m

d) 1.5 m

Ans:a

### 9. 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

Ans:a

### 10. Assertion A : For eccentricity ratio exceeding 1/6, effective thickness of masonry will get reduced.

Reason     R     :   For  eccentricity  ratio exceeding 1/6, there will be tension on one side of the member. Select your answer according to the codes give below:

a) Both A and R are true and R is the correct explanation of A.

b) Both A and R are true and R is not the correct explanation of A.

c) A is true but R is false.

d) A is false but R is true.

Ans:a

a) 10%

b) 25%

c) 33 1/3%

d) 50%

Ans:b

### 12. For designing masonry components of a structure, seismic forces provision in the design calculation is not necessary for buildings constructed in

a) Zone I only

b) Zone I and II

c) Zone I, II and III

d) Zone I, II, III and IV

Ans:b

### 13. The mode of failure of a very short masonry member having h/t ratio of less than 4 is by

a) shear

b) vertical tensile splitting

c) buckling

d) any of the above

Ans:a

### Reason R : By controlling the maximum slenderness ratio, failure is by excessive stress and not by buckling. Select your answer according to codes given below:

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 .the correct explanation of A.

c) A is true but R is false.

d) A is false but R is true.

Ans:a

### 15.  The timber floor not spanning on the masonry wall but properly anchored to the wall gives

a) lateral restraint but not rotational restraint

b) rotational restraint but not  lateral restraint

c) both lateral and rotational restraints

d) neither lateral nor rotational restraint

Ans:a

### 16. Full restraint is provided by

(i)   foundation footing of a wall

(ii) timber floor spanning on the wall and anchored to the wall

(iii) RCC slab with a minimum bearing of 10 cm on the wall Of these statements

a) (i) and (iii) are correct

b) (i) and (ii) are correct

c) (ii) and (iii) are correct

d) (i), (ii) and (iii) are correct

Ans:d

a) 10 cm

b) 15 cm

c) 20 cm

d) 30 cm

Ans:a

a) 1 : 2 : 3

b) 1 : 2: 4

c) 1:1:6

d) 1:2:9

Ans:d

### Select your answer according to the codes given below:

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 the correct explanation of A.

c) A is true but R is false.

d) A is false but R is true.

Ans:c

a) 5 to 8 cm

b) 9 to 13 cm

c) 14 to 18 cm

d) 19 to 23 cm

Ans:b

a) 50%

b) 60%

c) 70%

d) 80%

Ans:c

a) 3

b) 5

c) 7.5

d) 10

Ans:d

### 23. Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have

a) high shrinkage

b) less strength

c) both (a) and (b)

d) none of above

Ans:a

### 24. Cement mortars richer than 1 : 3 are not used in masonry because

(i)   there is no gain in strength of masonry (ii) there is high shrinkage (iii) they are prone to segregation Of these statements

a) Only (ii) is correct

b) (i) and (ii) are correct

c) (ii) and (iii) are correct

d) (i), (ii) and (iii) are correct

Ans:b

a) 50 cm

b) 60 cm

c) 75 cm

d) 100 cm

Ans:b

### 26. For earthquake resistant masonry buildings, where seismic coefficient is less than 0.08, the horizontal distance between two openings shall not be less than

a) Vt x height of shorter opening

b) Vt x height of longer opening

c) Ax height of shorter opening

d) Vi x height of longer opening

Ans:a

### (iv) The bands shall be made of reinforced concrete only. Of these statements, the correct statements are

a) (i) and (ii)

b) (i) and (iii)

c) (ii) and (iv)

d) (ii) and (iii)

Ans:d

### 28. In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as

a) sum of thickness of both leaves

b) two-third of the sum of thickness of both the leaves

c) actual thickness of the stronger leaf

d) larger of (b) and (c)

Ans:d

### Reason R : A column can buckle around either of the two horizontal axes while a wall can buckle around only one axis. Select your answer according to the codes given below:

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 the correct explanation of A.

c) A is true but R is false.

d) A is false but R is true.

Ans:a

### (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

Ans:a

### Of these statements

a) 1 alone is correct

b) 2 alone is correct

c) both 1 and 2 are correct

d) neither 1 nor 2 is correct

Ans:c

a) 0.4 kg/cm2

b) 0.7 kg/cm2

c) 1.0 kg/cm2

d) 1.2 kg/cm2

Ans:c

### 33. 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

Ans:a

### 34. Consider the following statements : Sand in mortar is needed for

1. decreasing the quantity of cement.

2. reducing shrinkage.

3. decreasing the surface area of the binding material.

4. increasing the strength.

Of these statements:

a) 2, 3 and 4 are correct

b) 1,2 and 3 are correct

c) 1,3 and 4 are correct

d) 1,2 and 4 are correct

Ans:

### A  high lime content in a composite cement-lime mortar results in

1. slow hardening.

2. quick setting.

3. weaker mortar. Of these statements

a) 2 and 3 are correct

b) 1 and 2 are correct

c) 1 and 3 are correct

d) 1, 2 and 3 are correct

Ans:c

### The correct sequence of increasing order of their strengths is

a) LLLZ.HLHI.MLMJ

b) L2,L,,M2>Mi,H2)H,

c) M,,M2, H,,H2,Li,L2

d) L2,L,,M,,M2,H,,H2

Ans: b

### 37. Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be

a) more

b) less

c) the same in both the cases

d) 100%

Ans:b

a) 15

b) 19

c) 20

d) 25

Ans:a

a) 0.090

b) 0.095

c) 0.100

d) 0.105

Ans:c

a) 1.2

b) 1.4

c) 1.6

d) 2.0

Ans:c

### 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

a) 1,2 and 3

b) 1 and 2

c) 2 and 3

d) 1 and 3

Ans:d

a) 0.15 MPa

b) 0.125 MPa

c) 0.1 MPa

d) 0.075 MPa

Ans:a