Design of Masonry Structures Multiple Choice Questions

Design of Masonry Structures

Question 26.

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.

 33? %

D.

 50 %

Explanation :

Explanation Not Provided

Question 27.

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.

 0.090

B.

 0.095

C.

 0.100

D.

 0.105

Explanation :

Explanation Not Provided

Question 28.

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

Explanation :

Explanation Not Provided

Question 29.

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

Explanation :

Explanation Not Provided

Question 30.

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

Explanation :

Explanation Not Provided