DESIGN OF MASONRY STRUCTURES QUIZ

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

0.85

0.6

0.75

0.95

TRUE ANSWER : ?
YOUR ANSWER : ?

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?

2 and 3

1, 2 and 3

1 and 3

1 and 2

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Greater than 1

Between 0 and 1

1

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Neither lateral nor rotational restraint

Lateral restraint but not rotational restraint

Rotational restraint but not lateral restraint

Both lateral and rotational restraints

TRUE ANSWER : ?
YOUR ANSWER : ?

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

0.1 MPa

0.15 MPa

0.125 MPa

0.075 MPa

TRUE ANSWER : ?
YOUR ANSWER : ?

Water retentivity for brick masonry should not be less than

50 %

70 %

60 %

80 %

TRUE ANSWER : ?
YOUR ANSWER : ?

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

(i) and (ii) are correct

(i) and (iii) are correct

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

(ii) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : For eccentricity ratio exceeding 1/6, effective thickness of masonry will get reduced.<br/>Reason R : For eccentricity ratio exceeding 1/6, there will be tension on one side of the member.<br/>Select your answer according to the codes give below:

Both A and R is true and R is the correct explanation of A

Both A and R is true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

TRUE ANSWER : ?
YOUR ANSWER : ?

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:

Both A and R is true and R is not the correct explanation of A

A is false but R is true

Both A and R is true and R is the correct explanation of A

A is true but R is false

TRUE ANSWER : ?
YOUR ANSWER : ?

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 __________ of the total vertical load on the most heavily loaded wall or column in the group

5 %

4 %

6 %

7 %

TRUE ANSWER : ?
YOUR ANSWER : ?

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