DESIGN OF MASONRY STRUCTURES QUIZ

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

6 %

5 %

7 %

4 %

TRUE ANSWER : ?
YOUR ANSWER : ?

Minimum compressive strength in N/mm² for H1 type mortar used for masonry is

3

7.5

5

10

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 : ?

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

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

(ii) and (iii) are correct

(i) and (iii) are correct

(i) and (ii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Zone I only

Zone I and II

Zone I, II, III and IV

Zone I, II and III

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Two-third of the sum of thickness of both the leaves

Sum of thickness of both leaves

Larger of (B) and (C)

Actual thickness of the stronger leaf

TRUE ANSWER : ?
YOUR ANSWER : ?

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 is false but R is true

A is true but R is false

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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

25 %

33? %

10 %

50 %

TRUE ANSWER : ?
YOUR ANSWER : ?

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

0.95

0.6

0.75

0.85

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?

1, 2 and 3

2 and 3

1 and 3

1 and 2

TRUE ANSWER : ?
YOUR ANSWER : ?

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