DESIGN OF MASONRY STRUCTURES QUIZ

Consider the following statements: The use of relatively weak mortar<br/>1. Will accommodate movements due to loads and, cracking if any, and will be distributed as thin hair cracks which are less noticeable or harmful.<br/>2. Will result in reduction of stresses due to differential expansion of masonry units.

1 alone is correct

2 alone is correct

Neither 1 nor 2 is correct

Both 1 and 2 are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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?

Providing a deeper foundation

Providing buttresses at certain intervals

Using a richer mortar

Using stronger bricks

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

6 %

5 %

4 %

7 %

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements regarding provision of chases in masonry,<br/>(i) No chase should be permitted in a half brick load-bearing wall,<br/>(ii) Vertical chases should not be closer than 2 m in any stretch of a wall,<br/>(iii) Chases should be provided near to bearings of beams and lintels.

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

(i) and (iii) are correct

(ii) and (iii) are correct

(i) and (ii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

The bending stress in a wall or column subjected to effective vertical load need not be considered, if the eccentricity ratio is

Less than or equal to 1/6

More than 1/24

Less than or equal to 1/24

Less than or equal to 1/12

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

1

Between 0 and 1

Greater than 1

TRUE ANSWER : ?
YOUR ANSWER : ?

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

5

3

10

7.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than

30 cm

15 cm

10 cm

20 cm

TRUE ANSWER : ?
YOUR ANSWER : ?

For masonry work with solid bricks, consistency of mortar should be

14 to 18 cm

5 to 8 cm

9 to 13 cm

19 to 23 cm

TRUE ANSWER : ?
YOUR ANSWER : ?

The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of

1.4

2

1.2

1.6

TRUE ANSWER : ?
YOUR ANSWER : ?

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