DESIGN OF MASONRY STRUCTURES QUIZ

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

1.6

1.2

1.4

2

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.

(ii) and (iii) are correct

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

(i) and (ii) are correct

(i) and (iii) 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

Using a richer mortar

Providing buttresses at certain intervals

Using stronger bricks

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements: The use of relatively weak mortar 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. 2. Will result in reduction of stresses due to differential expansion of masonry units.

2 alone is correct

1 alone is correct

Neither 1 nor 2 is correct

Both 1 and 2 are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Lateral restraint but not rotational restraint

Both lateral and rotational restraints

Neither lateral nor rotational restraint

Rotational restraint but not lateral restraint

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Vertical tensile splitting

Any of the above

Buckling

Shear

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

(ii) and (iii) are correct

(i) and (ii) are correct

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

(i) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Vi x height of longer opening

Ax height of shorter opening

Vt x height of shorter opening

Vt x height of longer opening

TRUE ANSWER : ?
YOUR ANSWER : ?

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

10

3

5

7.5

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

4 %

6 %

5 %

7 %

TRUE ANSWER : ?
YOUR ANSWER : ?

↑