DESIGN OF MASONRY STRUCTURES QUIZ

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) and (ii) are correct

(i) and (iii) are correct

(ii) and (iii) are correct

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

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

33? %

25 %

50 %

10 %

TRUE ANSWER : ?
YOUR ANSWER : ?

Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be

Less

More

The same in both the cases

100 %

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements:<br/>1. Masonry in rich cement mortar though having good strength with high shrinkage is much liable for surface cracks.<br/>2. Lime mortar possesses poor workability and poor water retentivity and also suffers high shrinkage.<br/>3. Masonry in lime mortar has better resistance against rain penetration and is less liable to crack when compared to masonry in cement mortar.<br/>Which of these statements are correct?

1 and 3

1 and 2

2 and 3

1, 2 and 3

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Limiting value of slenderness ratio for a column is less than that of a wall.Reason R : A column can buckle around either of the two horizontal axes while a wall can buckle around only one axis.Select your answer according to the codes given below:

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : From consideration of structural soundness and economy of design, most codes control the maximum slenderness ratio of masonry walls and columns.Reason R : By controlling the maximum slenderness ratio, failure is by excessive stress and not by buckling.Select your answer according to codes given below:

A is false but R is true

A is true but R is false

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

In the case of panel wall subjected to horizontal loads at right angles to the plane of the wall, with the mortar not leaner than Ml type, tensile stress in bending in the vertical direction may be allowed to the extent of

0.4 kg/cm²

1.0 kg/cm²

0.7 kg/cm²

1.2 kg/cm²

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Rotational restraint but not lateral restraint

Both lateral and rotational restraints

Neither lateral nor rotational restraint

Lateral restraint but not rotational restraint

TRUE ANSWER : ?
YOUR ANSWER : ?

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.

Neither 1 nor 2 is correct

1 alone is correct

2 alone is correct

Both 1 and 2 are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than

75 cm

60 cm

100 cm

50 cm

TRUE ANSWER : ?
YOUR ANSWER : ?

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