DESIGN OF MASONRY STRUCTURES QUIZ

Consider the following statements regarding bands to be provided for strengthening masonry work in masonry buildings constructed in zone III, IV and V. (i) Lintel band is provided at lintel level on partition walls, (ii) Gable band is provided at top of gable masonry below the purlins, (iii) The bands shall be to full width of the wall and not less than 7.5 cm in depth, (iv) The bands shall be made of reinforced concrete only.of these statements, the correct statements are

(ii) and (iii)

(ii) and (iv)

(i) and (iii)

(i) and (ii)

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:

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 and R is not the correct explanation of A

TRUE ANSWER : ?
YOUR ANSWER : ?

The thickness of each leaf of a cavity wall shall not be less than

10 cm

5 cm

7.5 cm

15 cm

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

(ii) and (iii) are correct

(i) and (iii) are correct

(i) and (ii) are correct

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Cement mortars richer than 1 : 3 are not used in masonry because(i) There is no gain in strength of masonry(ii) There is high shrinkage(iii) They are prone to segregation

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

(ii) and (iii) are correct

Only (ii) is correct

(i) and (ii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have

None of above

Both (A) and (B)

High shrinkage

Less strength

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), (ii) and (iii) are correct

(i) and (iii) are correct

(i) and (ii) are correct

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 true but R is false

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

A is false but R is true

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

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

100 cm

75 cm

50 cm

60 cm

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 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 : ?