DESIGN OF MASONRY STRUCTURES QUIZ

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

(ii) and (iii) are correct

(i) and (ii) are correct

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

Only (ii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : For eccentricity ratio exceeding 1/6, effective thickness of masonry will get reduced.<br/>Reason R : For eccentricity ratio exceeding 1/6, there will be tension on one side of the member.<br/>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 not the correct explanation of A

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

A is true but R is false

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

Between 0 and 1

1

Greater than 1

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

Actual thickness of the stronger leaf

Larger of (B) and (C)

Sum of thickness of both leaves

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 but R is not the correct explanation of A

A is true but R is false

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

TRUE ANSWER : ?
YOUR ANSWER : ?

A 200 mm thick brick masonry wall made of modular bricks carries an axial load of 30 kN/m from wall above and an eccentric load of 20 kN/m from RCC floor acting at a distance of 47.5 mm from the centre line of the wall. The resultant eccentricity ratio is

0.105

0.1

0.09

0.095

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements:A high lime content in a composite cement-lime mortar results in1. Slow hardening.2. Quick setting.3. Weaker mortar.

1 and 2 are correct

2 and 3 are correct

1 and 3 are correct

1, 2 and 3 are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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 (iv)

(i) and (ii)

(i) and (iii)

(ii) and (iii)

TRUE ANSWER : ?
YOUR ANSWER : ?

A free standing brick wall 20 cm thick is subjected to a wind pressure of 75 kg/m². The maximum height of wall from stability consideration is

1.28 m

0.96 m

0.64 m

1.5 m

TRUE ANSWER : ?
YOUR ANSWER : ?

Water retentivity for brick masonry should not be less than

70 %

60 %

80 %

50 %

TRUE ANSWER : ?
YOUR ANSWER : ?

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