Design of Masonry Structures

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?

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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. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.

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

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

A. Vt x height of shorter opening
B. Vt x height of longer opening
C. Ax height of shorter opening
D. Vi x height of longer opening

Consider the following statements regarding bands to be provided for strengthening masonry work in masonry buildings constructed in zone III, IV and V?

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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.
the correct statements are?
A. (i) and (ii)
B. (i) and (iii)
C. (ii) and (iv)
D. (ii) and (iii)

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 A. B. C. D. ?

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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 A. B. C. D. ?

A.090
B.095
C.100
D.105

Cement mortars richer than 1 : 3 are not used in masonry because_________________?

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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
select the correct statements?
A. Only (ii) is correct
B. (i) and (ii) are correct
C. (ii) and (iii) are correct
D. (i), (ii) and (iii) are correct

Consider the following statements regarding provision of chases in masonry_________________?

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Consider the following statements regarding provision of chases in masonry_________________?

(i) No chase should be permitted in a half brick load-bearing wall,
(ii) Vertical chases should not be closer than 2 m in any stretch of a wall,
(iii) Chases should be provided near to bearings of beams and lintels.
Select the the statements ?
A. (i) and (ii) are correct
B. (i) and (iii) are correct
C. (ii) and (iii) are correct
D. (i), (ii) and (iii) are correct