Design of Masonry Structures
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

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

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Design of Masonry Structures
Assertion A : For identical strength, a composite cement-lime mortar is preferred over cement mortar.Reason R : Composite cement-lime mortar has higher drying shrinkage than cement mortar.Select your answer based on the codes given below. Codes:

A is false but R is true
Both A and R is true but R is not a 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

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Design of Masonry Structures
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:

Both A and R is true but 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
A is false but R is true

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