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:

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

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

2 and 3
1, 2 and 3
1 and 3
1 and 2

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Design of Masonry Structures
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

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

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