Design of Masonry Structures
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
Sum of thickness of both leaves
Larger of (B) and (C)

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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.Select your answer according to the codes given below:

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
A is true but R is false
A is false but R is true

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Design of Masonry Structures
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:

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
A is false but R is true
A is true but R is false

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