- A. Providing buttresses at certain intervals
- B. Providing a deeper foundation
- C. Using a richer mortar
- D. Using stronger bricks
Design of Masonry Structures
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For strengthening a 50 m long and 5 m high straight compound wall built in brick work, which one of the following would be most suitable?
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If the eccentricity ratio is more than 1/24, then increase in the permissible stress in the design of wall subjected to eccentric loading as per code is_____.
- A. 10 %
- B. 25 %
- C. 33? %
- D. 50 %
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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_____.
- A. 0
- B. Between 0 and 1
- C. 1
- D. Greater than 1
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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_____.
- A. 0.64 m
- B. 0.96 m
- C. 1.28 m
- D. 1.5 m
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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. Both A and R is true and R is the correct explanation of A
- B. Both A and R is 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
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For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than_____.
- A. 50 cm
- B. 60 cm
- C. 75 cm
- D. 100 cm
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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. Both A and R is true and R is the correct explanation of A
- B. Both A and R is true but R is not a correct explanation of A
- C. A is true but R is false
- D. A is false but R is true
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Minimum compressive strength in N/mm² for H1 type mortar used for masonry is_____.
- A. 3
- B. 5
- C. 7.5
- D. 10
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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
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Assertion A : For eccentricity ratio exceeding 1/6, effective thickness of masonry will get reduced.Reason R : For eccentricity ratio exceeding 1/6, there will be tension on one side of the member.Select your answer according to the codes give below:
- A. Both A and R is true and R is the correct explanation of A
- B. Both A and R is true and R is not the correct explanation of A
- C. A is true but R is false
- D. A is false but R is true