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

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?

1, 2 and 3

2 and 3

1 and 3

1 and 2

1, 2 and 3

2 and 3

1 and 3

1 and 2

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Design of Masonry Structures
A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is

15

19

20

25

15

19

20

25

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Design of Masonry Structures
Minimum compressive strength in N/mm² for H1 type mortar used for masonry is

7.5

3

10

5

7.5

3

10

5

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Design of Masonry Structures
Consider the following statements: The use of relatively weak mortar 1. Will accommodate movements due to loads and, cracking if any, and will be distributed as thin hair cracks which are less noticeable or harmful. 2. Will result in reduction of stresses due to differential expansion of masonry units.

Both 1 and 2 are correct

2 alone is correct

1 alone is correct

Neither 1 nor 2 is correct

Both 1 and 2 are correct

2 alone is correct

1 alone is correct

Neither 1 nor 2 is correct

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Design of Masonry Structures
If ‘H’ is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be

0.75 H

1.5 H

0.85 H

1.0 H

0.75 H

1.5 H

0.85 H

1.0 H

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Design of Masonry Structures
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

0.64 m

0.96 m

1.5 m

1.28 m

0.64 m

0.96 m

1.5 m

1.28 m

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Design of Masonry Structures

Design of Masonry Structures A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is

Design of Masonry Structures Minimum compressive strength in N/mm² for H1 type mortar used for masonry is

Design of Masonry Structures If ‘H’ is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be

Design of Masonry Structures 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

Design of Masonry Structures
A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is

Design of Masonry Structures
Minimum compressive strength in N/mm² for H1 type mortar used for masonry is

Design of Masonry Structures
If ‘H’ is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be

Design of Masonry Structures
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