1. 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.
Of these statements

2. If 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

3. The mode of failure of a very short masonry member having h/t ratio of less than 4 is by

4. If the horizontal cross-sectional area of a wall is 1200 cm², then the basic stress shall be multiplied by a reduction factor equal to

5. Where a structural component or a system is providing lateral support to five or more walls or columns, the lateral load to be resisted may be taken as _________ of the total vertical load on the most heavily loaded wall or column in the group

6. 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?

7. Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be

8. 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:

9. Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have

10. Consider the following statements: A high lime content in a composite cement-lime mortar results in 1. Slow hardening. 2. Quick setting. 3. Weaker mortar.
Of these statements

11. The bending stress in a wall or column subjected to effective vertical load need not be considered, if the eccentricity ratio is

12. Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than

13. 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:

14. In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as

15. A free standing brick wall 20 cm thick is subjected to a wind pressure of 75kg/m². The maximum height of wall from stability consideration is

16. Water retentivity for brick masonry should not be less than

17. Consider the following statements regarding provision of chases in masonry, (i) No chase should be permitted in a half brick load-bearing wall, (ii) Vertical chases should not be closer than 2 m in any stretch of a wall, (iii) Chases should be provided near to bearings of beams and lintels. Of these statements

18. In the case of panel wall subjected to horizontal loads at right angles to the plane of the wall, with the mortar not leaner than Ml type, tensile stress in bending in the vertical direction may be allowed to the extent of

19. Minimum compressive strength in N/mm² for H1 type mortar used for masonry is

20. For designing masonry components of a structure, seismic forces provision in the design calculation is not necessary for buildings constructed in

21. 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:

22. 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:

23. The effective height of free standing non-load bearing wall and column respectively will be
Where H is the height of wall or column between centers of supports

24. For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than

25. 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?