Design of Masonry Structures

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

1. High shrinkage
2. Less strength
3. Both (A) and (B)
4. None of above

View answer

32. The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of

1. 1.2
2. 1.4
3. 1.6
4. 2

View answer

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

1. Less than or equal to 1/24
2. Less than or equal to 1/6
3. More than 1/24
4. Less than or equal to 1/12

View answer

34. The effective height of free standing non-load bearing wall and column respectively will be

1. 1.0H and 1.0H
2. 1.5H and 1.5H
3. 2.0H and 1.5H
4. 2.0H and 2.0H

View answer

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

1. Shear
2. Vertical tensile splitting
3. Buckling
4. Any of the above

View answer

36. The thickness of each leaf of a cavity wall shall not be less than

1. 5 cm
2. 7.5 cm
3. 10 cm
4. 15 cm

View answer

37. The timber floor not spanning on the masonry wall but properly anchored to the wall gives

1. Lateral restraint but not rotational restraint
2. Rotational restraint but not lateral restraint
3. Both lateral and rotational restraints
4. Neither lateral nor rotational restraint

View answer

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

1. 50 %
2. 60 %
3. 70 %
4. 80 %

View answer

39. 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

1. 4 %
2. 5 %
3. 6 %
4. 7 %

View answer