Practice Test: Question Set - 03
1. Full restraint is provided by
- (i) Foundation footing of a wall
- (ii) Timber floor spanning on the wall and anchored to the wall
- (iii) RCC slab with a minimum bearing of 10 cm on the wall
Of these statements
- (A) (i) and (iii) are correct
- (B) (i) and (ii) are correct
- (C) (ii) and (iii) are correct
- (D) (i), (ii) and (iii) are correct
2. Consider the following statements:
A high lime content in a composite cement-lime
mortar results in
- Slow hardening.
- Quick setting.
- Weaker mortar.
Of these statements
- (A) 2 and 3 are correct
- (B) 1 and 2 are correct
- (C) 1 and 3 are correct
- (D) 1, 2 and 3 are correct
3. The effective height of free standing non-load bearing wall and column respectively will be
- (A) 1.0H and 1.0H
- (B) 1.5H and 1.5H
- (C) 2.0H and 1.5H
- (D) 2.0H and 2.0H
Where H is the height of wall or column
between centers of supports
4. 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
5. 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:
- (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
6. A 200 mm thick brick masonry wall made of modular bricks carries an axial load of 30 kN/m from wall above and an eccentric load of 20 kN/m from RCC floor acting at a distance of 47.5 mm from the centre line of the wall. The resultant eccentricity ratio is
- (A) 0.090
- (B) 0.095
- (C) 0.100
- (D) 0.105
7. The thickness of each leaf of a cavity wall shall not be less than
- (A) 5 cm
- (B) 7.5 cm
- (C) 10 cm
- (D) 15 cm
8. Minimum compressive strength in N/mm² for H1 type mortar used for masonry is
- (A) 3
- (B) 5
- (C) 7.5
- (D) 10
9. Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be
- (A) More
- (B) Less
- (C) The same in both the cases
- (D) 100 %
10. 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
11. Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than
- (A) 10 cm
- (B) 15 cm
- (C) 20 cm
- (D) 30 cm
12. Cement mortars richer than 1 : 3 are not used in masonry because
- (i) There is no gain in strength of masonry
- (ii) There is high shrinkage
- (iii) They are prone to segregation
Of these statements
- (A) Only (ii) is correct
- (B) (i) and (ii) are correct
- (C) (ii) and (iii) are correct
- (D) (i), (ii) and (iii) are correct
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