A. 50 cm
B. 60 cm
C. 75 cm
D. 100 cm
✅ The correct answer is option B.
Design of Masonry Structures MCQs
2. 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?
A. providing buttresses at certain intervals
B. providing a deeper foundation
C. using a richer mortar
D. using stronger bricks
✅ The correct answer is option A.
3. 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%
✅ The correct answer is option B.
4. 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
✅ The correct answer is option A.
5. 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 _______________?
A. 0.4 kg/cm2
B. 0.7 kg/cm2
C. 1.0 kg/cm2
D. 1.2 kg/cm2
✅ The correct answer is option C.
6. 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________________?
A. 0.75 H
B. 0.85 H
C. 1.0 H
D. 1.5 H
✅ The correct answer is option A.
7. 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________________?
A. 0 6
B. 0.75
C. 0.85
D. 0.95
✅ The correct answer is option C.
8. 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___________________?
A. 0.64 m
B. 0.96 m
C. 1.28 m
D. 1.5 m
✅ The correct answer is option A.
9. 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. B. C. D. ?
A.090
B.095
C.100
D.105
✅ The correct answer is option C.
10. 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
✅ The correct answer is option A.