A. 10 m
B. 20 m
C. 30 m
D. 40 m
✅ The correct answer is option D.
Building Materials and Construction MCQs
142. The maximum total settlement for raft foundation on clayey soils should be limited to______________?
A. 25 mm
B. 25 to 40 mm
C. 40 to 65 mm
D. 65 to 100 mm
✅ The correct answer is option D.
143. The lintels are preferred to arches because______________?
A. arches require more headroom to span the openings like doors, windows etc.
B. arches require strong abutments to withstand arch thrust
C. arches are difficult in construction
D. all of the above
✅ The correct answer is option D.
144. In any good staircase, the maximum and minimum pitch respectively should be_____________?
A. 90° and 0°
B. 75° and 30°
C. 60° and 10°
D. 40° and 25°
✅ The correct answer is option D.
145. Excess of alumina in brick earth makes the brick______________?
A. impermeable
B. brittle and weak
C. to lose cohesion
D. to crack and warp on drying
✅ The correct answer is option D.
146. Glazing is used to make earthenware______________?
A. hard
B. soft
C. porous
D. impervious
✅ The correct answer is option D.
147. The lower edge of the pitched roof, from where the rain water of the roof surface drops down, is known as______________?
A. hip
B. gable
C. ridge
D. eaves
✅ The correct answer is option D.
148. The pressure acting on the stones in stone masonry construction should be_____________?
A. along the direction of bedding planes
B. at 45° to the direction of bedding planes
C. at 60° to the direction of bedding planes
D. perpendicular to the direction of bedding planes
✅ The correct answer is option D.