A. is maximum at neutral axis
B. decreases below the neutral axis and increases above the neutral axis
C. increases below the neutral axis and decreases above the neutral axis
D. remains same
✅ The correct answer is option C.
Design of Concrete Structures MCQs
112. The critical section for finding maximum bending moment for footing under masonry wall is located_______________?
A. at the middle of the wall
B. at the edge of the wall
C. halfway between the middle and edge of the wall
D. at a distance equal to effective depth of footing from the edge of the wall
✅ The correct answer is option C.
113. The recommended value of modular ratio for reinforced brick work is______________?
A. 18
B. 30
C. 40
D. 58
✅ The correct answer is option C.
114. According to IS : 456-1978, the cblumn or the strut is the member whose effective length is greater than________________?
A. the least lateral dimension
B. 2 times the least lateral dimension
C. 3 times the least lateral dimension
D. 4 times the least lateral dimension
✅ The correct answer is option C.
115. The strength of concrete after one year as compared to 28 days strength is about_______________?
A. 10 to 15% more
B. 15 to 20% more
C. 20 to 25% more
D. 25 to 50% more
✅ The correct answer is option C.
116. While designing the pile as a column, the end conditions are nearly_______________?
A. both ends hinged
B. both ends fixed
C. one end fixed and other end hinged
D. one end fixed and other end free
✅ The correct answer is option C.
117. As compared to ordinary portland cement, use of pozzuolanic cement_______________?
A. reduces workability
B. increases bleeding
C. increases shrinkage
D. increases strength
✅ The correct answer is option C.
118. The slab is designed as one way if the ratio of long span to short span is_____________?
A. less than 1
B. between 1 and 1.5
C. between 1.5 and 2
D. greater than 2
✅ The correct answer is option D.
119. Due to circumferential action of the spiral in a spirally reinforced column________________?
A. capacity of column is decreased
B. ductility of column reduces
C. capacity of column is decreased but ductility of column increases
D. both the capacity of column and ductility of column increase
✅ The correct answer is option D.
120. The design yield stress of steel according to IS: 456-1978 is_______________?
A. 0.37 fy
B. 0.57 fy
C. 0.67 fy
D. 0.87 fy
✅ The correct answer is option D.