Category: Design of Concrete Structures

A. 25%
B. 40%
C. 60%
D. 80%

A. segregation
B. compaction
C. shrinkage
D. bulking

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

A. increasing the depth of beam
B. using thinner bars but more in number
C. using thicker bars but less in number
D. providing vertical stirrups

A. time of transit
B. ‘vater-cement ratio
C. the air in the mix
D. size of aggregate

A. 24 to 48 hours
B. 3 days
C. 7 days
D. 14 days

A. increases with increase in diameter of bar
B. decreases with increase in diameter of bar
C. does not depend on diameter of bar
D. none of the above

A. compressive everywhere
B. tensile everywhere
C. partly compressive and partly tensile
D. zero

A. Minimum cross sectional area of longitudinal reinforcement in a column is 0.8%
B. Spacing of longitudinal bars measured along the periphery of column should not exceed 300 mm
C. Reinforcing bars in a column should not be less than 12 mm in diameter
D. The number of longitudinal bars provided in a circular column should not be less than four

A. remains constant
B. increases with richer mixes
C. decreases with richer mixes
D. none of the above