Which of the following R.C. retaining walls is suitable for heights beyond 6m ?

A. L-shaped wall
B. T-shaped wall
C. Counterfort type
D. All of the above

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 load carrying capacity of a helically reinforced column as compared to that of a tied column is about________________?

A. 5% less
B. 10% less
C. 5% more
D. 10% more

For the design of retaining walls, the minimum factor of safety against overturning is taken as_____________?

A. 1.5
B. 2.0
C. 2.5
D. 3.0

The minimum diameter of longitudinal bars in a column is________________?

A. 6 mm
B. 8 mm
C. 12 mm
D. 16 mm

The diameter of ties in a column should be_______________?

A. More than or equal to one fourth of diameter of main bar
B. More than or equal to 5 mm
C. More than 5 mm but less than one-fourth of diameter of main bar
D. More than 5 mm and also more than one-fourth of diameter of main bar

Maximum percentage reinforcement in case of slabs is limited to___________________?

A. 2
B. 4
C. 6
D. 8

The minimum cover to the ties or spirals should not be less than________________?

A. 15 mm
B. 20 mm
C. 25 mm
D. 50mm

The limits of percentage p of the longitudinal reinforce-ment in a column is given by_____________?

A. 0.15% to 2%
B. 0.8% to 4%
C. 0.8% to 6%
D. 0.8% to 8%

The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone_________________?

A. Compressive stress
B. Shear stress
C. Bond stress
D. Tensile stress