For under water concreting. at least 10 percent more cement is required as compa

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Question
For under water concreting.
Options
A. at least 10 percent more cement is required as compared to dry conditions
B. the volume of coarse aggregates shall not be less than one and half times and not more than twice that of fine aggregate
C. the slump should not be less than 100 mm and not more than 180 mm
D. dewatering by pumping is not done or until 24 hours thereafter
E. All the above

Correct Answer

All the above

Structural Design Specifications problems

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3. The actual length of a column provided with a cap and base, is the distance between
Options
A. top of the base and underside of the cap
B. bottom of the base and underside of the cap
C. top of the base and top of the cap
D. bottom of the base and top of the cap.

4. The thickness of the rectangular plate for the cap or base of a solid round steel columns, is calculated from the formula where d is
Options
A. the reduced diameter of the column
B. the dimension of the base
C. the diameter of the base
D. the diameter of the top.

6. Four reinforcing bars of 30 mm diameter each, are bundled in contact. The lower two bars extend up to end supports. The distance between the points of termination of the upper bars, is kept
Options
A. zero
B. 1.2 m
C. 0.9 m
D. 0.75 m

7. In the formula
Options
A. A and B are the dimensions of the column
B. A and B are the dimensions of the base plate
C. A is the greater projection of the plate beyond the column
D. B is the lesser projection of the plate beyond the column
E. Both (c) and (d) of above.

8. The staggered pitch is the distance between two consecutive rivets measured
Options
A. parallel to the direction of stress in the member
B. perpendicular to the direction of stress in the member
C. diagonally
D. none of these.

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