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Civil Engineering Objective Questions { RCC Structure Design }



29.  Lapped splices in tensile reinforcement are generally not used for bars of size larger than
A. 18 mm diameter
B. 24 mm diameter
C. 30 mm diameter
D. 36 mm diameter

30.  Steel bars are generally connected together to get greater length than the standard length by providing
A. strainght bar splice
B. hooked splice
C. dowel splice
D. all the above.

31.  The length of lap in tension reinforcement should not be less than the bar diameter actual tension if it is more than x four times the permissible average bond stress
A. 18 bar diameters
B. 24 bar diameters
C. 30 bar diameters
D. 36 bar diameters.

32. Minimum spacing between horizontal parallel reinforcement of the same size should not be less than
A. one diameter
B. 2 5 diameters
C. 3 diameters
D. 3.5 diameters

33. Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than
A. one diameter of thinner bar
B. one diameter of thicker bar
C. sum of the diameters of thinner and thicker bars
D. twice the diameter of thinner bar

34.  The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of
A. 10 mm
B. 15 mm
C. 20 mm
D. 25 mm

35. The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon
A. breadth of the rib
B. overall thickness of the rib
C. centre to centre distance between T-beams
D. all the above.

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