The load stress of a section can be reduced by decreasing the lever arm increasi

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Question
The load stress of a section can be reduced by
Options
A. decreasing the lever arm
B. increasing the total perimeter of bars
C. replacing larger bars by greater number of small bars
D. replacing smaller bars by greater number of greater bars
E. none of these.

Correct Answer

replacing larger bars by greater number of small bars

RCC Structures Design problems

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1. Minimum spacing between horizontal parallel reinforcement of the same size should not be less than
Options
A. one diameter
B. 2.5 diameters
C. 3 diameters
D. 3.5 diameters
E. 4 diameters

3. The minimum thickness of a flat slab is taken
Options
A. 13 cm
B. L/32 for end panels without drops
C. L/36 for end panels without drops
D. L/36 for interior panels without drop
E. all the above.

4. According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is
Options
A. half of the width of the slab
B. two-third of the width of the slab
C. three-fourth of the width of the slab
D. four-fifth of the width of the slab
E. three-fifth of the width of the slab.

5. Lapped splices in tensile reinforcement are generally not used for bars of size larger than
Options
A. 18 mm diameter
B. 24 mm diameter
C. 30 mm diameter
D. 36 mm diameter
E. 32 mm diameter

8. Spacing of stirrups in a rectangular beam, is
Options
A. kept constant throughout the length
B. decreased towards the centre of the beam
C. increased at the ends
D. increased at the centre of the beam.

9. If M_d and M_t are the maximum bending moments due to dead load and live load respectively and F is the total effective pressure, for a balanced design of a prestreseed concrete beam of steel, is
Options
A.
B.
C.
D.

10. In a prestressed member it is advisable to use
Options
A. low strength concrete only
B. high strength concrete only
C. low strength concrete but high tensile steel
D. high strength concrete and high tensile steel
E. high strength concrete but low tensile steel

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