The neutral axis of a T-beam exists within the flange at the bottom edge of the

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all the above.

RCC Structures Design problems

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1. 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.

2. 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.

3. 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

5. Pick up the correct statement from the following:
Options
A. Lateral reinforcement in R.C.C. columns is provided to prevent the longitudinal reinforcement from buckling
B. Lateral reinforcement prevents the shearing of concrete on diagonal plane
C. Lateral reinforcement stops breaking away of concrete cover, due to buckling
D. Lateral reinforcement in R.C.C. columns, is kept not less than 5 mm diameter
E. All the above.

6. 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

7. 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.

10. 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.

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